With Subsequent Treatment Of Product Patents (Class 208/212)
  • Patent number: 7470358
    Abstract: An integrated process for the production of low sulfur diesel. The process utilizes a middle distillate hydrocarbon stream and a heavy distillate hydrocarbon stream. The middle distillate hydrocarbon feedstock is reacted with a hydrogen rich gaseous stream having a first pressure in a hydrodesulfurization reaction zone and the heavy distillate hydrocarbon feedstock is reacted with a hydrogen rich gaseous stream having a second pressure in a hydrocracking zone.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: December 30, 2008
    Assignee: UOP LLC
    Inventor: Tom N. Kalnes
  • Patent number: 7449102
    Abstract: A process for the production of low sulfur diesel and a residual hydrocarbon stream containing a reduced concentration of sulfur. A residual hydrocarbon feedstock and a heavy distillate hydrocarbon feedstock are used in the process.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: November 11, 2008
    Assignee: UOP LLC
    Inventor: Tom N. Kalnes
  • Patent number: 7435334
    Abstract: The invention relates to a process for the production of a gasoline with a low sulfur content starting from an initial gasoline that comprises olefins, thiophene compounds and mercaptans and comprises a stage for treating at least one fraction of the initial gasoline under conditions of alkylation of the thiophene compounds by the olefins, a stage for treating at least one fraction of the effluent that is obtained from the preceding stage under conditions of addition of the olefins to the mercaptans, and a distillation stage for obtaining a light fraction that is low in thiophene compounds and mercaptans, and a heavy fraction that is high in sulfur.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: October 14, 2008
    Assignee: Institut Francais du Petrole
    Inventors: Julia Magne-Drisch, Florent Picard
  • Patent number: 7431828
    Abstract: A two-stage hydrotreating process is disclosed wherein a hydrocarbon stream is first desulphurized followed by a dehydrogenation step, which process comprises in combination contacting the feed and hydrogen over a hydrotreating catalyst at hydrotreating conditions, heating the hydrotreated effluent and hydrogen-rich gas from the hydrotreating reactor and contacting said effluent and hydrogen gas over a hydrotreating catalyst in a post-treatment reactor at a temperature sufficient to increase the polyaromatic hydrocarbon content and lower the hydrogen content of said effluent.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: October 7, 2008
    Assignee: Haldor Topsoe A/S
    Inventors: Michael G. Hunter, Rasmus G. Egeberg, Kim G. Knudsen
  • Patent number: 7431831
    Abstract: A new residuum full hydroconversion slurry reactor system has been developed that allows the catalyst, unconverted oil, products and hydrogen to circulate in a continuous mixture throughout an entire reactor with no confinement of the mixture. The mixture is partially separated in between the reactors to remove only the products and hydrogen while permitting the unconverted oil and the slurry catalyst to continue on into the next sequential reactor. In the next reactor, a portion of the unconverted oil is converted to lower boiling point hydrocarbons, once again creating a mixture of unconverted oil, products, hydrogen and slurry catalyst. Further hydroprocessing may occur in additional reactors, fully converting the oil. The oil may alternately be partially converted, leaving a highly concentrated catalyst in unconverted oil which can be recycled directly to the first reactor. The slurry reactor system is, in this invention, preceded by an in-line pretreating step, such as hydrotreating or deasphalting.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: October 7, 2008
    Assignee: Chevron U.S.A. Inc.
    Inventors: Darush Farshid, Bruce Reynolds
  • Patent number: 7431822
    Abstract: Applicants have developed a new residuum full hydroconversion slurry reactor system that allows the catalyst, unconverted oil, hydrogen, and converted oil to circulate in a continuous mixture throughout an entire reactor with no confinement of the mixture. The mixture is separated internally, within one of more of the reactors, to separate only the converted oil and hydrogen into a vapor product while permitting the unconverted oil and the slurry catalyst to continue on into the next sequential reactor as a liquid product. A portion of the unconverted oil is then converted to lower boiling point hydrocarbons in the next reactor, once again creating a mixture of unconverted oil, hydrogen, converted oil, and slurry catalyst. Further hydroprocessing may occur in additional reactors, fully converting the oil. The oil may alternately be partially converted, leaving a concentrated catalyst in unconverted oil which can be recycled directly to the first reactor.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: October 7, 2008
    Assignee: Chevron U.S.A. Inc.
    Inventors: Darush Farshid, James Murphy, Bruce Reynolds
  • Patent number: 7431827
    Abstract: A process for the production of low sulfur, low olefin gasoline wherein a cracked naphtha, such as a full boiling range cracked naphtha, is first separated by fractional distillation into at least two fractions while simultaneously selectively hydrogenating the polyunsaturated compounds contained therein. The mono olefins in the light fraction are then subjected to etherification with alcohol to produce ethers or hydration with water to produce alcohols. The heavy fraction is subjected to sulfur removal by hydrodesulfurization or chemisorption. The two fractions are then combined to produce a low sulfur, low olefin gasoline.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: October 7, 2008
    Assignee: Catalytic Distillation Technologies
    Inventors: Kerry L. Rock, Yi-Gang Xiong, Arvids Judzis, Jr.
