Solids Transferring Patents (Class 208/164)
  • Patent number: 10399075
    Abstract: A process for combusting coke from catalyst in partial burn mode is disclosed. The partial burn regenerator runs deprived of oxygen such that the flue gas will contain a fair amount of carbon monoxide. The oxygen present in the flue gas can burn in the bed before reaching the dilute phase. The catalyst distributor is positioned in the upper chamber of the regeneration vessel for discharging the catalyst.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: September 3, 2019
    Assignee: UOP LLC
    Inventor: Paolo Palmas
  • Patent number: 10343128
    Abstract: A reaction-regeneration device for catalytic dehydrogenation or/and catalytic cracking of alkanes comprises a reaction device and a regeneration device. The reaction device comprises a reactor and a disengager, and the disengager is located at an upper part of the reactor. The reactor comprises a tapering section, and diameters of cross sections of the tapering section gradually decrease from bottom to top. Secondary conversion of alkenes caused by back-mixing is reduced, and thus the yield and selectivity to alkenes are increased.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: July 9, 2019
    Assignee: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
    Inventors: Chunyi Li, Guowei Wang
  • Patent number: 10307721
    Abstract: A reaction-regeneration device for catalytic dehydrogenation or/and catalytic cracking of alkanes comprises a reaction device and a regeneration device. The reaction device comprises a reactor and a disengager, and the disengager is located at an upper part of the reactor. The reactor comprises a tapering section, and diameters of cross sections of the tapering section gradually decrease from bottom to top. Secondary conversion of alkenes caused by back-mixing is reduced, and thus the yield and selectivity to alkenes are increased.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: June 4, 2019
    Assignee: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
    Inventors: Chunyi Li, Guowei Wang
  • Patent number: 10087376
    Abstract: A catalyst is provided for production of monocyclic aromatic hydrocarbons having a carbon number of 6 to 8 from feedstock in which a 10 vol % distillation temperature is 140° C. or higher and a 90 vol % distillation temperature is 380° C. or lower. The catalyst contains crystalline aluminosilicate including large-pore zeolite having a 12-membered ring structure, and intermediate-pore zeolite having a 10-membered ring structure.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: October 2, 2018
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Shinichiro Yanagawa, Masahide Kobayashi, Kazuaki Hayasaka
  • Patent number: 10040045
    Abstract: Apparatuses and methods for separating regenerated catalyst are provided. In one embodiment, an apparatus for separating regenerated catalyst includes a regeneration vessel including a catalyst bed section. The apparatus includes a catalyst settler physically separated from the catalyst bed section by a wall extending within the regeneration vessel. The catalyst overflowing the catalyst bed section flows over the wall and enters the catalyst settler. The apparatus further includes a pipe in fluid communication with the catalyst settler and configured to deliver regenerated catalyst from the regeneration vessel to another vessel.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: August 7, 2018
    Assignee: UOP LLC
    Inventors: Miladin Crnkovic, Paolo Palmas, Richard A. Johnson, II, Thomas William Lorsbach
  • Patent number: 9816154
    Abstract: A process gas preparation device for an industrial furnace system is disclosed. The gas preparation device includes a preparation reactor having a catalyst. A gas feed line and a gas return line are connected between the industrial furnace and the preparation reactor to form a closed loop. A compressor is situated upstream from the preparation reactor in the feed line. The preparation reactor is also connected with supply lines for hydrocarbon gas and air to be supplied to the preparation reactor. The process gas preparation device also includes a control device with which process gas preparation and return can be regulated and controlled. The gas feed line also has a shut-off valve. The control device can check the functional state of the catalyst by measuring the pressure differential across the catalyst and can initiate a burn-out process therein to clear clogging of the catalyst.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: November 14, 2017
    Assignee: Ipsen, Inc.
    Inventors: Dirk Joritz, Nils Bernhagen, Aloys Heisterkamp, Markus Reinhold, Bernd Edenhofer
  • Patent number: 9810462
    Abstract: Systems and methods for dehumidifying and conditioning air for a commercial building are presented. In one instance, a system involves ventilating a building at a rate higher than the required outdoor airflow rate in order to compensate for the fan being turned off when the compressor is off. Other systems and methods are presented.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: November 7, 2017
    Assignee: Lennox Industries Inc.
    Inventor: Jonathan Douglas
  • Patent number: 9709270
    Abstract: A fluidized bed gasification furnace includes a control device that identifies a defective fluidization spot of a fluidized bed based on distribution of temperatures detected by a plurality of temperature sensors, temporarily increases an amount of supplied combustion gas to air boxes located below the identified defective fluidization spot, and increases a speed of discharge of noncombustibles and a fluidization medium discharged by an extruder.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: July 18, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENVIRONMENTAL & CHEMICAL ENGINEERING CO., LTD.
