To Recover Unsaturate Patents (Class 585/809)
  • Patent number: 11319264
    Abstract: The invention relates to a method (100) for the recovery of a separation product which contains predominantly hydrocarbons with two carbon atoms, with the use of a separation feedstock which contains predominantly methane, hydrogen and hydrocarbons with two carbon atoms, wherein the methane content of the separation feedstock is up to 20%, and the separation feedstock is provided in a gaseous state.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: May 3, 2022
    Assignee: LINDE AKTIENGESELLSCHAFT
    Inventors: Tuat Pham Duc, Anne Spindelndreher, Benedikt Kurz
  • Patent number: 11285427
    Abstract: The invention includes methods for removing higher acetylenes from a gaseous stream that includes a hydrogen fraction and a non-hydrogen fraction, wherein the gaseous stream includes less than about 4% in total of diacetylene and vinylacetylene, where the method includes the following steps: (i) an adsorption that passes the gaseous stream at a preselected superficial linear gas velocity across an adsorption bed supported within an enclosure, the adsorption bed containing a crystalline porous ceramic adsorbent to adsorb the higher acetylenes onto the adsorbent, thereby producing a saturated adsorption bed and a purified gaseous stream including less than about 25 ppm of diacetylene that regenerates the saturated adsorbent bed by passing a regeneration gas across the saturated adsorption bed to desorb the higher acetylenes retained thereupon, thereby producing a regenerated adsorbent bed and a contaminated gas stream bearing the higher acetylenes; and (iii) a purging step that removes the contaminated gas stre
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: March 29, 2022
    Assignee: Transform Materials LLC
    Inventors: Alexander Olson Santana, James Nathan Ashcraft, David S. Soane
  • Patent number: 10889535
    Abstract: The present invention provides an ethylene separation process comprising an first and second deethanizer columns and an acetylene converter, thereby providing an ethylene stream having a purity of 99 wt % or more to the middle of an ethylene separation column. The present invention increases the production amount of ethylene and also reduces energy consumption by passing the feed through a preliminary ethylene separation process, without having to change existing facilities in which an acetylene converter is provided downstream of the deethanizer column.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: January 12, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Tae Woo Kim, Sung Kyu Lee, Joon Ho Shin, Yeonuk Choo
  • Patent number: 10646792
    Abstract: A process is presented for removing the fouling problems associated with the product recovery in a methanol to olefins conversion process. The process includes passing the quenched MTO process stream to a product separator, wherein an intermediate stream is generated and includes water and heavier hydrocarbons. The intermediate stream is processed to remove the buildup of heavier hydrocarbons.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: May 12, 2020
    Inventors: Christopher Schindlbeck, John J. Senetar, Joseph A. Montalbano
  • Patent number: 10597593
    Abstract: A process for the hydrotreatment of a fuel gas stream containing up to 15% olefins comprises the steps of introducing the fuel gas stream into at least one co-current reactor, where the stream is split into two flow fractions, of which one fraction is routed through an olefin treatment section, while the other fraction is routed through another section, subjecting the sections to heat exchange, combining the two flows, thereby equalizing temperatures and compositions, cooling the combined flow over a heat exchanger and reacting the combined flow to equilibrium in an adiabatic hydrotreatment reactor. A second co-current reactor with intercooling arranged in series after the first cocurrent reactor and before the final adiabatic reactor is used if the fuel gas stream contains more than 8% olefins.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: March 24, 2020
    Assignee: Haldor Topsoe A/S
    Inventors: Jens Michael Poulsen, Lene Boas, Max Thorhauge
  • Patent number: 10407367
    Abstract: A separation apparatus 10 includes a pretreatment section 20 that subjects a target fluid containing an olefin compound to at least one or more of a treatment for reducing an acetylene-based compound, a treatment for reducing a sulfur compound, and a treatment for reducing a fine particle component. In the pretreatment section 20, one or more treatments selected from a hydrotreating and an adsorption treatment with an adsorbent may be performed as the treatment for reducing the acetylene-based compound, one or more treatments selected from a washing and absorption treatment, an adsorption treatment with an adsorbent, and a hydrodesulfurization treatment may be performed as the treatment for reducing the sulfur compound, and one or more treatments selected from a liquid absorption treatment, a collection treatment, or a filtration treatment with a filter may be performed as the treatment for reducing the fine particle component.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: September 10, 2019
    Assignee: NGK Insulators, Ltd.
    Inventor: Kenichi Noda
  • Patent number: 10343960
    Abstract: A separation apparatus 10 includes a pretreatment section 20 that subjects a target fluid containing an olefin compound to at least one or more of a treatment for reducing an acetylene-based compound, a treatment for reducing a sulfur compound, and a treatment for reducing a fine particle component. In the pretreatment section 20, one or more treatments selected from a hydrotreating and an adsorption treatment with an adsorbent may be performed as the treatment for reducing the acetylene-based compound, one or more treatments selected from a washing and absorption treatment, an adsorption treatment with an adsorbent, and a hydrodesulfurization treatment may be performed as the treatment for reducing the sulfur compound, and one or more treatments selected from a liquid absorption treatment, a collection treatment, or a filtration treatment with a filter may be performed as the treatment for reducing the fine particle component.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: July 9, 2019
    Assignee: NGK Insulators, Ltd.
