Including External Recycle Loop Patents (Class 422/234)
  • Patent number: 8097213
    Abstract: Material delivery systems, methods of delivering material and methods of calibrating such systems and methods are disclosed. The material delivery system includes a delivery vessel, a load cell, and automated weight calibration device. The delivery vessel has at least an outlet adapted for coupling to an unit. The load cell is configured to provide a metric indicative of an amount of material in the delivery vessel. The automated weight calibration device is configured to impart a known force onto the at least one load cell. A method includes delivering material to a unit and determining how much material is delivered by a change in weight of a delivery vessel, wherein the delivery vessel comprises a load cell; applying a known calibration force to the load cell; and comparing a metric from the load cell of the known calibration with an expected metric.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: January 17, 2012
    Assignee: Intercat Equipment, Inc.
    Inventors: Al Vierheilig, Brian Dorcheus
  • Patent number: 8097219
    Abstract: An apparatus for providing reaction of fluids and separation of products with increased residence time. The apparatus includes a stationary shell, a rotating hollow cylindrical component disposed in the stationary shell, a residence-time increasing device external to the stationary shell, a standpipe for introducing fluid into an interior cavity of the hollow cylindrical component from the residence-time increasing device, a first outlet in fluid flow communication with the interior cavity of the hollow cylindrical component for a less dense phase fluid, and a second outlet in fluid flow communication with the interior cavity of the hollow cylindrical component for a more dense phase fluid.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: January 17, 2012
    Assignee: UT-Battelle LLC
    Inventors: Joseph F Birdwell, Jr., Harold L. Jennings, Joanna McFarlane, Constantino Tsouris
  • Patent number: 8071044
    Abstract: In an isomerization process where the isomerization effluent (108) is fractionated in a deisohexanizer (116) to provide an overhead (118) containing dimethylbutanes and a higher boiling fraction (122) containing normal hexane, the higher boiling is contacted with a selectively permeable membrane (124) to provide a retentate containing methylcyclopentane (128). If desired, the normal hexane-containing permeate can be recycled for isomerization. The preferred membranes are sieving membranes having a C6 Permeate Flow Index of at least 0.01 and a C6 Permeate Flow Ratio of at least 1.25:1.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: December 6, 2011
    Assignee: UOP LLC
    Inventors: Lynn H. Rice, David J. Shecterle
  • Publication number: 20110295049
    Abstract: A catalyst return apparatus is disclosed as well as a riser reactor system comprising the conduit apparatus and a riser reactor, the conduit apparatus comprising a catalyst return conduit and at least two flow control devices in series, each flow control device arranged to control the flow of fluid through the conduit, wherein the length of the catalyst return conduit is more than 20 m. A process for reacting a feedstock in a riser reactor system comprising a riser reactor, the catalyst return apparatus and, and a stage vessel, the process comprising: holding a fluid comprising the catalyst in the at least one stage vessel for a residence time of at least 10 seconds.
    Type: Application
    Filed: December 21, 2009
    Publication date: December 1, 2011
    Inventors: Leslie Andrew Chewter, Hubertus Wilhelmus Albertus Dries, Rene Samson, Mao Ye
  • Publication number: 20110282108
    Abstract: The present invention relates to an apparatus for producing alcohols from olefins, comprising: a hydroformylation reactor wherein aldehydes are produced from olefins; a catalyst/aldehydes separator; a hydrogenation reactor wherein the aldehydes are hydrogenated to produce alcohols; and a distillation column. The hydroformylation reactor is equipped with a distributor plate, which has a broad contact surface for providing sufficient reaction area for reactants such as olefins and synthesis gas, and allows the reaction mixture to circulate and mix sufficiently, which contribute to excellent efficiency in terms of production of aldehydes. In addition, the hydrogenation reactor suppresses sub-reactions to improve the production yield of alcohols.