    Inventors: Jun Sato, Toshimasa Shirai, Yoshihisa Saito, Norio Yoshimitsu, Yasunori Terabe
  • Patent number: 9518736
    Abstract: A water-containing solid fuel drying apparatus that can efficiently dry with low energy consumption by effectively utilizing sensible heat and latent heat of a heating medium for drying, etc. is provided.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: December 13, 2016
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE UNIVERSITY OF TOKYO
    Inventors: Katsuhiko Yokohama, Kenichiro Kosaka, Keigo Matsumoto, Noboru Kawamoto, Yoshiki Yamaguchi, Masaaki Kinoshita, Koji Ohura, Atsushi Tsutsumi, Shozo Kaneko, Kazuhiro Mochizuki, Chihiro Fushimi, Yasuki Kansha
  • Patent number: 9346916
    Abstract: The invention belongs to energy chemical technical field, especially relates to a fluidized bed reactor and a method for preparation of polyoxymethylene dimethyl ethers from dimethoxymethane and paraformaldehyde. The fluidized bed reactor comprises a gas inlet, a gas distributor, a catalyst inlet, a gas outlet, a fluid inlet, a catalyst outlet, a bottom component and an interstage component, a bottom component related gas upward channel, an interstage component related gas upward channel, a fluid outlet, a bottom downcomer and an interstage downcomer.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: May 24, 2016
    Assignees: SHANDONG YUHUANG CHEMICAL CO., LTD., TSINGHUA UNIVERSITY
    Inventors: Jinfu Wang, Qiang Tang, Shengwei Wang, Tiefeng Wang, Shuangxi Chen, Yuqiang Wang
  • Patent number: 9216902
    Abstract: The present invention relates to a method for the production of ethene, CO, and hydrogen in a reactor with a circulating fluidized bed with two independent sections, from feedstocks that contain hydrocarbons with at least 11 carbon atoms or from feedstocks with a high oxygen content, using a catalyst in particulate form. The method teaches that in one of the sections of the reactor, in the absence of oxygen, a catalyst containing a dehydrogenation metal promotes the cracking of the said feedstocks, facilitating the subsequent endothermic reactions. In the other section, the coke is burned with air and the heating of the catalyst is controlled, for the adjustment of the appropriate amount of energy that the heated catalyst will convey to the section in which the endothermic reactions take place. The total ethene yield of the process according to the present invention is approximately 20% by weight in relation to the feedstock.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: December 22, 2015
    Assignee: PETROLEO BRASILEIRO S.A. -PETROBRAS
    Inventors: Andrea de Rezende Pinho, Fabio Leal Mendes, Mauro Silva, Keiji Maeshiro, Antonio Wahib Bogossian Khalil, Julio Amilcar Ramos Cabral, Luis Fernando Soares de Azevedo, Daniel Santos de Albuquerque
  • Patent number: 8999146
    Abstract: Hydrocarbon feed to a catalytic reactor can be heat exchanged with flue gas from a catalyst regenerator. This innovation enables recovery of more energy from flue gas thus resulting in a lower flue gas discharge temperature. As a result, other hot hydrocarbon streams conventionally used to preheat hydrocarbon feed can now be used to generate more high pressure steam.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: April 7, 2015
    Assignee: UOP LLC
    Inventors: Yunbo Liu, Xin X. Zhu, Daniel N. Myers, Patrick D. Walker
  • Patent number: 8877042
    Abstract: The production of light hydrocarbons consisting of ethylene, propylene, butylenes, and of gasoline is enhanced by introducing a heavy oil feedstream derived from an external source into an ancillary downflow reactor that utilizes the same catalyst composition as an adjacent FCC unit for cracking the heavy oil and withdrawing the desired lighter hydrocarbon reaction product stream from the downflow reactor and regenerating the catalyst in the same regeneration vessel that is used to regenerate the spent catalyst from the FCC unit. The efficiency of the recovery of the desired lighter olefinic hydrocarbons is maximized by limiting the feedstream to the downflow reactor to heavy oils that can be processed under relatively harsher conditions, while minimizing production of undesired by-products.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: November 4, 2014
    Assignees: Saudi Arabian Oil Company, Nippon Oil Corporation
    Inventors: Christopher F. Dean, Yuichiro Fujiyama, Takata Okuhara
  • Patent number: 8323477