  • Patent number: 7431823
    Abstract: The instant invention is directed to a new residuum full hydroconversion slurry reactor system that allows the catalyst, unconverted oil and converted oil to circulate in a continuous mixture throughout an entire reactor with no confinement of the mixture. The mixture is partially separated in between the reactors to remove only the products and hydrogen, while permitting the unconverted oil and the slurry catalyst to continue on into the next sequential reactor where a portion of the unconverted oil is converted to lower boiling point hydrocarbons, once again creating a mixture of unconverted oil, converted oil, and slurry catalyst. Further hydroprocessing may occur in additional reactors, fully converting the oil. The oil may alternately be partially converted, leaving a highly concentrated catalyst in unconverted oil which can be recycled directly to the first reactor.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: October 7, 2008
    Assignee: Chevron U.S.A. Inc.
    Inventors: Darush Farshid, Bruce Reynolds
  • Patent number: 7423192
    Abstract: A method and system for blending components obtained from a feed stock. The method includes flowing a first stream through a membrane member, with the membrane member having a first wafer assembly comprising a first thin film polymer membrane, a first permeate zone, and heat transfer means for transferring heat from the first permeate zone to the polymer membrane. The method includes exposing the first stream to the polymer membrane and providing a heated fluid to the heat transfer means in order to heat the permeate zone and the polymer membrane as the first stream is being flown through the first wafer assembly. The method further includes removing a permeate stream from the permeate zone. The permeate stream may be conducted to at least one refinery process unit for further processing. In the preferred embodiment, the feed stock is a naphtha.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: September 9, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Craig Y. Sabottke, John G. Matragrano
  • Patent number: 7419582
    Abstract: A hydrocracking process wherein the feedstock is hydrotreated and the liquid and gaseous effluent from the hydrotreater is directly introduced into the upper end of a hydrocracking vessel which provides a liquid seal to prevent the passage of the gaseous stream containing hydrogen sulfide and ammonia from the hydrotreater to enter the hydrocracking zone containing hydrocracking catalyst. Fresh hydrogen is then introduced into the hydrocracking zone. An apparatus for hydrocracking a hydrocarbon feedstock is also disclosed.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: September 2, 2008
    Assignee: UOP LLC
    Inventors: Richard K. Hoehn, Vasant P. Thakkar, Vedula K. Murty, Douglas W. Kocher-Cowan, Jennifer L. Anderson
  • Patent number: 7419586
    Abstract: A process for the selective hydrodesulfurization of olefinic naphtha streams containing a substantial amount of organically-bound sulfur and olefins. The olefinic naphtha stream is selectively desulfurized in a first hydrodesulfurization stage. The effluent stream from this first stage is sent to a separation zone wherein a lower boiling naphtha stream and a higher boiling naphtha stream are produced. The lower boiling naphtha stream is sent through at least two more separation zones, each at a lower temperature than the preceding separation stage. The higher boiling naphtha stream, which contains most of the sulfur moieties, is passed to a second hydrodesulfurization stage wherein at least a fraction of the sulfur moieties are removed.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: September 2, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Edward S. Ellis, John P. Greeley, Vasant Patel, Murali V. Ariyapadi
  • Patent number: 7384541
    Abstract: After passing into reaction section R, the hydrocarbon feedstock C mixed with hydrogen H is expanded in device D. The expansion is brought about by a single-phase turbine until a gas volume ratio of 5% is reached, then expansion is brought about in a two-phase turbine of the rotodynamic type.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: June 10, 2008
    Assignee: Institut Francais du Petrole
    Inventors: Yves Charron, Béatrice Fischer
  • Patent number: 7374667
    Abstract: For the production of gasoline with a low sulfur content, a process comprises at least one stage for transformation of sulfur-containing compounds consisting of an alkylation or adsorption of sulfur-containing compounds and/or an increasing of the weight of light sulfur-containing compounds, at least one stage for treatment in the presence of an acid catalyst and at least one desulfurization treatment of at least a portion of the gasoline. The process can also optionally comprise at least one stage for selective hydrogenation of diolefins and optionally at least one fractionation of the gasoline that is obtained into at least two fractions: light gasoline and heavy gasoline.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: May 20, 2008