    Inventor: Kenichi Noda
  • Patent number: 10093596
    Abstract: The present invention is, in a first embodiment, a process for removing oxygenated contaminants from an ethylene stream comprising: a) providing a dried ethylene stream (A) comprising essentially ethylene, up to 1 w % oxygenates, ethane, CO, CO2, H2, CH4 and C3+ hydrocarbons, b) sending said stream (A) to a stripper (also referred to as a demethanizer) to produce an overhead stream comprising essentially CO, H2 and CH4, a bottom stream comprising essentially ethylene, oxygenates, ethane, CO2 and C3+ hydrocarbons, c) sending said bottom stream of step b) to a deethanizer to produce a bottom stream comprising essentially ethane, oxygenates and C3+ hydrocarbons, an overhead stream consisting essentially of ethylene and CO2, d) sending said overhead of step c) to a fixed bed CO2 adsorption zone to recover an ethylene stream essentially free of CO2. In another embodiment the CO2 adsorption zone can be located at the inlet of the deethanizer. In another embodiment the demethanizer is replaced by two demethanizers.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: October 9, 2018
    Assignees: Total Research & Technology Feluy, IFP Energies Nouvelles
    Inventors: Babua Das, Manuela Arratia, Catherine Boutrot
  • Patent number: 9963409
    Abstract: The present invention is, in a first embodiment, a process for removing oxygenated contaminants from an ethylene stream comprising: a) providing a dried ethylene stream (A) comprising essentially ethylene, up to 1 w % oxygenates, ethane, CO, CO2, H2, CH4 and C3+ hydrocarbons, b) sending said stream (A) to a stripper (also referred to as a demethanizer) to produce an overhead stream comprising essentially CO, H2 and CH4, a bottom stream comprising essentially ethylene, oxygenates, ethane, CO2 and C3+ hydrocarbons, c) sending said bottom stream of step b) to a deethanizer to produce a bottom stream comprising essentially ethane, oxygenates and C3+ hydrocarbons, an overhead stream consisting essentially of ethylene and CO2, d) sending said overhead of step c) to a fixed bed CO2 adsorption zone to recover an ethylene stream essentially free of CO2. In another embodiment the CO2 adsorption zone can be located at the inlet of the deethanizer. In another embodiment the demethanizer is replaced by two demethanizers.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: May 8, 2018
    Assignees: IFP Energies Nouvelles, Total Research & Technology Feluy
    Inventors: Babua Das, Manuela Arratia, Catherine Boutrot
  • Patent number: 9783470
    Abstract: A process and an apparatus are disclosed for a compact processing assembly to remove C5 and heavier hydrocarbon components from a hydrocarbon gas stream. The hydrocarbon gas stream is expanded to lower pressure and supplied to the processing assembly between an absorbing means and a mass transfer means. A distillation vapor stream is collected from the upper region of the absorbing means and cooled in a first heat and mass transfer means inside the processing assembly to partially condense it, forming a residual vapor stream and a condensed stream. The condensed stream is supplied to the absorbing means at its top feed point. A distillation liquid stream is collected from the lower region of the mass transfer means and directed into a second heat and mass transfer means inside the processing assembly to heat it and strip out its volatile components.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: October 10, 2017
    Assignees: Ortloff Engineers, Ltd., S.M.E. Products, LP
    Inventors: Scott A. Miller, John D. Wilkinson, Joe T. Lynch, Hank M. Hudson, Kyle T. Cuellar, Andrew F. Johnke, W. Larry Lewis
  • Patent number: 9718746
    Abstract: The present invention is a process for removing oxygenated contaminants from an ethylene stream comprising: a) providing a dried ethylene stream (A) comprising essentially ethylene, up to 1 w % oxygenates, ethane, CO, CO2, H2, CH4 and C3+ hydrocarbons, b) sending said stream (A) to a C2 splitter/deethanizer to produce a bottom stream comprising essentially ethane, oxygenates and C3+ hydrocarbons, an overhead comprising the remaining components, c) sending said overhead to a fixed bed CO2 adsorption zone to recover a stream essentially free of CO2, d) sending said stream essentially free of CO2 to a demethanizer/CO stripper to recover an overhead comprising H2, CH4 and CO, liquid ethylene at the bottoms. In another embodiment the CO2 removal step can be made on the recovered ethylene.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: August 1, 2017
    Assignees: Total Research & Technology Feluy, IFP Energies Nouvelles
    Inventors: Manuela Arratia, Catherine Boutrot
  • Patent number: 9701598
    Abstract: The present invention is, in a first embodiment, a process for removing oxygenated contaminants from an ethylene stream comprising: a) providing a dried ethylene stream (A) comprising essentially ethylene, up to 1 w % oxygenates, ethane, CO, CO2, H2, CH4 and C3+ hydrocarbons, b) sending said stream (A) to a stripper (also referred to as a demethanizer) to produce an overhead stream comprising essentially CO, H2 and CH4, a bottom stream comprising essentially ethylene, oxygenates, ethane, CO2 and C3+ hydrocarbons, c) sending said bottom stream of step b) to a deethanizer to produce a bottom stream comprising essentially ethane, oxygenates and C3+ hydrocarbons, an overhead stream consisting essentially of ethylene and CO2, d) sending said overhead of step c) to a fixed bed CO2 adsorption zone to recover an ethylene stream essentially free of CO2. In another embodiment the CO2 adsorption zone can be located at the inlet of the deethanizer.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: July 11, 2017
    Assignee: Total Research & Technology Feluy
    Inventors: Manuela Arratia, Catherine Boutrot
  • Patent number: 9670114