    Abstract: A process for mixing regenerated and carbonized catalyst involves obstructing upward flow of catalyst by one or more baffles between a catalyst inlet and a feed distributor. Each catalyst stream may be passed to opposite sides of a riser. Baffles obstruct upward flow to effect mixing of regenerated and carbonized catalyst to obtain a more uniform temperature and catalyst mixture before contacting the feed.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: December 4, 2012
    Assignee: UOP LLC
    Inventors: Keith A. Couch, Kelly D. Seibert, Robert L. Mehlberg, Daniel R. Johnson
  • Patent number: 8321082
    Abstract: In a hybrid vehicle, control is executed to operate an engine with fuel injection being performed, when an unexecuted percentage of catalyst degradation suppression control is equal to or greater than a threshold value of the unexecuted percentage, when a power storage percentage of a battery is equal to or greater than a threshold value of the power storage percentage and the battery is charging, and also when a vehicle speed is equal to or greater than a threshold value of the vehicle speed and a cumulative air amount is equal to or greater than a threshold value of the cumulative air amount, when a catalyst temperature is less than a first threshold temperature and equal to or greater than a second threshold temperature, when the catalyst temperature is equal to or greater than the first threshold temperature, when there is a braking request while the engine is operating.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: November 27, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yasushi Ando
  • Patent number: 8282887
    Abstract: A reactor design and process for the dehydrogenation of hydrocarbons is presented. The reactor design includes a multibed catalytic reactor, where each of the reactor beds are fluidized. The catalyst in the reactor cascades through the reactor beds, with fresh catalyst input into the first reactor bed, and the spent catalyst withdrawn from the last reactor bed. The hydrocarbon feedstream is input to the reactor beds in a parallel formation, thereby decreasing the thermal residence time of the hydrocarbons when compared with a single bed fluidized reactor, or a series reactor scheme.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: October 9, 2012
    Assignee: UOP LLC
    Inventors: David N. Myers, Lev Davydov
  • Patent number: 8226818
    Abstract: Disclosed is an FCC apparatus and process in which coked catalyst is recycled to the base of the riser to contact fresh feed through a passage disposed within the riser.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: July 24, 2012
    Assignee: UOP LLC
    Inventor: Michael S. Sandacz
  • Patent number: 8173567
    Abstract: Disclosed is a catalyst distributor and process for spreading catalyst over a regenerator vessel. Nozzles disposed angular to a header of the distributor spread catalyst throughout a full cross section of the catalyst bed.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: May 8, 2012
    Assignee: UOP LLC
    Inventors: Paolo Palmas, Lawrence A. Lacijan, Sujay R. Krishnamurthy, Mohammad-Reza Mostofi-Ashtiani, Paul S. Nishimura, Lisa M. Wolschlag
  • Patent number: 7915191
    Abstract: This invention is directed to a method and apparatus for regenerating a catalyst used in an FCC unit, including providing a spent catalyst into an upper portion of a regenerator, maintaining a calcination phase, a gasification phase, and a combustion phase of fluidized catalyst in the regenerator, combusting carbon in the combustion phase and producing a combustion flue gas, reacting carbon in the gasification phase with the combustion flue gas to form a carbon monoxide rich flue gas, and calcining the spent catalyst with the carbon monoxide rich flue gas.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: March 29, 2011
    Assignee: UOP LLC
    Inventor: Brian W. Hedrick
  • Patent number: 7820034
    Abstract: An apparatus and process for partially upgraded heavy oil diluent production. A crude heavy oil and/or bitumen feed is supplied to an FCC unit having a low activity catalyst and low conversion number. A distillate fraction is supplied for use as diluent to end users. The distillate fraction and FCC unit gas oil products can be supplied to a hydrotreater for upgrading and collected as a synthetic crude product stream. An asphaltene fraction can be supplied to a gasifier for the recovery of power, steam and hydrogen, which can be supplied to the hydrotreater or otherwise within the process or exported.