    Assignees: BP Corporation North America, Inc., Institute Francais du Petrole
    Inventors: Quentin Debuisschert, Denis Uzio, Jean-Luc Nocca, Florent Picard, David B Arnett, Mike Grayson, Donald E Zeek, Carl Snider
  • Patent number: 7361265
    Abstract: A process for the hydrodesulfurization of cracked olefin streams is described, the process aiming at reducing the sulfur content while at the same time minimizing the hydrogenation degree of said olefins. In order to dilute the added reaction hydrogen, the process makes use of non-reactive compounds such as N2, CH4, C2H6, C3H8, C4H10, Group VIII noble gases as well as admixtures of same in any amount, in gas or vapor phase.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: April 22, 2008
    Assignee: Petroleo Brasileiro S.A.-Petrobras
    Inventors: Rafael M. de Almeida, Jefferson Roberto Gomes
  • Patent number: 7361266
    Abstract: The present invention is related to a method of subjecting a feed oil to a refining process. This method includes a fractional distillation step 1 in which a feed oil is separated into a distillate oil M1 and a bottom oil M2 by a distillation process, a separation step in which the bottom oil is separated into a bottom light oil and a residue, and a hydrorefining step 3 in which the obtained distillate oil M1 and the bottom oil M2 are subjected to hydrorefining in the presence of hydrogen and a catalyst. In the hydrorefining step 3, the bottom light oil (deasphalted oil M3) is passed through a first catalyst layer 12 of a hydrorefining unit providing a plurality of catalyst layers 12, 13, and 13 filled with a hydrorefining catalyst, and a mixed oil comprising the distillate oil M1 and the bottom light oil (deasphalted oil M3) is passed through a downstream catalyst layer 13 and subject to a hydrogenation process.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: April 22, 2008
    Assignee: JGC Corporation
    Inventors: Makoto Inomata, Tsuyoshi Okada, Kozo Imura, Hajime Sasaki
  • Patent number: 7306651
    Abstract: A method of treatment of a gas mixture which contains H2, H2S and possibly of other impurities, such as hydrocarbons. The treatment method is aimed at purifying the hydrogen mixture without incurring a overall pressure loss. The method according to the invention uses a device for pressure swing adsorption where the device includes an integrated compressor. In each adsorber of the device a pressure swing cycle is carried out which includes the steps of: adsorption, decompression, purge, and repressurization.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: December 11, 2007
    Assignee: L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude
    Inventors: Denis Cieutat, Guillaume De Souza, Serge Moreau, Pascal Tromeur
  • Patent number: 7291258
    Abstract: A process for concurrently fractionating and hydrotreating a full range naphtha stream.
    Type: Grant
    Filed: November 12, 2005
    Date of Patent: November 6, 2007
    Assignee: Catalytic Distillation Technologies
    Inventors: Gary G. Podrebarac, Mario J. Maraschino, Montri Vichailak
  • Patent number: 7282137
    Abstract: A process for preparing high VI lubricating oil basestocks comprising hydrotreating, hydrodewaxing and optionally hydrofinishing. The hydrotreating step is under conditions such that the amount of conversion to 343° C. minus is less than 5 wt. % of the feedstock and the VI increase is less than 4 VI over the feedstock. Hydrodewaxing uses a low alpha catalyst and hydrofinishing is accomplished with a catalyst based on the M41S family.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: October 16, 2007
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: Ian A. Cody, William J. Murphy, Sylvain Hantzer, David W. Larkin, John E. Gallagher, Jr., Jeenok T. Kim
  • Patent number: 7276150
    Abstract: The process for desulfurizing a gas oil fraction according to the invention comprises a low-boiling gas oil fraction hydrodesulfurization step (I) wherein a low-boiling gas oil fraction is desulsurized under the condition of a H2/Oil ratio of 70 to 200 Nm3/kl to obtain a treated oil, a high-boiling gas oil fraction hydrodesulfurization step (II) wherein a high-boiling gas oil fraction is desulsurized under the condition of a H2Oil ratio of 200 to 800 Nm3/kl to obtain a treated oil, and a step (III) wherein the treated oil obtained in the step (I) is mixed with the treated oil obtained in the step (II), and in this process, at least a part of a gas containing unreacted hydrogen in the step (II) is used for the hydrodesulfurization of the step (I).