    Abstract: Embodiments of apparatuses and methods for reforming of hydrocarbons including recovery of products are provided. In one example, a method comprises separating a reforming-zone effluent to form a net gas phase stream and a liquid phase hydrocarbon stream. The net gas phase stream is compressed, partially condensed and cooled to form a partially condensed, compressed net gas phase stream. The partially condensed, compressed net gas phase stream is separated to form an intermediate gas phase stream. The intermediate gas phase stream is cooled to form a cooled intermediate gas phase stream. The liquid phase hydrocarbon stream is cooled to form a cooled liquid phase hydrocarbon stream. The cooled intermediate gas phase stream is contacted with the cooled liquid phase hydrocarbon stream to form an H2-rich stream and a cooled second intermediate liquid phase hydrocarbon stream that is enriched with C3/C4 hydrocarbons.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: June 6, 2017
    Assignee: UOP LLC
    Inventors: Robert Edison Tsai, Xin X Zhu, Tokhanh Ngo, William Yanez, Bryan K. Glover
  • Patent number: 9663423
    Abstract: Embodiments of apparatuses and methods for reforming of hydrocarbons including recovery of products are provided. In one example, a method comprises separating a reforming-zone effluent to form a net gas phase stream and a liquid phase hydrocarbon stream. The net gas phase stream is compressed, partially condensed and cooled, and separated to form an intermediate gas phase stream. The intermediate gas phase stream is cooled to form a cooled intermediate gas phase stream. The liquid phase hydrocarbon stream is cooled to form a cooled liquid phase hydrocarbon stream. The cooled intermediate gas phase stream is contacted with the cooled liquid phase hydrocarbon stream to form an H2-rich stream and a cooled second intermediate liquid phase hydrocarbon stream that is enriched with C3/C4 hydrocarbons. The H2-rich stream is contacted with an adsorbent to form an H2-ultra rich stream.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: May 30, 2017
    Assignee: UOP LLC
    Inventors: Bryan K. Glover, Robert Edison Tsai, Xin X. Zhu, William Yanez
  • Patent number: 9573915
    Abstract: There are provided an ionic liquid having ether group(s) in which a copper(I) compound is included, a method for preparing the same, and a method for removing traces amounts of acetylene-based hydrocarbon compounds included in olefin by absorption or extraction using the same. When the disclosed solution is used, oxidation of Cu(I) to Cu(II) is prevented since CuX is stabilized by the ionic liquid. Thus, selective removal efficiency of acetylenic compounds is improved greatly while the removal performance is retained for a long period of time. Further, since the solution according to the present disclosure is applicable as an extractant as well as an absorbent, the associated operation is simple and apparatus cost can be decreased.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: February 21, 2017
    Assignee: Kolon Industries, Inc.
    Inventors: Hyun Joo Lee, Byoung Sung Ahn, Hoon Sik Kim, Jin-Hyung Kim, Gyeong Taek Gong
  • Patent number: 9505684
    Abstract: A process and a plant for producing an olefin stream from a hydrocarbon mixture feed stream, wherein the olefin stream is depleted as regards its content of oxygen-containing organic compounds (oxygenates) as compared to the feed stream. The hydrocarbon mixture feed stream is charged to a separation column operated by a thermal separation process, for example to a distillation column, wherein a material stream enriched in oxygenates is withdrawn via a side outlet and removed from the process. The process according to the invention is particularly useful for processing the product streams obtained in the olefin synthesis by an OTO process.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: November 29, 2016
    Assignee: AIR LIQUIDE GLOBAL E&C SOLUTIONS GERMANY GMBH
    Inventors: Hermann Bach, Thomas Renner, Martin Rothaemel, Michael Wilken
  • Patent number: 9284430
    Abstract: A process for component separation in a polymer production system, comprising separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane and unreacted ethylene, distilling the gas stream into a light hydrocarbon stream, wherein the light hydrocarbon stream comprises ethane and unreacted ethylene, contacting the light hydrocarbon stream with an absorption solvent system, wherein at least a portion of the unreacted ethylene from the light hydrocarbon stream is absorbed by the absorption solvent system, and recovering a waste gas stream from the absorption solvent system, wherein the waste gas stream comprises ethane, hydrogen, or combinations thereof.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: March 15, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Scott E. Kufeld, John D. Hottovy, Ai-fu Chang
  • Patent number: 9243194
    Abstract: The invention relates to a process for hydroconversion of heavy carbon-containing feedstocks that comprises a stage (1) for hydroconversion of the feedstock in at least one reactor that contains a boiling-bed catalyst and then a stage (2) for hydroconversion of at least a portion of the effluent that is obtained in at least one reactor that contains a slurry catalyst.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: January 26, 2016
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Frederic Morel, Patrick Sarrazin, Alain Quignard, Jan Verstraete
  • Patent number: 9238193
    Abstract: Disclosed are systems and methods which provide a process stream comprising a gaseous component, capture the gaseous component from the process stream by an ionic liquid solvent of a separator, and recover a captured gaseous component from the ionic liquid solvent in a regenerator. A second gaseous component from the process stream may be captured by the ionic liquid solvent of the separator, and the second gaseous component may be recovered from the ionic liquid solvent in the regenerator. Alternatively, the second gaseous component from the process stream may be uncaptured by the ionic liquid solvent, and the uncaptured second gaseous component may be recovered from a membrane unit.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: January 19, 2016
    Assignees: CHEVRON PHILLIPS CHEMICAL COMPANY LP, CHEVRON U.S.A. INC.