    Type: Grant
    Filed: October 9, 2006
    Date of Patent: October 26, 2010
    Assignee: Kellogg Brown & Root LLC
    Inventor: Gerard Bruha
  • Patent number: 7815741
    Abstract: A reactor for hydrolytic splitting of cellulose under high pressure and heat has an inlet and outlet each with a cross-sectional area smaller than the cross-sectional area of the reactor. The pressure and heat in the reactor forms a cellulose plug within the inlet and the outlet. The inlet plug stops cellulose from escaping out the inlet. Cellulose begins to breakdown under heat, pressure, and if required an acid or a lubricant. The outlet plug slows downstream movement of cooking cellulose. Cellulose may be pre-treated by the addition of water, a weak acid, a lubricant, or a combination of the foregoing. The outer surface of the plug cooks faster than the inner core of the plug, becomes a liquefied slurry, and slides faster towards the outlet than the inner core.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: October 19, 2010
    Inventor: David A. Olson
  • Patent number: 7658837
    Abstract: A process and device to optimize the yield of fluid catalytic cracking products through a reactive stripping process are disclosed. One or more hydrocarbon streams (3) are introduced in an intermediary region of the stripper (1) of a fluid catalytic cracking unit (FCC), from a device that allows a homogeneous distribution with adequate dispersion. This/these stream(s) react(s) with the catalyst of FCC, although its activity is reduced due to the adsorption of hydrocarbons in the reaction zone, generating products that improve and/or change the global distribution of products, providing a refinery profile adequate to meet quality demands and requirements.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: February 9, 2010
    Assignee: Petroleo Brasileiro S.A.-Petrobras
    Inventors: Henrique Soares Cerqueira, Claudia Maria de Lacerda Alvarenga Baptista, William Richard Gilbert, Oscar Rene Chamberlain Pravia
  • Publication number: 20090321319
    Abstract: Methods and systems of processing a hydrocarbonaceous feed stock flows are provided. In one aspect, the method includes providing two or more hydroprocessing stages disposed in sequence, each hydroprocessing stage having a hydroprocessing reaction zone with a hydrogen requirement and each stage in fluid communication with the preceding stage. A hydrogen source is provided substantially free of hydrogen from a hydrogen recycle compressor. The hydrocarbonaceous feed stock flow is separated into an portions of fresh feed for each hydroprocessing stage, and then supplying the first portion of fresh feed with hydrogen from the hydrogen source in an amount satisfying substantially all of the hydrogen requirements of the hydroprocessing stages to a first hydroprocessing zone.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 31, 2009
    Inventors: Peter Kokayeff, Charles P. Luebke, John Anthony Petri
  • Patent number: 7632977
    Abstract: Disclosed is a process for making middle distillate and lower olefins. The process includes catalytically cracking a gas oil feedstock within a riser reactor zone by contacting under suitable catalytic cracking conditions within the riser reactor zone the gas oil feedstock with a middle distillate selective cracking catalyst that comprises amorphous silica alumina and a zeolite to yield a cracked gas oil product and a spent cracking catalyst. The spent cracking catalyst is regenerated to yield a regenerated cracking catalyst. Within an intermediate cracking reactor such as a dense bed reactor zone and under suitable high severity cracking conditions a gasoline feedstock is contacted with the regenerated cracking catalyst to yield a cracked gasoline product and a used regenerated cracking catalyst. The used regenerated cracking catalyst is utilized as the middle distillate selective catalyst.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: December 15, 2009
    Assignee: Shell Oil Company
    Inventors: Weijian Mo, Georghios Agamemnonons Hadjigeorge, Frank Hsian Hok Khouw
  • Patent number: 7575730
    Abstract: A method is provided for introducing or reintroducing a gas into a slurry vessel holding a slurry comprising a liquid and solid particles and having a gas distributor for injecting a gas into the slurry, where the gas distributor includes a sparger device comprising an apertured sparger portion inside the slurry vessel, an inlet portion leading into the slurry vessel and an outlet portion leading from the slurry vessel, and a valve, external of the slurry vessel, operable to allow or deny flow from the sparger portion out through the outlet portion of the sparger device. The method comprises operating the valve to allow flow through the outlet portion of the sparger device, flushing the sparger device through the outlet portion to remove settled material which may be present in the sparger device, operating the valve to deny flow through the outlet portion of the sparger device, and introducing or reintroducing the gas into the slurry vessel through the sparger device.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: August 18, 2009
    Assignee: SASOL Technology (Proprietary) Limited
    Inventor: André Peter Steynberg
  • Patent number: 7572364
    Abstract: A fines injection apparatus, a fluid catalytic cracking (FCC) system having a fines injection apparatus, and a method for using the same are provided. In one embodiment, a FCC system includes a FCC unit, a fines collector, and a fines injector coupled to the fines collector for retuning the fines recovered in the fines collector to the FCC unit. In another embodiment, an apparatus for injecting fines into a FCC system includes a fines separator coupled to an effluent stream and an injection apparatus coupled to a regenerator. A conduit is provided for delivering collected fines from the fines separator to the injection apparatus. In yet another embodiment, a method for injecting fines into FCC system includes collecting fines from a waste stream of a FCC system, automatically transferring the collected fines to a fines injection apparatus, and periodically injecting the transferred fines into the FCC system.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: August 11, 2009
    Assignee: Intercat Equipment, Inc.