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: October 2, 2007
    Assignee: JGC Corporation
    Inventors: Shigeki Nagamatsu, Jun Abe, Akira Sugimoto, Makoto Inomata, Tetsuya Watanabe
  • Patent number: 7261808
    Abstract: A process to further upgrade a pre-processed used lubricating oil by: (a) contacting the partially upgraded used oil in the presence of hydrogen with a hydrodemetallization catalyst; (b) contacting the effluent of step (a) in the presence of hydrogen with a hydrotreating catalyst; (c) contacting the effluent of step (b) in the presence of hydrogen with a dewaxing catalyst; and (d) contacting the effluent of step (c) in the presence of hydrogen with a hydrotreating catalyst.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: August 28, 2007
    Assignee: Shell Oil Company
    Inventors: Pierre Grandvallet, Anthony Patrick Hagan, Laurent Georges Huve
  • Patent number: 7252756
    Abstract: A process is disclosed for the production of refinery transportation fuel or components for refinery blending of transportation fuels having a reduced amount of sulfur and/or nitrogen-containing impurities. The process involves contacting a hydrocarbon feedstock containing the above impurities with an immiscible phase containing hydrogen peroxide and acetic acid in an oxidation zone to selectively oxidize the impurities. After a gravity phase separation, the hydrocarbon phase containing any remaining oxidized impurities, is passed to an extraction zone wherein aqueous acetic acid is used to extract a portion of any remaining oxidized impurities. A hydrocarbon stream having reduced impurities can then be recovered. The acetic acid phase effluents from the oxidation and the extraction zones can then be passed to a common separation zone for recovery of the acetic acid and for optional recycle back to the oxidation and extraction zones.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: August 7, 2007
    Assignee: BP Corporation North America Inc.
    Inventors: William H. Gong, Larry W. Kruse, George A. Huff, Michael Muskett
  • Patent number: 7250107
    Abstract: For producing basic oils and in particular very high quality oils, i.e. oils possessing a high viscosity index (VI), a low aromatics content, good UV stability and a low pour point, from oil cuts having an initial boiling point higher than 340° C., possibly with simultaneous production of middle distillates (in particular gasoils and kerosene) of very high quality, i.e. having a low aromatics content and a low pour point, the invention provides a flexible procedure for producing oils and middle distillates from a charge containing heteroatoms, i.e. containing more than 200 ppm by weight of nitrogen, and more than 500 ppm by weight of sulphur. The procedure comprises at least one hydrorefining stage, at least one stage of catalytic dewaxing on zeolite, and at least one hydrofinishing stage.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: July 31, 2007
    Assignee: Institut Francais du Petrole
    Inventors: Eric Benazzi, Christophe Gueret, Pierre Marion, Alain Billon
  • Patent number: 7247235
    Abstract: A process for the hydrogenation of a hydrocarbon feed includes contacting a major amount of the hydrocarbon feed with hydrogen in a counter-current manner in a first reaction zone under hydrogenation reaction conditions in the presence of a hydrogenation catalyst in at least a first catalyst bed wherein a liquid effluent exits at a bottom end of the first reaction zone and a hydrogen-containing gaseous effluent exits at a top end of the first reaction zone, and contacting a minor portion of the hydrocarbon feed with said hydrogen-containing gaseous effluent in a co-current manner in a second reaction zone having a catalyst bed positioned to receive the hydrogen-containing effluent of the first reaction zone.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: July 24, 2007
    Assignee: ABB Lummus Global Inc,
    Inventors: Harjeet Virdi, Arup Roy, Thu-Huong Nguyen
  • Patent number: 7244352
    Abstract: A process for producing a naphtha having a decreased amount of sulfur by selective hydroprocessing a petroleum feedstream comprising cracked naphtha to reduce its sulfur content with minimum loss of octane. The reduced sulfur naphtha stream contains mercaptan sulfur reversion products that are removed preferably by use of an aqueous base solution containing a catalytically effective amount of a phase transfer catalyst.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: July 17, 2007
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Thomas R. Halbert, Craig A. McKnight, John P. Greeley, Bruce R. Cook, Garland B. Brignac, Mark A. Greaney, Robert C. Welch
  • Patent number: 7232848
    Abstract: An apparatus for converting a gaseous and/or liquid feed fluid to gaseous and/or liquid products using a solid catalyst comprises a reactor, a liquid phase disposed within the reactor volume, a fixed catalyst at least partially disposed in the liquid phase, a cooling system having a cooling element in thermal contact with the liquid phase, a feed inlet positioned to feed the feed fluid into the reactor volume, and a fluid outlet in fluid communication with the liquid phase. The catalyst is contained in a catalyst container and the container may be adjacent to said cooling element, extend through said cooling element, or may surround the catalyst container. The catalyst may be a Fischer-Tropsch catalyst.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: June 19, 2007
    Assignee: ConocoPhillips Company
    Inventors: Sergio R. Mohedas, Rafael L. Espinoza, Jianping Zhang
  • Patent number: 7175754
    Abstract: A process for the production of low benzene content gasoline is disclosed wherein a full boiling range naphtha is fractionated to produce a light naphtha, a medium naphtha and a heavy naphtha. The benzene is contained in the medium naphtha and this stream is subjected to hydrogenation to convert the benzene to cyclohexane which may be isomerized to improve the octane. The valuable olefins are removed in the light naphtha and the valuable heavier aromatics (toluene and xylenes) are removed in the heavy naphtha. In a preferred embodiment all of the reactions are carried out in distillation column reactors.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: February 13, 2007
    Assignee: Catalytic Distillation Technologies
    Inventors: Willibrord A. Groten, Kerry L. Rock
  • Patent number: 7153415
    Abstract: A light cracked naphtha is treated to convert mercaptans to sulfides and saturate dienes and then subjected to destructive hydrodesulfurization (HDS) to convert the organic sulfur compounds to hydrogen sulfide. The recombinant mercaptans formed by reaction of hydrogen sulfide and olefins at the outlet of the HDS are generally heavier than the light cracked naphtha is fractionated in admixture with a heavy cracked naphtha. A low sulfur content light cracked naphtha is produced as an overheads and the major portion of the mercaptans leave with heavy cracked naphtha as bottoms. It also advantageous to pass the heavy cracked naphtha through the HDS in admixture with the light cracked naphtha, since the recombinant mercaptans formed with the heavy cracked naphtha olefins (which displace some of the lower mercaptans which would form the light cracked naphtha olefins) will be even higher boiling and easier to separate by fractionation.