    Inventors: Lei Ji, Ai-Fu Chang, Michael S. Driver, Hye-Kyung Timken
  • Patent number: 9205380
    Abstract: Disclosed herein is a methanol-to-propylene (MTP) conversion process that utilizes a membrane separation step to increase the recycle of C2 hydrocarbons back to the MTP reactor, thereby increasing propylene product yield and reducing raw material loss.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: December 8, 2015
    Assignee: Membrane Technology and Research, Inc.
    Inventor: Paul Su
  • Publication number: 20150025292
    Abstract: The invention describes a method for separating hydrocarbons in an installation for generating hydrocarbons from a hydrocarbon-containing charge by cleavage. The product gas of the cleavage, which contains gaseous hydrocarbons, is compressed, dried, and supplied as charge material into a separation stage (a front end C3/C4 separation). The front end C3/C4 separation comprises a C4 absorber and a depropanizer. A hydrocarbon fraction consisting of hydrocarbons having a maximum of 3 carbon atoms is obtained as a gaseous overhead product of the C4 absorber. A liquid hydrocarbon fraction consisting of hydrocarbons having at least 4 carbon atoms is obtained as a bottom product of the depropanizer. The front end C3/C4 separation comprises an additional process technological C2/C4 separation stage is arranged between the C4 absorber and the depropanizer.
    Type: Application
    Filed: August 2, 2012
    Publication date: January 22, 2015
    Applicant: LINDE AKTIENGESELLSCHAFT
    Inventor: Naree Schmigalle
  • Patent number: 8937206
    Abstract: The process converts FCC olefins to heavier compounds. The heavier compounds are more easily separated from the unconverted paraffins. The heavier compounds can be recycled to an FCC unit or delivered to a separate FCC unit. Suitable conversion zones are oligomerization and aromatic alkylation zones.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: January 20, 2015
    Assignee: UOP LLC
    Inventors: Joao Jorge da Silva Ferreira Alves, James E. Rekoske, Christopher P. Nicholas
  • Publication number: 20140350319
    Abstract: The present invention is a process for removing oxygenated contaminants and water from an hydrocarbon stream comprising: introducing the contaminated hydrocarbon stream in a gaseous phase in an absorption zone, contacting said hydrocarbon stream in said absorption zone at a pressure of at least 5 bars, advantageously in the range 5 to 40 bars with an alcohol capable to absorb water and oxygenated contaminants at conditions effective to produce an overhead hydrocarbon stream having a reduced oxygenated contaminants and water content and an absorbent bottoms stream comprising the alcohol, hydrocarbons and having an enhanced oxygenated contaminants and water content, sending the overhead of the absorption zone to a wash column (referred to as the high pressure water wash column) at a pressure of at least 5 bars, advantageously in the range 5 to 40 bars, essentially washed with water at conditions effective to produce an overhead hydrocarbon stream having a reduced oxygenated contaminants and an aqueous bot
    Type: Application
    Filed: July 22, 2014
    Publication date: November 27, 2014
    Inventors: Laurent Avaullee, Jean-Pierre Thoret Bauchet
  • Publication number: 20140336434
    Abstract: The present invention relates to a method for removal of an organic amine from a liquid hydrocarbon stream containing the amine, comprising: a) adding water to the hydrocarbon stream containing the amine, b) bubbling carbon dioxide through the hydrocarbon stream containing the amine, and c) separating a solid phase formed containing the amine from a liquid phase.
    Type: Application
    Filed: October 2, 2012
    Publication date: November 13, 2014
    Inventors: Syed M. Azhar Hashmi, Mohammed H. Al-Hazmi, Abdullah Naffisa
  • Publication number: 20140323778
    Abstract: A catalytic adsorbent, comprising at least cobalt and molybdenum deposited on a porous substrate in which the content of cobalt, expressed in terms of CoO oxide, is between 11 and 30% by weight relative to the total weight of said adsorbent and the content of molybdenum, expressed in terms of MoO3 oxide, is between 3 and 30% by weight relative to the total weight of said adsorbent, is described. This invention also relates to a process for hydrotreatment using said catalytic adsorbent.
    Type: Application
    Filed: April 23, 2014
    Publication date: October 30, 2014
    Applicant: IFP ENERGIES NOUVELLES
    Inventors: Philibert LEFLAIVE, Marie Claire MARION, Antoine DAUDIN
  • Publication number: 20140323791
    Abstract: The present invention is a process for removing oxygenated contaminants from an ethylene stream comprising: a) providing a dried ethylene stream (A) comprising essentially ethylene, up to 1 w % oxygenates, ethane, CO, CO2, H2, CH4 and C3+ hydrocarbons, b) sending said stream (A) to a C2 splitter/deethanizer to produce a bottom stream comprising essentially ethane, oxygenates and C3+ hydrocarbons, an overhead comprising the remaining components, c) sending said overhead to a fixed bed CO2 adsorption zone to recover a stream essentially free of CO2, d) sending said stream essentially free of CO2 to a demethanizer/CO stripper to recover an overhead comprising H2, CH4 and CO, liquid ethylene at the bottoms. In another embodiment the CO2 removal step can be made on the recovered ethylene.