    Type: Application
    Filed: March 30, 2011
    Publication date: November 17, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Dong-Hyun Ko, Sung-Shik Eom, Yong-Jin Choe, Chan-Hong Lee, Moo-Ho Hong, O-Hak Kwon, Dae-Chul Kim, Jae-Hui Choi
  • Publication number: 20110282114
    Abstract: This application provides a process for the production of alkylate blending components, comprising introducing a hydrocarbon feed stream comprising an olefin to an orifice of a nozzle, at a close distance from the orifice; and wherein the nozzle dispenses a mixture of one or more recirculated streams and the hydrocarbon feed stream through a throat of the nozzle to make alkylate gasoline blending components. This application also provides a process unit for the production of alkylate gasoline, comprising: a) a nozzle having an orifice that dispenses one or more recirculated streams comprising ionic liquid catalyst into a chamber in the nozzle, b) a conduit for introducing a hydrocarbon feed stream comprising an olefin to the orifice at a close distance from the orifice; and c) a throat connecting the chamber in the nozzle to an alkylation zone.
    Type: Application
    Filed: May 14, 2010
    Publication date: November 17, 2011
    Inventors: Huping Luo, Moinuddin Ahmed, Krishniah Parimi, Bong-Kyu Chang
  • Patent number: 8034884
    Abstract: Gas-phase fluidized-bed reactor for polymerizing ethylenically unsaturated monomers, comprising a reactor chamber (1) in the form of a vertical tube, if desired a calming zone (2) following the upper section of the reactor chamber, a circulation gas line (3), a circulation gas compressor (4) and a cooling device (5), where, in the region of transition of the reaction gas from the circulation gas line into the reactor chamber and in the lower section of the reactor chamber itself, there is either no gas distributor plate at all or only a gas distributor plate the total surface area of whose gas orifices is more than 20% of the total surface area of said gas distributor plate.
    Type: Grant
    Filed: September 7, 2009
    Date of Patent: October 11, 2011
    Inventors: Rainer Karer, Kaspar Evertz, Wolfgang Micklitz, Hans-Jacob Feindt, Philipp Rosendorfer, Peter Kölle
  • Publication number: 20110233471
    Abstract: Using a method for supplying a reactor (32) for generating crude synthesis gas with fuel (3), the fuel supply of a pressurized gasification system according to the line is to be configured in such a manner that the introduction of nitrogen into the crude gas is minimized or completely avoided. This is achieved in that—for inertization and loosening of the fuel in the storage container (2), —for loosening and fluidization of the content of the lock containers (5), —as the lock gas from the lock containers (5), —for loosening and fluidization in the feed container (29), as well as—for feed of the fuel between the system parts and out of the feed container (29) to the gasification reactor (32), a gas consisting predominantly of CO2 (more than 95 vol.-% CO2 with admixtures such as H2, CO, N2, hydrocarbons or the like) is used.
    Type: Application
    Filed: November 20, 2009
    Publication date: September 29, 2011
    Applicant: UHDE GMBH
    Inventors: Stefan Hamel, Johannes Kowoll
  • Publication number: 20110220846
    Abstract: A non-densified feedstock is fed into a modified countercurrent gasifier, and syngas and char are produced from an upper portion of the gasifier. In the preferred embodiment, propane gas is injected into a lower portion of the gasifier as unconsolidated straw feedstock is metered into a gasifier feedstock inlet. The feedstock is converted into syngas and char in a combustion section of the gasifier. A portion of the syngas and char is recycled within the gasifier. After the syngas and char flow out of a gasifier production outlet, the char is separated from the syngas in a cyclone separator. The syngas is used to produce power at the facility where the syngas is produced.
    Type: Application
    Filed: January 14, 2010
    Publication date: September 15, 2011
    Inventors: Gary M. Banowetz, Hossien El-Nashaar, Jeffrey J. Steiner, David Gady
  • Publication number: 20110220546
    Abstract: A hydrocarbon feedstock is hydrocracked in a hydrocracking zone and the effluent is fractioned to recover a light fraction, a middle fraction containing aromatic compounds and a heavy fraction. The heavy fraction is recycled to the hydrocracking zone for further hydrocracking. The middle fraction is introduced to an aromatic separation zone. A product stream is recovered from the aromatic separation zone comprising a middle fraction having a reduced content of aromatic compounds as compared to the middle fraction recovered from the fractionator. Aromatics from the aromatic separation zone are recycled to the hydrocracking zone for further hydrogenation and cracking.