    Inventors: Martin Evans, Manfred William Brown
  • Patent number: 7534341
    Abstract: Method of metering at least one solid, particulate catalyst into a reactor containing a fluidized bed (11) of particles in an at least partly gaseous medium, in which the catalyst is metered discontinuously at prescribed time intervals into the fluidized bed (11) at at least one metering point (10). According to the present invention, a fluid stream is firstly introduced into the reactor (5) so that a region having a reduced particle density is formed in the fluidized bed (11) around the metering point (10) and the catalyst is subsequently metered into this region. As a result of the prior introduction of a fluid stream (“preblowing”) before the actual introduction of the catalyst, the catalyst can penetrate significantly deeper into the fluidized bed from the metering point due to the reduced particle density and is dispersed better.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: May 19, 2009
    Assignee: Basell Polyolefine GmbH
    Inventors: Rainer Karer, Kaspar Evertz, Peter Kölle, Hans-Jacob Feindt
  • Patent number: 7491315
    Abstract: A dual riser FCC process is disclosed wherein first and second hydrocarbon feeds (5, 6) are supplied to the respective first and second risers (2, 4) to make an effluent rich in ethylene, propylene and/or aromatics. Where the hydrocarbon feeds are different, the respective risers can have different conditions to favor conversion to ethylene and/or propylene. A minor amount of a coke precursor (80, 82) can be added to one or both of the hydrocarbon feeds (5, 6) to reduce or eliminate the amount of supplemental fuel needed to heat balance the system. The different feeds, including the coke precursor and any recycle streams (36, 44) can be segregated by type to improve olefin yields, including an embodiment where the paraffinic feeds are supplied to one riser and the olefinic feeds to the other.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: February 17, 2009
    Assignee: Kellogg Brown & Root LLC
    Inventors: Curtis N. Eng, Rik B. Miller
  • Patent number: 7484773
    Abstract: Self purging expansion joint can include first annular seal sleeve connecting bellows to first conduit and second annular seal sleeve connecting bellows to second conduit. Flow-restricting orifice(s) can allow a higher pressure external fluid to flow through the annular passage to purge the bellows and into the primary fluid flow passage of the expansion joint containing a lower pressure fluid. Self purging expansion joint can be utilized in a disengager vessel of a fluid catalytic cracking (FCC) unit, for example, between primary and secondary stripping cyclones.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: February 3, 2009
    Assignee: Kellogg Brown & Root LLC
    Inventor: Phillip K. Niccum
  • Patent number: 7419585
    Abstract: A process for upgrading a residua feedstock using a short vapor contact time thermal process unit comprised of a horizontal moving bed of fluidized hot particles. The residua feedstock is preferably atomized so that the Sauter mean diameter of the residua feedstock entering the reactor is less than about 2500 ?m. One or more horizontally disposed screws is preferably used to fluidize a bed of hot particles.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: September 2, 2008
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: Peter S. Maa, Craig Y. Sabottke
  • Patent number: 7399450
    Abstract: A fluidized-bed reactor is disclosed. The fluidized-bed reactor steadies the gas flow through the fluidized bed chamber of the reactor. The swirl chamber of the reactor consists of a conical housing in which a conical insert is also situated. This creates an annular gap between the housing and the insert, which acts as the swirl chamber and which, according to the geometry of the two components, causes a velocity of the gas flow which remains the same along the height, which increases or which decreases. Such a reactor can also be called a constant annular-gap reactor.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: July 15, 2008
    Inventor: Sebastian Zimmer
  • Patent number: 7276210
    Abstract: A stripping apparatus for desorbing gases from solid particles through which flows counter-currently a stripping fluid is described, which comprises a series of sets of at least two parallel, segmented, baffle plates each, with the segmented baffles being oriented so that the rows are offset relative to rows of other levels, where the thickness and separation of said sets of baffles is so dimensioned as to reduce coalescence of the size of the formed bubbles and optimize the hydrocarbons desorption from said fluidized solid particles. The solid particles are mainly spent catalyst particles from a FCC process. The stripping process to be carried out in a fluidized bed comprises contacting the spent catalyst with a stripping fluid that flows upwardly in the fluidized bed in the form of bubbles. Adsorbed hydrocarbons present in the spent catalyst are transferred from the catalyst emulsion that flows downwardly to the upwardly moving bubbles, so as to promote the efficient recovery of cracked products.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: October 2, 2007
    Assignee: Petroleo Brasileiro S.A. -Petrobras
    Inventors: Henrique Soares Cerqueira, Cláudia M De Lacerda Alvarenga Baptista, José Mózart Fusco
  • Patent number: 7169293
    Abstract: Disclosed is an apparatus and process for controlling space velocity in a fluidized catalytic conversion reactor. The catalyst flux rate can be adjusted during the process of the reaction to adjust the space velocity and maintain a fast fluidized flow regime therein. The set parameter in the reactor may be pressure drop which is proportional to catalyst density.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: January 30, 2007
    Assignee: UOP LLC
    Inventors: David A. Lomas, Lawrence W. Miller
  • Patent number: 7112311
    Abstract: A cooling method of a hydrotreating plant having a desulfurization section (1) including a furnace (12) for heating liquid to be processed, reactors (14, 15) for hydrotreating sulfur to generate hydrogen sulfide, a hydrogen sulfide absorber (19) for absorbing the hydrogen sulfide generated in the reactors (14, 15), and a compressor (21) for compressing and transferring fluid from the hydrogen sulfide absorber (19) toward the reactors (14, 15), the cooling method comprising the steps of gradually depressurizing the hydrotreating plant at the desulfurization section (1) to a pressure level at which reactor material does not embrittle and gas does not leak due to difference of mechanical thermal expansion in the plant after stopping supply of the liquid to be processed, operating the compressor (21) approximately at the maximum rotation number, and completely extinguishing burners (12A, 12B) in the furnace (12) during plant shutdown operation.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: September 26, 2006
    Assignees: Nippon Petroleum Refining Co., Ltd., Softard Industries Co., Ltd.