    Type: Application
    Filed: July 13, 2012
    Publication date: October 30, 2014
    Inventors: Babua Das, Manuela Arratia, Catherine Boutrot
  • Publication number: 20140303422
    Abstract: The present invention is, in a first embodiment, a process for removing oxygenated contaminants from an ethylene stream comprising: a) providing a dried ethylene stream (A) comprising essentially ethylene, up to 1 w % oxygenates, ethane, CO, CO2, H2, CH4 and C3+ hydrocarbons, b) sending said stream (A) to a stripper (also referred to as a demethanizer) to produce an overhead stream comprising essentially CO, H2 and CH4, a bottom stream comprising essentially ethylene, oxygenates, ethane, CO2 and C3+ hydrocarbons, c) sending said bottom stream of step b) to a deethanizer to produce a bottom stream comprising essentially ethane, oxygenates and C3+ hydrocarbons, an overhead stream consisting essentially of ethylene and CO2, d) sending said overhead of step c) to a fixed bed CO2 adsorption zone to recover an ethylene stream essentially free of CO2. In another embodiment the CO2 adsorption zone can be located at the inlet of the deethanizer.
    Type: Application
    Filed: July 13, 2012
    Publication date: October 9, 2014
    Inventors: Babua Das, Manuela Arratia, Catherine Boutrot
  • Patent number: 8853485
    Abstract: The present invention provides a method for preparing the polymer grade low-carbon olefin through separation of the methanol pyrolysis gas, including steps of the compression, impurity removal, and absorption and separation. In the absorption and separation step, the pyrolysis gas is sent to the front-end ethylene removing column, and then is, with the C4 absorbent, further absorbed and separated to produce polymer grade ethylene products, polymer grade propylene products, and C4 and C5 products. The moderate-temperature and moderate-pressure separation without a cold box according to the present invention provides safer production process, less investment in the equipment, as well as easier separation and lower energy consumption as a result of the front-end ethylene removing and C4 absorption and separation process.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: October 7, 2014
    Assignees: China MTO Limited, Daqing Petrochemical Engineering Co., Ltd.
    Inventors: Huiling Zhang, Longwu Cheng, Zhiyuan Song, Xiaojian Min
  • Patent number: 8846997
    Abstract: The present invention is a process for removing oxygenated contaminants and water from an hydrocarbon stream comprising: introducing the contaminated hydrocarbon stream in a gaseous phase in an absorption zone, contacting said hydrocarbon stream in said absorption zone at a pressure of at least 5 bars, advantageously in the range 5 to 40 bars with an alcohol capable to absorb water and oxygenated contaminants at conditions effective to produce an overhead hydrocarbon stream having a reduced oxygenated contaminants and water content and an absorbent bottoms stream comprising the alcohol, hydrocarbons and having an enhanced oxygenated contaminants and water content, sending the overhead of the absorption zone to a wash column (referred to as the high pressure water wash column) at a pressure of at least 5 bars, advantageously in the range 5 to 40 bars, essentially washed with water at conditions effective to produce an overhead hydrocarbon stream having a reduced oxygenated contaminants and an aqueous bott
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: September 30, 2014
    Assignee: Total Research & Technology Feluy
    Inventors: Laurent Avaullee, Jean-Pierre Thoret Bauchet
  • Patent number: 8816147
    Abstract: A process for recovering 1-hexene comprising: a) separating the mixture obtained from the ethylene trimerization reaction into a top fraction comprising ethylene and a bottom fraction, b) separating a portion of the bottom fraction obtained from step a) into a top fraction comprising 1-hexene and 1-butene and a bottom fraction, c) separating a portion of the fraction comprising 1-hexene and 1-butene obtained from step b) into a top fraction principally comprising 1-butene and into a bottom fraction principally comprising 1-hexene, and in said process: a portion of the bottom fraction obtained from step b) is returned to the reaction section and another portion of said bottom fraction obtained from step b) is used in a recirculation loop connecting the reaction section and the column of said step b), said recirculation loop being used to cool the reaction section and to reboil said column of step b).
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: August 26, 2014
    Assignee: Axens
    Inventors: Daniel-Jean Vinel, Jean-Alain Chodorge, Jerome Pigourier, Pierre-Yves Martin, Laurent Bournay
  • Publication number: 20140235915
    Abstract: Organic sulfur compounds contained in refinery off gas streams having either high ort low concentrations of olefins are converted to hydrogen sulfides which can be then be removed using conventional amine treating systems. The process uses a catalytic reactor with or without a hydrotreater depending on the olefin concentration of the off gas stream. The catalytic reactor operates in a hydrogenation mode or an oxidation mode to convert a majority of organic sulfur compounds into hydrogen sulfides.