    Type: Application
    Filed: March 15, 2010
    Publication date: September 15, 2011
    Inventors: OMER REFA KOSEOGLU, ADNAN AL-HAJJI, ALI MAHMOOD AL-SOMALI, HENDRIK MULLER, MOHAMMED ABDULLAH AL-GHAMDI
  • Publication number: 20110196048
    Abstract: A hydrocarbon synthesis reaction apparatus which synthesizes a hydrocarbon compound by a chemical reaction of a synthesis gas including a hydrogen and a carbon monoxide as the main components, and a slurry having solid catalyst particles suspended in a liquid, the apparatus is provided with: a reactor in which the synthesis gas contacts with the slurry; and an unreacted gas supply device which draws unreacted gas from the reactor, then pressurizes the unreacted gas, and supplies the unreacted gas to a constituent device which constitutes the hydrocarbon synthesis reaction apparatus.
    Type: Application
    Filed: September 25, 2009
    Publication date: August 11, 2011
    Inventors: Yasuhiro Onishi, Yuzuru Kato, Eiichi Yamada
  • Patent number: 7981376
    Abstract: In a normal butane isomerization process where the isomerization effluent (108, 114) is fractionated in a deisobutanizer (116) operated such that a lower boiling fraction (118) is provided containing at least 80 mass-% isobutane and a higher boiling fraction (122) containing normal butane and at least 10 mass-% isobutane. The higher boiling fraction (122) is contacted with a selectively permeable membrane (124) to provide a permeate (126) containing normal butane-containing and a retentate (128) containing at least 80 mass-% isobutane. The preferred membranes are sieving membranes having a C4 Permeate Flow Index of at least 0.01 and a C4 Permeate Flow Ratio of at least 1.25:1.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: July 19, 2011
    Assignee: UOP LLC
    Inventors: David J. Shecterle, Dale J. Shields
  • Patent number: 7964156
    Abstract: Solvent extraction is used to remove wax and contaminants from an iron-based Fischer-Tropsch catalyst in a natural circulation continuous-flow system. The wax-free catalyst is then subjected to controlled oxidation to convert the iron to its initial oxidized state, Fe203. Reactivation of the oxide catalyst precursor is carried out by addition of synthesis gas.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: June 21, 2011
    Assignee: Rentech, Inc.
    Inventors: Belma Demirel, Mark S. Bohn, Charles B. Benham, James E. Siebarth, Mark D. Ibsen
  • Publication number: 20110135544
    Abstract: The present invention relates to a method for preparing aldehydes by reacting olefins with a synthesis gas including carbon monoxide and hydrogen, and to an apparatus therefore. More particularly, the present invention relates to a method for preparing aldehydes, characterized by spraying and supplying olefins, synthesis gas including carbon monoxide and hydrogen, and a catalyst composition into an oxo reactor through a nozzle, and to an apparatus therefore. According to the present invention, the hydroformylation efficiency can be improved, thereby obtaining desirable aldehydes with a high yield.
    Type: Application
    Filed: January 17, 2011
    Publication date: June 9, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Moo-Ho Hong, Dong-Hyun Ko, Sang-Oeb Na, Sung-Shik Eom, Sang-Gi Lee, O-Hark Kwon, Dae-Chul Kim, JAE-Hui Choi
  • Patent number: 7943099
    Abstract: A reactor for reacting at least two gases in the presence of a liquid phase, provided with an external liquid phase circulation device and including at least one injector for injecting the gases and the externally circulated liquid phase. In the injector the mixing of the gases together and with the externally circulated liquid phase only begins at the outlet of the injector.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: May 17, 2011
    Assignee: SOLVAY (Societe Anonyme)
    Inventors: Michel Strebelle, Michel Lempereur
  • Publication number: 20110068047
    Abstract: This invention relates to methods and units for mitigation of carbon oxides during hydrotreating hydrocarbons including mineral oil based streams and biological oil based streams. A hydrotreating unit includes a first hydrotreating reactor for receiving a mineral oil based hydrocarbon stream and forming a first hydrotreated product stream, and a second hydrotreating reactor for receiving a biological oil based hydrocarbon stream and forming a second hydrotreated product stream.