    Type: Grant
    Filed: November 1, 2002
    Date of Patent: December 26, 2006
    Assignee: Catalytic Distillation Technologies
    Inventors: Gary G. Podrebarac, Willibrord A. Groten, Manoj Som, Martinus J. Almering
  • Patent number: 7141640
    Abstract: An upflow reactor for the production of bisphenol A from acetone and phenol includes a vessel, a catalyst bed disposed within the vessel, and a reactant distribution/product collection system disposed within the vessel. The reactant distribution/product collection system includes a perforated distributor disposed at a lower end of the reactor. The reactant distribution/product collection system further includes a perforated collector disposed at an upper end of the reactor. A method for producing bisphenol A from acetone and phenol Includes Introducing the reacting mixture containing acetone and phenol to the distributor, directing it upward through the catalyst bed, and recovering the reacted acetone and phenol as bisphenol A together with other isomers and non reacted species. A method for avoiding catalyst bead carryover from the bed in an upflow reactor Includes receiving a product of the upflow reactor into the collector disposed at an upper end of the reactor through a screen with proper slit size.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: November 28, 2006
    Assignee: General Electric Company
    Inventors: Hatem Belfadhel, Corinne Duchanoy, Jan-Willem Goedmakers, Eduard Hendricus Schlarmann, Monique I. R. de Winne
  • Patent number: 7122114
    Abstract: A process for reducing sulfur compounds in naphtha to produce gasoline of ultra-low sulfur content, i.e., 10–30 ppm of sulfur, from a fluidized catalytic cracking reactor effluent stream, withdraws a high sulfur content sidestream of catalytically produced medium and heavy cat naphtha with an endpoint of +430° F. that is fed to a side column where any thiophenic and benzothophenic compounds are catalytically reacted with hydrogen to convert them to hydrogen sulfide. The desulfurized light and mid-cut naphtha is returned to the main fractionation unit and the heavy catalytic naphtha is withdrawn as a product stream from the bottom of the side column.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: October 17, 2006
    Inventor: Christopher Dean
  • Patent number: 7097760
    Abstract: A catalytic hydrocracking process for the production of ultra low sulfur diesel wherein a hydrocarbonaceous feedstock is hydrocracked at elevated temperature and pressure to obtain conversion to diesel boiling range hydrocarbons. The resulting hydrocracking zone effluent is hydrogen stripped in a stripping zone maintained at essentially the same pressure as the hydrocracking zone to produce a first gaseous hydrocarbonaceous stream and a first liquid hydrocarbonaceous stream. The first gaseous hydrocarbonaceous stream containing diesel boiling range hydrocarbons is introduced into a desulfurization zone and subsequently partially condensed to produce a hydrogen-rich gaseous stream and a second liquid hydrocarbonaceous stream containing diesel boiling range hydrocarbons. The first liquid stream is separated to produce a third liquid hydrocarbonaceous stream containing diesel boiling range hydrocarbons which is also introduced into the desulfurization zone. An ultra low sulfur diesel product stream is recovered.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: August 29, 2006
    Assignee: UOP LLC
    Inventors: Tom N. Kalnes, Vasant P. Thakkar, Richard K. Hoehn
  • Patent number: 7052598
    Abstract: A process for the production of gasoline with a low sulfur content that comprises at least one selective hydrogenation of diolefins, optionally at least one stage for transformation, preferably to increase their weight, for light sulfur-containing compounds that are present in the gasoline, at least one fractionation of the gasoline that is obtained into at least two fractions: light gasoline and heavy gasoline, then optionally a stage for transformation, preferably for alkylation or adsorption, of sulfur-containing compounds and a desulfurization treatment in a stage of at least a portion of the heavy fraction.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: May 30, 2006
    Assignees: Institut Francais du Petrole, BP Corporation North America, Inc.