    Type: Application
    Filed: April 24, 2014
    Publication date: August 21, 2014
    Inventors: Minish Mahendra Shah, Raymond Francis Drnevich, Vasilis Papavassiliou
  • Patent number: 8809611
    Abstract: A method for removal and recovery of an organic amine from a hydrocarbon stream containing the amine, including: i) mixing the hydrocarbon stream containing the amine with an aqueous inorganic acid in a volumetric ratio of hydrocarbon stream:aqueous inorganic acid of greater than 1:1-5:1, preferably 1.5:1-4:1, more preferably 3:1, ii) phase separating of hydrocarbon and aqueous phase; iii) removing the hydrocarbon phase and optionally further purifying thereof, iv) optionally recycling at least a part of the hydrocarbon phase obtained in step (iii) into mixing step (i), v) mixing the aqueous phase obtained in step (iii) with an aqueous alkaline solution, vi) phase separating of an aqueous phase and an organic phase formed, vii) removing the organic phase obtained in step (vi) and optionally further purifying thereof.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: August 19, 2014
    Assignee: Saudi Basic Industries Corporation
    Inventors: Fuad M. Mosa, Shahid Majeed Azam, Sultan Eid Al-Otaibi
  • Patent number: 8785711
    Abstract: There are provided an ionic liquid having ether group(s) in which a copper(I) compound is included, a method for preparing the same, and a method for removing traces amounts of acetylene-based hydrocarbon compounds included in olefin by absorption or extraction using the same. When the disclosed solution is used, oxidation of Cu(I) to Cu(II) is prevented since CuX is stabilized by the ionic liquid. Thus, selective removal efficiency of acetylenic compounds is improved greatly while the removal performance is retained for a long period of time. Further, since the solution according to the present disclosure is applicable as an extractant as well as an absorbent, the associated operation is simple and apparatus cost can be decreased.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: July 22, 2014
    Assignee: Kolon Industries, Inc.
    Inventors: Hyun Joo Lee, Byoung Sung Ahn, Hoon Sik Kim, Jin-Hyung Kim, Gyeong Taek Gong
  • Patent number: 8766029
    Abstract: Mixtures of hydrocarbons predominantly having 4 carbon atoms per molecule known as C4 cuts are used in obtaining crude 1,3-butadiene by a thermal cracking process. Vaporous purified crude C4 cuts are produced from liquid crude C4 cuts, containing butanes, butenes, 1,3-butadiene, C3 hydrocarbons, C4 oligomers and polymers, and C5+ hydrocarbons via an extractive distillation by fist removing the C4 oligomers and polymers and the C5+ hydrocarbons and then vaporizing the liquid crude C4 cut in a vaporizer vessel. The vaporizer vessel is directly or indirectly in contact with a stripping column where liquid C4 cuts are supplied to the upper region, direct gas and liquid exchange with the vaporizer vessel occurs in the lower region, and vaporous purified crude C4 cuts are removed from the top region.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: July 1, 2014
    Assignee: BASF SE
    Inventors: Bernd Heida, Randolf Hugo
  • Patent number: 8766028
    Abstract: The invention disclosed relates to a process for refining a hydrocarbon feed to make substantially styrene-free C6-C8 aromatic hydrocarbons (BTX). The hydrocarbon feed, for example, unhydrotreated pyrolysis gasoline, is distilled to make a BTX rich stream containing styrene which is fractionated to separate C6 and C7 hydrocarbons from C8 hydrocarbons including styrene. Styrene in the C8 hydrocarbons reacts in the presence of a selective etherification catalyst with a C1-C3 lower alkyl alcohol to form the corresponding styrene ether, which is then separated by distillation into a styrene ether stream and a C8 hydrocarbons rich stream. The C8 hydrocarbons rich stream is then re-mixed with the C6 and C7 hydrocarbons, and sent to hydrogenation reactors to remove sulphur and olefinic hydrocarbons to form substantially styrene-free BTX.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: July 1, 2014
    Assignees: AMT International Inc., CPC Corporation
    Inventors: Kuang-Yeu Wu, Adam T. Lee, Karl Tze-Tang Chuang, Hung-Chung Shen, Tzong-Bin Lin
  • Publication number: 20140135558
    Abstract: Olefins may be recovered from a methanol to olefins reactor effluent by initially feeding the effluent to an absorber demethanizer to contact the effluent with an absorbent to recover an overheads including methane and ethylene and a bottoms including the absorbent, ethylene, and ethane. The bottoms are separated to recover an ethylene fraction and an ethane fraction. The overheads are cooled and partially condensed in a first heat exchanger to a temperature of ?40° C. or greater. The resulting stream, or a portion thereof, may be further cooled and condensed via indirect heat exchange with a mixed refrigerant to a temperature of less than ?40° C. The non-condensed vapors are separated from the condensed liquids to form a liquid fraction and a methane fraction. The liquid fraction is fed to the absorber demethanizer as reflux, and the methane and ethane fractions combined to form the mixed refrigerant.
    Type: Application
    Filed: November 1, 2013
    Publication date: May 15, 2014
    Applicant: Lummus Technology Inc.