    Type: Application
    Filed: September 22, 2009
    Publication date: March 24, 2011
    Applicant: BP CORPORATION NORTH AMERICA INC.
    Inventors: Nicholas J. Gudde, John W. Shabaker
  • Patent number: 7906082
    Abstract: Method and apparatus for producing biodiesel fuel, i.e., alkyl ester, from vegetable and/or animal oil. A transesterification catalyst is prepared in a base catalyst tank by spraying alkyl alcohol under pressure through jets at metal hydroxide pellets until the pellets have fully reacted with the alcohol. The oil is heated and transesterified in the presence of alkyl alcohol and the transesterification catalyst in a closed, recirculating transesterification flow system under slight cavitation to yield product alkyl ester and product glycerol. Cavitation is achieved by permitting air to enter the transesterification flow system through an adjustable air inlet valve. When permitted to stand, product alkyl ester forms an upper layer that is decanted and subjected to purification steps, to remove particulates and alkyl alcohol from the product alkyl ester, and a lower layer of product glycerol is drained away.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: March 15, 2011
    Inventor: Michael F. Pelly
  • Patent number: 7897134
    Abstract: A system (100) for calcining natural gypsum, synthetic gypsum (112) or a combination thereof, the system including: a mill (114) for grinding and drying natural gypsum, synthetic gypsum (112) or a combination thereof, to produce dried gypsum (116); a flash calciner (118) for calcining the dried gypsum to produce an exhaust gas (130) and calcined gypsum (128); and a mechanism (134) for transporting at least a portion of the exhaust gas (130) produced by the flash calciner (118) to an air heater (126) that supplies hot gas (126a) to the flash calciner (118).
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: March 1, 2011
    Assignee: ALSTOM Technology Ltd
    Inventor: Michael M. Chen
  • Patent number: 7897124
    Abstract: Biogases such as natural gas and other gases capable of being biologically derived by digestion of organic matter are converted to a clean-burning hydrocarbon liquid fuel in a continuous process wherein a biogas is fed to a reaction vessel where the biogas contacts a liquid petroleum fraction and a transition metal catalyst immersed in the liquid, vaporized product gas is drawn from a vapor space above the liquid level, condensed, and fed to a product vessel where condensate is separated from uncondensed gas and drawn off as the liquid product fuel as uncondensed gas is recycled to the reaction vessel.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: March 1, 2011
    Inventors: Rudolf W. Gunnerman, Peter W. Gunnerman
  • Patent number: 7896934
    Abstract: A gas-generating apparatus (10) includes a reaction chamber (18) containing a solid fuel component (24) and a liquid fuel component (22) that is introduced into the reaction chamber by a fluid path, such as a tube, nozzle, or valve. The flow of the liquid fuel to the solid fuel is self-regulated. Other embodiments of the gas-generating apparatus are also disclosed.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: March 1, 2011
    Assignee: Societe Bic
    Inventors: Andrew J. Curello, Floyd Fairbanks, Constance R. Stepan, Anthony Sgroi, Jr., Michael Curello
  • Publication number: 20110040128
    Abstract: Production of a ketone or aldehyde prepared by condensation is optimized by dehydration and hydrogenation of a starting acetone/ketone or aldehyde in a reaction zone and wherein water is partially eliminated from such reaction product by at least one membrane pervaporation module, the pervaporation module being fed tangentially and situated laterally to the reaction zone and operating in a loop, and wherein a fraction of reaction product exiting the reaction zone is thus partially dehydrated and recycling such dehydrated concentrate to the reaction zone.