    Inventors: Yuji Yoshizumi, Hidekatsu Honda, Masayuki Shoji, Toshihiko Nasu, Katsuhiko Kawakami, Junichi Takano
  • Patent number: 7101474
    Abstract: A shelf is incorporated into a typical FCC riser that permits the tips of the nozzles to extend past the wall of the riser while preventing the tips from promoting coke build-up and protecting the tips from erosion. The shelf can be part of an angled section that often appears in a transition zone for increasing the internal diameter of the riser to accommodate the volumetric expansion of the feed. The shelf section reduces the non-uniformity in the mixing of the catalyst and feed and minimizes backmixing of the feed injection. The shelf of this invention accomplishes these objectives without recessing the feed injectors into the riser wall which can interfere with the spray pattern.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: September 5, 2006
    Assignee: UOP LLC
    Inventor: Aziz A. Sattar
  • Patent number: 6780308
    Abstract: A baffle-style stripper for an FCC process comprising sloped baffles in which a greater volumetric flow rate of stripping medium permeates openings in a bottom section of the baffle than through a top section of the baffle for low catalyst flux stripping operations. When low catalyst flux is used, the catalyst runs from baffle to baffle closer to the bottom edge of the baffle. Hence, more fluidization from stripping medium is concentrated near the lower edge of the baffle. The greater fluidization at the bottom section of the baffle is accomplished by providing greater opening area per baffle area in the lower section of the baffle than in the top section of the baffle.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: August 24, 2004
    Assignee: UOP LLC
    Inventors: Brian W. Hedrick, Thuy Khanh T. Nguyen
  • Patent number: 6723227
    Abstract: Fluidized catalytic cracking process which process comprises: (a) separating the hydrocarbon product from the spent catalyst by means of one or more gas-solid separation steps; (b) stripping the spent catalyst in a dense phase fluidized stripping zone by introducing a stripping medium in the lower portion of the stripping zone; (c) introducing part of the spent catalyst obtained in step (b) to a regeneration zone wherein the coke is removed from the catalyst by means of combustion; (d) introducing the remaining part of the spent catalyst and part of the hot regenerated catalyst into a lower portion of an elongated dilute phase stripping zone; (e) introducing a stream of a stripping medium into the lower portion of the dilute phase stripping zone to contact the resulting mixture of spent catalyst and regenerated catalyst therein; (f) passing a stream of the spent catalyst mixed with the hot regenerated catalyst and stripping medium in the dilute phase stripping zone; (g) introducing the separated catalyst of s
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: April 20, 2004
    Assignee: Shell Oil Company
    Inventor: Rene Samson
  • Publication number: 20040069681
    Abstract: A catalyst regenerator for regenerating spent light FCC catalyst and heating the catalyst to supply heat to an FCC reactor. The regenerator has discharge outlets for catalyst and off gas and a valve for introducing spent catalyst through a central stand pipe portion. The regenerator houses a dense phase catalyst bed. A centerwell receives a lower end of the standpipe portion and defines an annulus therebetween. The spent catalyst is introduced through the standpipe portion into the annulus. A fuel distributor introduces fuel into the centerwell for mixing with the catalyst in the annulus. A fluidization distributor introduces fluidization gas into the centerwell for fluidizing the catalyst in the annulus. A radial slot in the centerwell introduces the catalyst and fuel mixture from the annulus below the upper surface of the dense phase bed. An air distributor located below the radial slot introduces combustion air into the dense phase bed.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 15, 2004
    Applicant: Kellogg Brown & Root, Inc.