    Inventors: Peter Daniel Kuzma, JR., Stephen De Haan, Daniel Lee Baumbach
  • Patent number: 8722954
    Abstract: The present invention is a method of reducing the formation of fouling deposits occurring in a caustic scrubber used to remove acid gases comprising: a) providing a caustic scrubber fed with an alkaline aqueous solution comprising essentially one or more of NaOH, KOH or LiOH, b) providing an olefin-containing hydrocarbon stream, contaminated with oxygenated compounds and acid gases, and said oxygenated compounds are capable to make polymeric fouling deposits in the presence of the alkaline solution of the scrubber, c) sending the above hydrocarbon stream to the caustic scrubber to recover an olefin-containing hydrocarbon stream essentially free of acid gases, wherein, d) an efficient amount of a solvent capable to reduce the formation of fouling deposits is introduced in the caustic scrubber and/or in the alkaline solution fed to the scrubber, e) the liquid outlet of the scrubber is sent to means to separate the solvent from the alkaline solution, and wherein the caustic scrubber has several stages with vario
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: May 13, 2014
    Assignee: Total Research & Technology Feluy
    Inventor: Jean-Pierre Thoret Bauchet
  • Patent number: 8704021
    Abstract: The process converts FCC olefins to heavier compounds. The heavier compounds are more easily separated from the unconverted paraffins. The heavier compounds can be recycled to an FCC unit or delivered to a separate FCC unit. Suitable conversion zones are oligomerization and aromatic alkylation zones.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: April 22, 2014
    Assignee: UOP LLC
    Inventors: Joao Jorge da Silva Ferreira Alves, James E. Rekoske, Christopher P. Nicholas
  • Patent number: 8686212
    Abstract: Process for removing water from an ethylene stream containing water, by introducing an ethylene stream containing water into, and circulating the ethylene stream through, a separation vessel. A liquid diethyl ether stream is introduced into, and circulated through, the separation vessel so that the liquid diethyl ether stream and the ethylene stream containing water are brought into contact, and an ethylene stream having a reduced water content is recovered from the separation vessel.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: April 1, 2014
    Assignee: BP P.L.C.
    Inventors: Leslie William Bolton, Benjamin Patrick Gracey, Michael Keith Lee
  • Patent number: 8669407
    Abstract: Described is an apparatus for, and a method of, recovering linear butenes from a mixed feed comprising providing a first mixed feed comprising linear butenes and isobutene; contacting the first mixed feed with an oligomerization catalyst such as an MWW family zeolite in a first oligomerization reactor to produce a second mixed feed comprising the linear butenes, C8 olefins and higher oligomers, and a reduced amount of isobutene relative to the first mixed feed; and separating the second mixed feed to produce a first effluent of first purified linear butenes, and a second effluent of C8 olefins and higher oligomers. The oligomerization reactor may be a converted isobutene-to-methyl-t-butylether reactor.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: March 11, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Katherine Sullivan Phillion, Garland B. Brignac, Michael C. Clark, Glenn J. Moloney, Donald J. Norris, Benjamin S. Umansky
  • Publication number: 20140051819
    Abstract: The present invention is directed to a method for preparing isobutene from a renewable source and their use in the preparation of renewable polymers. The invention also discloses purification of isobutene, selective removal of 1-butene, cis-2-butene and trans-2-butene using microporous adsorbent material, and the oligomerization of the purified liquid isobutene yielding diisobutenes and triisobutenes.
    Type: Application
    Filed: September 30, 2011
    Publication date: February 20, 2014
    Applicants: LANXESS INC., LANXESS DEUTSCHLAND GMBH
    Inventors: Gregory J.E. Davidson, Gilles Arsenault, Thomas Foellinger, Ralf-Ingo Schenkel, Kevin Kulbara, Jessica Lee Watson
  • Patent number: 8642828
    Abstract: Secondary streams in 1,3-butadiene processing plants still contain high amounts of valuable 1,3-butadiene. An energy-efficient process for purifying a recycle stream from a 1,3-butadiene processing plant is provided. The recycle stream is divided into two substreams: the first substream for prepurifying pure 1,3-butadiene feedstream by removing high boilers relative to 1,3-butadiene in a stripping column and the second substream in an extractive distillation plant.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: February 4, 2014
    Assignee: BASF SE
    Inventors: Bernd Heida, Randolf Hugo
  • Publication number: 20140012059
    Abstract: A process for recovering 1-hexene comprising: a) separating the mixture obtained from the ethylene trimerization reaction into a top fraction comprising ethylene and a bottom fraction, b) separating a portion of the bottom fraction obtained from step a) into a top fraction comprising 1-hexene and 1-butene and a bottom fraction, c) separating a portion of the fraction comprising 1-hexene and 1-butene obtained from step b) into a top fraction principally comprising 1-butene and into a bottom fraction principally comprising 1-hexene, and in said process: a portion of the bottom fraction obtained from step b) is returned to the reaction section and another portion of said bottom fraction obtained from step b) is used in a recirculation loop connecting the reaction section and the column of said step b), said recirculation loop being used to cool the reaction section and to reboil said column of step b).