    Inventors: Quentin Debuisschert, Denis Uzio, Jean-Luc Nocca, Florent Picard
  • Patent number: 7029573
    Abstract: The invention relates to a composition and method for treating liquid hydrocarbons in order to remove acidic impurities, such as mercaptans, particularly mercaptans having a molecular weight of about C4 (C4H10S=90 g/mole) and higher, such as recombinant mercaptans.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: April 18, 2006
    Assignees: ExxonMobil Research and Engineering Company, Merichem Company
    Inventors: Mark A. Greaney, Binh N. Le, Daniel P. Leta, John N. Begasse, Charles T. Huang, Verlin Keith Turner
  • Patent number: 7014751
    Abstract: The invention relates to a method for treating and upgrading a hydrocarbon containing acidic species such as mercaptans, comprising: (a) contacting the hydrocarbon, in the essential absence of oxygen, with a first phase of a treatment composition containing water, dissolved alkali metal hydroxide, cobalt phthalocyanine sulfonate, and dissolved alkylphenylates and having at least two phases, (i) the first phase containing water, alkali metal alkylphenylate, dissolved alkali metal hydroxide, and dissolved sulfonated cobalt phthalocyanine, and (ii) the second phase containing water and dissolved alkali metal hydroxide; and then (b) separating an upgraded hydrocarbon.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: March 21, 2006
    Assignees: Exxonmobil Research and Engineering Co., Merichem Company
    Inventors: Mark A. Greaney, Binh N. Le, Daniel P. Leta, John N. Begasse, Charles T. Huang, Verlin Keith Turner
  • Patent number: 7005058
    Abstract: Disclosed is an apparatus and process for controlling the sulfur content of effluent from a hydrocarbon fractionation column. The effluent includes a low boiling stream, a middle boiling stream and a high boiling stream. Either of the feed or the low boiling stream may be subjected to a mercaptan removal treatment such as thioetherification or mercaptan oxidation treatment. The high boiling stream is subjected to hydrotreatment which will rid the high boiling stream of almost all organic sulfur compounds. The middle boiling stream may be subjected to a sulfur treatment complex which may comprise a sulfur removal unit and/or a catalytic reforming unit which may already be present in the refinery. Control valves govern the flow of adding the middle boiling stream to the low boiling stream and the high boiling stream in response to the sulfur concentration of the overhead stream downstream of the mercaptan removal treatment.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: February 28, 2006
    Assignee: UOP LLC
    Inventor: Gavin P. Towler
  • Patent number: 7001502
    Abstract: A process is provided for treating crude oil to visbreak and/or upgrade such oil using hydrogen gas. The process includes the steps of introducing hydrogen into a heated stream of crude oil or partially upgraded crude oil and mixing such introduced hydrogen with the oil to achieve intimate dispersion of hydrogen to enhance thereby visbreaking and/or upgrading.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: February 21, 2006
    Assignee: Canadian Enviromnental Equipment & Engineering Technologies, Inc.
    Inventors: Robert Satchwell, Jose Lourenco, Patrick J. Cochrane, Roderick M. Facey, Joao Rodrigues, Kenneth Bannard, Hannu Salokangas
  • Patent number: 6984312
    Abstract: A process for the treatment of a light cracked naphtha is disclosed wherein the light cracked naphtha is first subjected to thioetherification and fractionation into two boiling fractions. The lower boiling fraction is removed as overheads for later recombination with the product and the higher boiling fraction is combined with a heavy cracked naphtha and subjected to simultaneous hydrodesulfurization and fractionation to separate the higher boiling fraction from the heavy cracked naphtha which is recycled. The recycled heavy cracked naphtha is eventually desulfurized and hydrogenated to produce a clean solvent which washes the catalyst and extends catalyst life.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: January 10, 2006
    Assignee: Catalytic Distillation Technologies
    Inventors: Manoj Som, Gary G. Podrebarac, Scott W. Shorey
  • Patent number: 6977321
    Abstract: A process for the production of propylene from an olefinic feedstock containing at least one olefin of C4 or greater, the process comprising contacting the olefinic feedstock with a catalyst of the MFI-type having a silicon/aluminum atomic ratio of at least about 180 to produce an effluent containing propylene, the propylene yield on an olefin basis being from 30 to 50k based on the olefinic content of the feedstock.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: December 20, 2005
    Assignee: Fina Research S.A.