    Inventors: Robert B. Peterson, Chris Santner, Michael Tallman
  • Publication number: 20040060846
    Abstract: The present invention provides a catalytic cracking reactor system and process in which a riser reactor is configured to have two sections of different radii in order to produced improved selectivity to propene and butenes as products.
    Type: Application
    Filed: September 30, 2003
    Publication date: April 1, 2004
    Inventor: Warren S. Letzsch
  • Publication number: 20030234209
    Abstract: This invention provides a method for controlling solids circulation in a gas-solids reaction system. The method entails aerating solid particles in a standpipe. Aeration fluid is injected into the standpipe at the appropriate location to increase apparent density of the solid particles.
    Type: Application
    Filed: May 2, 2003
    Publication date: December 25, 2003
    Inventors: Jeffrey S. Smith, Nicolas P. Coute, Rathna P. Davuluri, Steven S. Lowenthal, Suisheng M. Dou
  • Publication number: 20030111388
    Abstract: This invention relates to a process for catalytically upgrading light petroleum hydrocarbons accompanied by low temperature regenerating the catalyst, which comprises injecting the light petroleum hydrocarbons into a catalytic cracking reactor, contacting the light petroleum hydrocarbons with a regenerated catalyst and carrying out the reaction, separating the reaction products regenerating the stripped catalyst for 10 to 50 minutes under the regeneration conditions of a temperature of 400 to 600° C. and a pressure of 0.1 to 0.6Mpa; recycling the regenerated catalyst into the reactor. The process of the present invention can reduce the olefin content of gasoline, increase the cetane number of diesel oils, and decrease the contents of sulfur and nitrogen to some extent.
    Type: Application
    Filed: May 29, 2002
    Publication date: June 19, 2003
    Applicant: China Petroleum & Chemical Corporation and Research Institute Of Petroleum Processing
    Inventors: Ruichi Zhang, Jianguo Ma, Zhili Qin, Jiushun Zhang, Zhijian Da
  • Publication number: 20030098259
    Abstract: A composition for controlling NOx emissions during FCC processes comprises (i) an acidic oxide support, (ii) cerium oxide, (iii) a lanthanide oxide other than ceria such as praseodymium oxide, and (iv), optionally, an oxide of a metal from Groups Ib and IIb such as copper, silver and zinc.
    Type: Application
    Filed: November 23, 2001
    Publication date: May 29, 2003
    Applicant: ENGELHARD CORPORATION
    Inventors: C.P. Kelkar, David Stockwell, Samuel Tauster
  • Patent number: 6569317
    Abstract: An apparatus comprising a trickle valve positioned at the lower end of a vertical dipleg of a gas-solids separator comprising a pair of co-operable clamshell doors arranged in such a manner that mutual opposite swinging movement between a closed position wherein the doors adjoin along a midline, and an open position wherein the doors swing outwardly around a horizontal axis of rotation, is possible, and wherein either clamshell door is provided with means to press the doors together towards a closed position and at least one clamshell door is provided with an opening.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: May 27, 2003
    Assignee: Shell Oil Company
    Inventors: Hendricus Arien Dirkse, Hubertus Wilhelmus Albertus Dries, Willem Rozema
  • Publication number: 20030075480
    Abstract: A fluidized particulate solids contacting process for reducing regenerator flue gas NOx emissions and/or permitting operating with an increased equilibrium solids vanadium level, which process may be an FCC process or a fluidized particulate solid hydrocarbon treating process, wherein spent FCC catalyst or other spent solid is in a regenerator with an oxygen-containing regeneration gas under catalyst (solid) regeneration conditions which include a combination of at least a regeneration temperature and an oxygen level in the regeneration gas which is effective to burn off the spent solid a majority of carbonaceous deposits thereon, while substantially preventing the formation of NOx, and thereby produce a regenerated solid having a carbon level reduced from that of the spent solid and a flue gas; maintaining the regenerated solid in a fluidized state with a fluidizing media that substantially prevents any further oxidation or regeneration; and returning the fluidized regenerated solid to the reactor (contactor
    Type: Application
    Filed: September 23, 2002
    Publication date: April 24, 2003
    Applicant: BARCO Processes Joint Venture
    Inventor: David B. Bartholic
  • Patent number: 6508930
    Abstract: The operation of fluid catalytic converter (FCC) units can be stabilized through use of tests wherein a first catalyst and a second catalyst are introduced into the FCC unit in at least two different ratios, at two different times, in order to establish the effect of these catalyst ratios on a given operating parameter. This information is used to establish a unit response curve (or unit response envelope) for the catalyst ratios versus the operating parameter. This unit response curve (or envelope) is thereafter used to control the operation of the FCC unit.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: January 21, 2003
    Assignee: Intercat, Inc.