    Type: Application
    Filed: April 22, 2009
    Publication date: February 17, 2011
    Inventors: Roberto Nasser, Dalva Janine Rita, Joël Schwartz
  • Patent number: 7887777
    Abstract: Hydrogen sulfide H2S is prepared from a crude gas stream containing H2S and polysulfanes (H2Sx). The crude gas stream is passed at temperatures of from 114 to 165° C. through catalytically active material present in a vessel, and sulfur is collected in the bottom of the vessel and recycled to the preparation of H2S. This process may be accomplished in an apparatus including a reactor for reacting sulfur and hydrogen, a cooler for receiving and cooling an H2S-containing crude gas stream passed out of the reactor to between 114 to 165° C., a vessel coupled to the cooler, the vessel including catalytically active material and a bottom for collecting sulfur obtained from the crude gas stream, and a line which is connected to the bottom of the vessel and opens into the cooler or into the reactor, for recycling sulfur.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: February 15, 2011
    Assignee: BASF SE
    Inventors: Andreas Wölfert, Herald Jachow, Heinz Drieβ
  • Patent number: 7884250
    Abstract: Use of a high shear mechanical device incorporated into a process for the production of chloral as a reactor device is capable of decreasing mass transfer limitations, thereby enhancing the chloral production process. A system for the production of chloral from acetaldehyde and chlorine, the system comprising a reactor and an external high shear device the outlet of which is fluidly connected to the inlet of the reactor; the high shear device capable of providing a dispersion of chlorine gas bubbles within a liquid, the bubbles having an average bubble diameter of less than about 100 ?m.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: February 8, 2011
    Assignee: H R D Corporation
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory G. Borsinger, Aziz Hassan
  • Patent number: 7883873
    Abstract: The present invention provides a sugar chain synthesizer capable of continuously reacting sugar chains when a plurality of sugar chains are successively reacted. The sugar chain synthesizer of the present invention includes a plurality of vessels containing respective sugar nucleotide solutions, a plurality of vessels containing respective glycosyltransferases, and a reactor containing a primer that is a water-soluble polymer, into which the above described sugar nucleotide solution and glycosyltransferase are introduced. In the present invention, components in a reaction solution obtained in the reactor are separated through an ultrafiltration column, and a reaction product is then returned to the above described reactor, so as to continuously synthesize sugar chains. Although it is a complicated synthesis of sugar chains, it becomes possible to carry out such synthesis continuously and automatically.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: February 8, 2011
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Masanori Takaki, Kuriko Yamada, Kisaburo Deguchi, Hiroaki Nakagawa, Shinichiro Nishimura
  • Patent number: 7879297
    Abstract: A method of operating a carbon-to-liquids system is provided. The method includes receiving a flow of syngas at the carbon-to-liquids system, shifting the syngas to facilitate increasing a hydrogen to carbon monoxide ratio (H2/CO) of the syngas, adding additional hydrogen to the shifted syngas to increase the H2/CO ratio, reacting the hydrogen/shifted syngas mixture with a catalyst in a vessel, extracting hydrogen from the syngas mixture, recycling the hydrogen to facilitate increasing the H2/CO ratio, and recycling naphta to act as solvent for wax extraction, and to facilitate catalyst recovery.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: February 1, 2011
    Assignee: General Electric Company
    Inventors: Paul Steven Wallace, Arnaldo Frydman
  • Patent number: 7871577
    Abstract: Higher molecular weight hydrocarbon compounds or oxygenates are produced from a gas comprising methane in a process comprising the steps of generating synthesis gas (“syngas”) comprising carbon monoxide and hydrogen by reaction of a gas comprising methane with steam and/or an oxidant gas comprising oxygen, producing higher molecular weight hydrocarbon compounds or oxygenates in a syngas conversion process, removing offgas comprising unreacted hydrogen and unreacted carbon monoxide from said syngas conversion process and separating cryogenically unreacted hydrogen from said offgas or from a gas derived therefrom to produce separated hydrogen product that is substantially free of unreacted carbon monoxide and a first cryogenic liquid comprising unreacted carbon monoxide. The unreacted hydrogen is preferably separated from the offgas in a liquid methane wash column.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: January 18, 2011
    Assignee: GTLpetrol LLC
    Inventors: Rodney Allam, Andrew Weaver, Vincent White, David B. Byard