    Inventors: Jean-Pierre Dath, Luc Delorme, Jacques-François Grootjans, Xavier Vanhaeren, Walter Vermeiren
  • Patent number: 6960291
    Abstract: The invention relates to a method for desulfurizing naphtha boiling-range hydrocarbons such as cracked naphtha. More particularly, the invention relates to hydrotreating the naphtha under selective hydrotreating conditions, and then removing mercaptans from the hydrotreater effluent using a caustic extractant.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: November 1, 2005
    Assignees: ExxonMobil Research and Engineering Company, Merichem Company
    Inventors: Mark A. Greaney, Binh N. Le, Daniel P. Leta, John N. Begasse, Charles T. Huang, Verlin Keith Turner
  • Patent number: 6881325
    Abstract: Economical processes are disclosed for the production of components for refinery blending of transportation fuels by selective oxidation of feedstocks comprising a mixture of hydrocarbons, sulfur-containing and nitrogen-containing organic compounds. Oxidation feedstock is contacted with a soluble quaternary ammonium salt containing halogen, sulfate, or bisulfate anion, and an immiscible aqueous phase comprising a source of hydrogen peroxide, and at least one member of the group consisting of phosphomolybdic acid and phosphotungstic acid, in a liquid reaction mixture under conditions suitable for reaction of one or more of the sulfur-containing and/or nitrogen-containing organic compounds. Blending components containing less sulfur and/or less nitrogen than the oxidation feedstock are recovered from the reaction mixture. Advantageously, at least a portion of the immiscible acid-containing phase is recycled to the oxidation.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: April 19, 2005
    Assignee: BP Corporation North America Inc.
    Inventors: George Ernest Morris, Andrew Richard Lucy, William H. Gong, Monica Cristina Regalbuto, George A. Huff, Jr.
  • Patent number: 6881324
    Abstract: A process for the treatment of light naphtha hydrocarbon streams is disclosed wherein the mercaptans contained therein are reacted with diolefins simultaneous with fractionation into a light stream and a heavy stream. The heavy stream is then simultaneously treated at high temperatures and low pressures and fractionated. The naphtha is then stripped of the hydrogen sulfide in a final stripper.
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: April 19, 2005
    Assignee: Catalytic Distillation Technologies
    Inventor: Lawrence A. Smith, Jr.
  • Patent number: 6855853
    Abstract: A process for the production of low benzene content gasoline is disclosed wherein a full boiling range naphtha is fractionated to produce a light naphtha, a medium naphtha and a heavy naphtha. The benzene is contained in the medium naphtha and this stream is subjected to hydrogenation to convert the benzene to cyclohexane which may be isomerized to improve the octane. The valuable olefins are removed in the light naphtha and the valuable heavier aromatics (toluene and xylenes) are removed in the heavy naphtha. In a preferred embodiment all of the reactions are carried out in distillation column reactors.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: February 15, 2005
    Assignee: Catalytic Distillation Technologies
    Inventors: Willibrord A. Groten, Kerry L. Rock
  • Patent number: 6843906
    Abstract: An integrated hydrotreating process which produces a high quality feed for the FCC to maintain sulfur in FCC gasoline to a level lower than 30 ppm from a high boiling feedstock and an ultra low sulfur diesel stream preferably less than 10 ppm from a cracked stock diesel boiling material. The high boiling feedstock is firstly hydrotreated to reduce the concentration of heterogeneous compounds which produces lower boiling hydrocarbonaceous compounds boiling in the diesel range. The resulting hydrocarbonaceous compounds boiling in the diesel range together with other cracked material in the diesel boiling range are further hydrotreated in a second hydrotreating zone to meet ultra low sulfur diesel specifications and high cetane index.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: January 18, 2005
    Assignee: UOP LLC
    Inventor: Odette T. Eng
  • Patent number: 6841062
    Abstract: This invention relates to a crude oil desulfurization process which comprises hydrodesulfurizing a crude oil feed in a crude desulfurization unit. The desulfurized crude oil is then separated into a light gas oil fraction, a vacuum gas oil fraction and a vacuum residuum fraction. The vacuum gas oil is hydrocracked to form at least one low sulfur fuel product. The light gas oil fraction is hydrotreated. The vacuum gas oil may be hydrocracked in one or more stages. Hydrocracking in the second stage, if present, will convert of at least 20% of the first zone effluent, to create a low sulfur light gas oil fraction. The light gas oil fraction may then be hydrotreated.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: January 11, 2005
    Assignee: Chevron U.S.A. Inc.
    Inventor: Bruce E. Reynolds
  • Patent number: 6827845
    Abstract: Economical processes are disclosed for the production of components for refinery blending of transportation fuels by selective oxidation of feedstocks comprising a mixture of hydrocarbons, sulfur-containing and nitrogen-containing organic compounds. Oxidation feedstock is contacted with an immiscible phase comprising at least one organic peracid or precursors of organic peracid in a liquid phase reaction mixture maintained substantially free of catalytic active metals and/or active metal-containing compounds and under conditions suitable for oxidation of one or more of the sulfur-containing and/or nitrogen-containing organic compounds. Blending components containing less sulfur and/or less nitrogen than the oxidation feedstock are recovered from the reaction mixture. Advantageously, at least a portion of the immiscible acid-containing phase is recycled to the oxidation.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: December 7, 2004
    Assignee: BP Corporation North America Inc.