    Inventors: Martin Evans, Albert A. Vierheilig, John A. Paraskos
  • Patent number: 6139720
    Abstract: The production of carbon monoxide as a combustion off-gas is maximized by the use of a hot stripping zone arrangement that provides catalyst mixing to establish a uniform catalyst temperature and thorough contacting of the well-mixed hot catalyst in a confined portion of the hot stripping zone. The hot stripping zone delivers the hot stripped catalyst to a bubbling-bed regeneration zone by an oxygen-starved lift stream that distributes the catalyst to the top of the bubbling-bed in the regeneration zone. The process delivers spent catalyst with about 1 wt % of coke to the reaction zone and a spent combustion gas or flue gas stream having a CO.sub.2 to CO ratio of at least 1. The operation reduces the heat evolution in the regeneration step and allows relatively low temperature operation of the regeneration zone without use of catalyst coolers.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: October 31, 2000
    Assignee: UOP LLC
    Inventor: David A. Lomas
  • Patent number: 6126813
    Abstract: The invention relates to a hydrocarbon catalytic cracking method in the presence of a catalyst in fluidized phase, within a tubular type reactor (1) containing an injection area.According to the invention, a substantial part of the load to be cracked is introduced into the injection area using at least one means of injection (3) of such load against the flow, in relation to the direction of flow of the catalyst grains, and a substantial part of the load to be cracked is simultaneously introduced in the same area using at least one means of injection (2) of such load in direction of the flow in relation to the direction of flow of the catalyst grains.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: October 3, 2000
    Assignee: Total Raffinage Distribution S.A.
    Inventors: Marc Fersing, Mariano Del Pozo
  • Patent number: 6059958
    Abstract: A process for the fluid catalytic cracking of heavy feeds under a heat balance regime is described, where one or more catalyst coolers external to the regenerator cool a stream of regenerated catalyst. A portion of said stream returns to the regenerator and a portion of the cooled regenerated catalyst is admixed to the non-cooled regenerated catalyst at a temperature substantially lower than the regenerator temperature, said admixture being brought into contact with the hydrocarbon feed to be cracked. As a result, the control of the catalyst circulation is rendered independent from the heat balance of the unit, with minimization of the thermal cracking, and therefore lower coke and fuel gas products.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: May 9, 2000
    Assignee: Petroleo Brasileiro S.A.-Petrobras
    Inventors: Jose Geraldo Furtado Ramos, Jose Mozart Fusco, Moacir Jose Bampi, Emanuel Freire Sandes, Francisco Carlos Da Costa Barros, Jorivaldo Medeiros, Claudio Fonseca Machado Dos Santos, Aurelio Medina Dubois, Ingrid Alexandra Zech, Monica Einsfeldt, Maria Celia Dos Santos Da Rocha
  • Patent number: 6045690
    Abstract: An object is to increase cracking rate of heavy fraction oils while producing a lessened amount of dry gases generated by the hydrogen transfer reaction and by the overcracking to obtain light fraction olefins in a high yield. A process for the fluid catalytic cracking of heavy fraction oils, which comprises steps of feeding the heavy fraction oils to a raw oil introducing portion provided at a reaction zone inlet; feeding a part of a regenerated catalyst taken out of a catalyst-regenerating zone to a catalyst introducing portion provided at a reaction zone inlet; and feeding another part of the regenerated catalyst taken out of the catalyst-regenerating zone to at least one catalyst introducing portion which is provided between the catalyst introducing portion provided at the reaction zone inlet and reaction zone outlet, the catalytic cracking in the reaction zone being carried out under conditions of a contact time of 0.1 to 3.0 sec. a reaction zone outlet temperature of 530 to 700.degree. C.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: April 4, 2000
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Yuichiro Fujiyama, Michiaki Adachi, Toshiyasu Okuhara, Shunichi Yamamoto
  • Patent number: 6042717
    Abstract: An FCC feed injection arrangement injects feed transversely from the sides of a restricted opening into a stream of FCC catalyst to provide good feed and catalyst contacting in an arrangement that simplifies external pipe configurations and maintenance of the feed injection system. The invention forms a venturi or restricted opening by forming a generally square opening between two parallel extended chords on opposite sides of the riser. A venturi area may be built out of refractory lining or other abrasion resistant structures. The invention may use horizontally extended pipes that are tangentially positioned apart from each other across from the restricted opening to provide a simple construction for the feed injection arrangement. The pipes are easily inserted and withdrawn from the riser to permit easy maintenance of the nozzles in the highly erosive environment.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: March 28, 2000
    Assignee: UOP LLC
    Inventors: William H. Radcliffe, Brian W. Hedrick