  • Patent number: 7862783
    Abstract: A separation system for a methyl acetate hydrolysis is provided. The separation system comprises a reactive distillation system, a reflux system, a first separation system and a second separation. The reactive distillation system allows the hydrolysis of a methyl acetate solution to generate a first mixture and a second mixture. The reflux system is packed with a heterogeneous catalyst and coupled to the reactive distillation system, which refluxes the first mixture to the reactive distillation system. The first separation system is coupled to the reactive distillation system, which directs the second mixture thereinto so as to isolate an acetic acid and a third mixture therefrom. The second separation system is coupled to the first separation system, which directs the third mixture thereintio so as to separate a methanol therefrom. The methyl acetate feeding system is coupled to, one of the reactive distillation system and the reflux system, which feeds the methyl acetate solution thereinto.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: January 4, 2011
    Assignee: National Taiwan University
    Inventors: Hsiao-Ping Huang, Cheng-Ching Yu, Ming-Jer Lee, Yu-De Lin, Jian-Kai Cheng
  • Publication number: 20100329943
    Abstract: An apparatus is provided for digesting samples. The apparatus includes a vessel, a closure, and a fluid transporting system. The vessel has a digestion chamber therein that contains a sample holder, e.g., with a plurality of weights, the holder being accessible through a vessel opening. Typically, a vessel flange circumscribes the chamber at the chamber's opening, and the closure has a closure flange that may interface with the vessel flange to form a fluid-tight seal against a digestion pressure and temperature within the chamber. The fluid-transporting system may direct digestion fluid out of the digestion chamber through a submerged outlet port and back into the digestion chamber through an inlet port that traverses through the closure or the vessel flange. Such a fluid transporting system may be set up to allow the sample holder have a high volumetric capacity, e.g., at least 75% of the chamber.
    Type: Application
    Filed: September 1, 2010
    Publication date: December 30, 2010
    Inventor: Andrew KALLMES
  • Patent number: 7850926
    Abstract: A process for the discontinuous production of granules from polycondensation polymers by precondensation of an oligomer at 5 to 400 mbar and subsequent polycondensation in a stirring reactor and subsequent granulation. In the vicinity of the outlet port, the density of the entraining surfaces lies between 1 and 8 m2 per m3 reactor space and constantly increases with increasing distance from the discharge region. Inside the reactor, there is a viscosity gradient between the region most remote from the discharge port and the zone of the discharge port. The thermal decomposition of the polymer melt flowing out of the reactor is compensated during granulation. The stirring reactor with horizontal longitudinal axis approximately has the shape of a single or double truncated cone. The reactor has rotatable, vertical product entraining surfaces and stationary scrapers between the same.
    Type: Grant
    Filed: January 8, 2001
    Date of Patent: December 14, 2010
    Assignee: Lurgi Zimmer GmbH
    Inventors: Fritz Wilhelm, Ferdinand Finkeldei
  • Patent number: 7842253
    Abstract: A system for increasing the isobutane to olefin ratio in an alkylation process/system is disclosed. The system includes provisions for charging a portion of the settler effluent as a feed to at least one reaction zone downflow from the first reaction zone of a multi-zone alkylation reactor along with a portion of the olefin feed to the multi-zone alkylation reactor.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: November 30, 2010
    Assignee: UOP LLC
    Inventors: Robert M. Gray, Keith W. Hovis
  • Patent number: 7842262
    Abstract: A reactor in which a multi-phase mixture, including gas and a catalyst slurry or liquid, is to be conducted. The reactor includes a reaction chamber having a substantially unencumbered center portion through which the multi-phase mixture is conducted upwardly. A downcomer arrangement is disposed laterally outwardly of the center portion and adjacent to an inner surface of the reaction chamber. An external pump communicates with a lower portion of the reaction chamber for circulating components of the mixture downward from an upper end of the downcomer arrangement to a lower end thereof. A collection chamber is disposed below the reaction chamber into which the components exiting the downcomer arrangement are introduced and where the gas is separated from the remainder of the components. The separated gas can be reintroduced into the reaction chamber.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: November 30, 2010
    Assignee: Chevron U.S.A. Inc.