    Inventors: William H. Gong, Monica Cristina Regalbuto, George A. Huff, Jr.
  • Patent number: 6824676
    Abstract: A process for concurrently fractionating and treating a full range naphtha stream. The full boiling range naphtha stream is first subjected to simultaneous thioetherification and splitting into a light boiling range naphtha, an intermediate boiling range naphtha and a heavy boiling range naphtha. The intermediate boiling range naphtha containing thiophene and thiophene boiling range mercaptans is passed on to a polishing hydrodesulfurization reactor where a low sulfur, low olefin gas oil is concurrently fed to the polishing reactor to insure that a liquid phase is present.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: November 30, 2004
    Assignee: Catalytic Distillation Technologies
    Inventors: Gary G. Podrebarac, Willibrord A. Groten, Lawrence A. Smith, Jr.
  • Publication number: 20040209771
    Abstract: The present invention pertains to a method for hydroprocessing a heavy hydrocarbon oil, comprising bringing a heavy hydrocarbon oil into contact with hydroprocessing catalyst I in the presence of hydrogen in a first stage, after which the effluent of the first stage is contacted in whole or in part with hydroprocessing catalyst II in the presence of hydrogen in a second stage. The method according to the invention combines efficient contaminant removal with high cracking rate and low sediment formation. The invention also pertains to the combination of catalysts.
    Type: Application
    Filed: May 21, 2004
    Publication date: October 21, 2004
    Inventors: Satoshi Abe, Katsuhisa Fujita
  • Publication number: 20040188327
    Abstract: A process for fractionating and treating of a full range naphtha stream. The full boiling range naphtha stream is first split into a light boiling range naphtha, an intermediate boiling range naphtha and a heavy boiling range naphtha. The bottoms are subjected to hydrodesulfurization and the effluent combined with the intermediate boiling range naphtha containing thiophene and thiophene boiling range mercaptans and subjected to a second hydrodesulfurization. The effluent from the polishing reactor may be combined with the light boiling range naphtha to produce a new full boiling range naphtha containing substantially less total sulfur than the original feed. The mercaptans in the light naphtha may be removed by thioetherification prior to splitting or by wet caustic wash afterwards. The object being to meet higher standards for sulfur removal, by treating the components of the naphtha feed with the process that preserves the olefinic while most expediently removing the sulfur compounds.
    Type: Application
    Filed: December 12, 2001
    Publication date: September 30, 2004
    Applicant: CATALYTIC DISTILLATION TECHNOLOGIES
    Inventor: Willibrord A. Groten
  • Patent number: 6793804
    Abstract: An integrated hydrotreating process which produces a high quality feed for the FCC to maintain sulfur in FCC gasoline to a level lower than 30 ppm from a high boiling feedstock and an ultra low sulfur diesel stream preferably less than 10 ppm from a cracked diesel boiling material. The high boiling feedstock is firstly hydrotreated to reduce the concentration of heterogeneous compounds which produces lower boiling hydrocarbonaceous compounds boiling in the diesel range and the resulting hydrotreated high boiling feedstock is separated in a high pressure stripper. The resulting hydrocarbonaceous compounds boiling in the diesel range together with other cracked and/or straight run material in the diesel boiling range are further hydrotreated in an integrated second hydrotreating zone to meet ultra low sulfur diesel specifications and a high cetane index.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: September 21, 2004
    Assignee: UOP LLC
    Inventors: David A. Lindsay, Gary R. Brierley, Tom N. Kalnes
  • Patent number: 6787026
    Abstract: This invention is directed to a process for hydroprocessing vacuum gas oils and other feeds in order to produce unconverted oil suitable for use as base oil feed for white oils, Group III oils, and BMCI (Bureau of Mines Correlation Index) ethylene plant feed. Ammonia, hydrogen sulfide, and light products are removed from the first stage at high pressure in order to produce a higher quality of unconverted oil that is suitable for Group III base oils.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: September 7, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventor: Darush Farshid
  • Publication number: 20040129606
    Abstract: A process for concurrently fractionating and hydrotreating a full range naphtha stream.
    Type: Application
    Filed: June 18, 2003
    Publication date: July 8, 2004
    Applicant: CATALYTIC DISTILLATION TECHNOLOGIES
    Inventors: Gary G. Podrebarac, Mario J. Maraschino, Montri Vichailak