    Type: Application
    Filed: July 1, 2013
    Publication date: January 9, 2014
    Inventors: Daniel-Jean VINEL, Jean-Alain CHODORGE, Jerome PIGOURIER, Pierre-Yves MARTIN, Laurent BOURNAY
  • Patent number: 8618344
    Abstract: A process is disclosed for enhanced recovery of propylene and LPG from the fuel gas produced in Fluid catalytic cracking unit by contacting a heavier hydrocarbon feed with FCC catalyst. In the conventional process, the product mixture from FCC main column overhead comprising naphtha, LPG and fuel gas, are first condensed and gravity separated to produce unstabilized naphtha, which is subsequently used in the absorber to absorb propylene and LPG from fuel gas. However, the recovery of propylene beyond 97 wt % is difficult in this process since unstabilized naphtha already contains propylene of 5 mol % or above. In the present invention, C4 and lighter components from unstabilized naphtha are first stripped off in a separate column to obtain a liquid fraction almost free from propylene (<0.1 mol %) and other LPG components. Such a stripped liquid fraction, after cooling to 20° C. to 30° C.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: December 31, 2013
    Assignee: Reliance Industries Limited
    Inventors: Manoj Yadav, Sukumar Mandal, Asit Kumar Das, Yogesh Gupta, Minaz Makhania, Gobind Tulsi, Shailendra Arora, Shubhangi Jaguste
  • Patent number: 8598402
    Abstract: The present invention describes a n-butane absorption process for purifying the ethylene product from an ethane oxidation process. The ethane oxidation product is fed to a series of absorption towers using a n-butane solvent that remove the inert components as well as purifying the ethylene from the product. A first absorption tower uses n-butane as a solvent to absorb both the ethane and ethylene, allowing for inert gasses to be removed from the stream. An ethylene-rich side stream from this tower is sent to an ethylene purification tower where ethylene is purified using n-butane solvent. The bottom stream from the first absorption tower is then sent to an intermediate ethylene recovery tower where crude ethylene is purified, and the overhead ethylene stream being sent to the ethylene purification tower.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: December 3, 2013
    Assignee: Celanese International Corporation
    Inventors: C. V. McSwain, George C. Seaman
  • Patent number: 8563793
    Abstract: Processes utilizing the integration of (i) processes and the associated equipment used to purify and recover propylene from propane- and/or C4+-containing refinery hydrocarbon streams, with (ii) catalytic dehydrogenation are disclosed. This integration allows for elimination of some or all of the conventional fractionation section of the dehydrogenation process, normally used to purify propylene from unconverted propane in the reactor effluent. Significant capital and utility savings are therefore attained.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: October 22, 2013
    Assignee: UOP LLC
    Inventors: Joseph E. Zimmermann, Larry C. Erickson, Gregory J. Nedohin
  • Publication number: 20130267752
    Abstract: The present invention relates to a method for purification of a hydrocarbon stream containing linear alpha olefins, isomers thereof and at least one organic amine, the linear alpha olefins, isomers and the amine having boiling points under atmospheric pressure which differ by at most 5° C., comprising the step of removing a major amount of the organic amine from the hydrocarbon stream by distillation, wherein the distillation is carried out to that, together with the amine, between 5% and 95 wt % of the isomers, based on the total amount of the isomers in the hydrocarbon stream, are removed from the hydrocarbon stream in an amine/isomer-rich fraction.
    Type: Application
    Filed: September 27, 2011
    Publication date: October 10, 2013
    Applicants: LINDE AG, SAUDI BASIC INDUSTRIES CORPORATION
    Inventors: Wolfgang Müller, Marco Harff, Anton Wellenhofer, Anina Wöhl, Heinz Bölt, Andreas Meiswinkel
  • Patent number: 8552245
    Abstract: This method includes the separation of an upstream partly condensed cracked gas stream in an intermediate separator (44B) in order to recover an intermediate liquid (136), and an intermediate cracked gas stream (138) and the introduction of the intermediate liquid (140) into an intermediate demethanization column (68). The method comprises the sampling of a portion of the intermediate liquid (136) and the expansion of at least one first fraction (194) obtained from the sampled portion (190). It comprises the putting of the first expanded fraction in a heat exchange relationship with the intermediate head stream (146) from the column (68) for at least partly condensing the intermediate head stream (146). The method includes the separation of the intermediate partly condensed head stream in a first reflux separator (76) in order to form a liquid stream (148) introduced into the intermediate column (68) and a combustible gas stream (150).
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: October 8, 2013
    Assignee: Technip France
    Inventors: Yvon Simon, Jean-Paul Laugier
  • Publication number: 20130237740
    Abstract: The present invention is a method of reducing the formation of fouling deposits occurring in a caustic scrubber used to remove acid gases comprising: a) providing a caustic scrubber fed with an alkaline aqueous solution comprising essentially one or more of NaOH, KOH or LiOH, b) providing an olefin-containing hydrocarbon stream, contaminated with oxygenated compounds and acid gases, and said oxygenated compounds are capable to make polymeric fouling deposits in the presence of the alkaline solution of the scrubber, c) sending the above hydrocarbon stream to the caustic scrubber to recover an olefin-containing hydrocarbon stream essentially free of acid gases, wherein, d) an efficient amount of a solvent capable to reduce the formation of fouling deposits is introduced in the caustic scrubber and/or in the alkaline solution fed to the scrubber, e) the liquid outlet of the scrubber is sent to means to separate the solvent from the alkaline solution, f) optionally an additive capable to reduce the conversion of
    Type: Application
    Filed: May 3, 2011
    Publication date: September 12, 2013
    Applicant: TOTAL RESEARCH & TECHNOLOGY FELUY
    Inventor: Jean-Pierre Thoret Bauchet
  • Patent number: 8524972
    Abstract: This disclosure relates generally to low temperature steam stripping methods for byproduct polymer and solvent separation from an ethylene oligomerization process. The methods disclosed have been found to separate byproduct polymer from solvent without fouling process equipment or causing other process problems. The byproduct polymer ends up as flowable solid particles in a water stream that may be easily discharged from the process, while solvent is recovered for recycle to the process. In embodiments of the invention, over 90 wt % of the solvent used is recovered and the discharged byproduct polymer is less than 20 wt % solvent.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: September 3, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Michael W. Weber, Randy L. Foster, James R. Lattner, Jimmy L. Tardy, Michael J. Veraa