    Inventor: Abdenour Kemoun
  • Patent number: 7833509
    Abstract: The invention relates to a process and to an apparatus for preparing hydrogen sulfide H2S by converting a reactant mixture which comprises gaseous sulfur and hydrogen over a solid catalyst. The reactant mixture is converted at a pressure of from 0.5 to 10 bar absolute, a temperature of from 300 to 450° C. and a sulfur excess in a reactor (1). The sulfur excess corresponds to a ratio of excess sulfur to H2S prepared of from 0.2 to 3 kg of sulfur per kg of H2S prepared.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: November 16, 2010
    Assignee: BASF SE
    Inventors: Andreas Wölfert, Herald Jachow, Heinz Drieβ
  • Publication number: 20100247426
    Abstract: Systems, devices, and methods combine reactant materials and aqueous solutions to generate hydrogen. The reactant materials can sodium silicide or sodium silica gel. The hydrogen generation devices are used in fuels cells and other industrial applications. One system combines cooling, pumping, water storage, and other devices to sense and control reactions between reactant materials and aqueous solutions to generate hydrogen. Multiple inlets of varied placement geometries deliver aqueous solution to the reaction. The reactant materials and aqueous solution are churned to control the state of the reaction. The aqueous solution can be recycled and returned to the reaction. One system operates over a range of temperatures and pressures and includes a hydrogen separator, a heat removal mechanism, and state of reaction control devices. The systems, devices, and methods of generating hydrogen provide thermally stable solids, near-instant reaction with the aqueous solutions, and a non-toxic liquid by-product.
    Type: Application
    Filed: March 30, 2010
    Publication date: September 30, 2010
    Applicant: SiGNa Chemistry, Inc.
    Inventors: Andrew P. Wallace, John M. Melack, Michael Lefenfeld
  • Patent number: 7803332
    Abstract: The invention is directed to a reactor system comprising at least one reactor wherein makeup water for said system is preheated by water/steam exiting said reactor. In a preferred embodiment the system comprises plural reactors and the invention provides for each reactor to independently achieve isothermal operating conditions.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: September 28, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stephen Harold Brown, Paul Hamilton, Keith Holroyd Kuechler
  • Patent number: 7785549
    Abstract: A recycling system for hydroxylamine formation and oximation is proposed. The recycling system includes a hydroxylamine formation zone, an oximation zone, a purification zone, and an adjusting zone having a nitrate absorption tower. An inorganic process solution, used by the recycling system, partially enters the nitrate absorption tower supplementing nitrate, followed by mixing with the residual inorganic process solution, thereby reducing the loss rate of hydroxylamine in the inorganic process solution due to degradation. In addition, the organic impurities with high boiling point in the inorganic process solution can be effectively removed in the purification zone. As a result, the reduced activity or selectivity of the catalyst for hydroxylamine formation, caused by the toxic effects of these organic impurities on the catalyst, can be avoided, and hence, a high concentration of hydroxylamine can be obtained.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: August 31, 2010
    Assignee: China Petrochemical Development Corporation
    Inventors: Jih-Dar Hwang, Hsiu-Li Cheng, Shou-Li Luo
  • Patent number: 7776289
    Abstract: A method of producing decabromodiphenyl alkanes includes the steps of charging a reaction vessel with bromine and a bromination catalyst and introducing a diphenyl alkane into the vessel at a location above the level of the charge bromine and catalyst. A dip tube apparatus for introducing the diphenyl alkane includes an inner tube and an outer tube, each of which are disposed above the surface of the bromine reaction vessel. The inner tube is fitted with a plug having an opening. Diphenyl alkane flows through the inner tube, out the opening in the plug, and into the reactor. The outer tube is disposed around and along the inner tube. Reaction mass from the vessel is recirculated from the vessel, through the outer tube and back to the vessel so as to form a curtain of reaction mass around the stream of diphenyl alkane being simultaneously fed into the reaction vessel.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: August 17, 2010
    Assignee: Chemtura Corporation
    Inventors: Stephen B Falloon, Samuel U Mulligan, Donavon M McElveen, Ray W Atwell
  • Publication number: 20100185018
    Abstract: The present invention relates to a method for preparing aldehydes by reacting olefins with a synthesis gas including carbon monoxide and hydrogen, and to an apparatus therefore. More particularly, the present invention relates to a method for preparing aldehydes, characterized by spraying and supplying olefins, synthesis gas including carbon monoxide and hydrogen, and a catalyst composition into an oxo reactor through a nozzle, and to an apparatus therefore. According to the present invention, the hydroformylation efficiency can be improved, thereby obtaining desirable aldehydes with a high yield.
    Type: Application
    Filed: May 29, 2008
    Publication date: July 22, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Moo-Ho Hong, Dong-Hyun Ko, Sang-Oeb Na, Sung-Shik Eom, Sang-Gi Lee, O-Hark Kwon, Dae-Chul Kim, Jae-Hui Choi
  • Publication number: 20100181537
    Abstract: The current invention discloses a novel process and system to improve the quality of the slag product from a gasification process, thereby producing low-carbon marketable aggregate product. The inventive processes and systems employ a hindered-bed settler in conjunction with optional disengager and de-watering devices. A slag slurry stream from a gasification process is de-watered and the solids content is increased from less than 5% to greater than 30% via the de-waterer before being conveyed to a hindered-bed settler, wherein the carbon content is reduced from as much as 70% to less than 5%. Particles with a high carbon content are conveyed to a gravity settler, whereby they are concentrated and then recycled to the gasification reactor.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 22, 2010
    Applicant: CONOCOPHILLIPS COMPANY
    Inventors: Albert C. TSANG, Max W. THOMPSON, Rick Quay HONAKER
  • Patent number: 7754162
    Abstract: A process for hydroprocessing a hydrocarbon feedstock includes the steps of providing a hydrocarbon feed having an initial characteristic; providing a first hydrogen-containing gas; feeding the hydrocarbon feed and the first hydrogen-containing gas cocurrently to a first hydroprocessing zone so as to provide a first hydrocarbon product; providing a plurality of additional hydroprocessing zones including a final zone and an upstream zone; feeding the first hydrocarbon product cocurrently with a recycled gas to the upstream zone so as to provide an intermediate hydrocarbon product; and feeding the intermediate hydrocarbon product cocurrently with a second hydrogen-containing gas to the final zone so as to provide a final hydrocarbon product having a final characteristic which is improved as compared to the initial characteristic.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: July 13, 2010
    Assignee: Intevep, S.A.
    Inventor: Carlos Gustavo Dassori
  • Patent number: 7750170
    Abstract: The invention provides a process for the mixing of an oxidant having explosive potential with a hydrocarbon material, which comprises conveying a first stream comprising the hydrocarbon material and a second stream comprising the oxidant into a microchannel apparatus, allowing mixing to occur, and withdrawing the mixture. The process is useful for the preparation of ethylene oxide.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: July 6, 2010
    Assignee: Shell Oil Company
    Inventors: Jeroen Willem Bolk, Alouisius Nicolaas Renée Bos
  • Patent number: 7749468
    Abstract: An apparatus is provided for carrying out a cavitation induced reaction comprising a reaction chamber for a liquid reaction medium, means for producing cavitation in the liquid reaction medium, at least one reactant inlet to the reaction chamber, an inert gas inlet conduit with a sparger for injecting a flowing stream of dry inert gas into the reaction chamber, a venting outlet for removal of a stream of the inert gas from the reaction chamber, and a recirculation conduit for re-circulating a stream of the inert gas from the venting outlet to the inert gas inlet conduit.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: July 6, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventor: Ion C. Halalay
  • Publication number: 20100166620
    Abstract: A system and process for continuous production of fatty acid methyl esters (FAME) from the fatty acid triglycerides of waste oil via transesterification in the presence of a reusable sugar-based catalyst. The system and process incorporates re-cycling and re-use of waste bi-product streams to result in a near-zero emissions, with a 97% product yield mix consisting of almost pure biodiesel and a very small percentage of impurities including glycerol.
    Type: Application
    Filed: November 18, 2009
    Publication date: July 1, 2010
    Inventors: Stephanie Marie Gurski, Anam Kazim, Hoi Ki Cheung, Amani Obeid
  • Publication number: 20100135891
    Abstract: The present invention relates to a process of preparing precipitated calcium carbonate (PCC) in a low energy intensity reactor in such a manner that the amount of solids in the PCC product can be raised to 35% or more without performing a dewatering step. The process comprises performing in parallel and in two or more separate reaction vessel the steps of contacting calcium hydroxide with a gas comprising carbon dioxide to allow formation of calcium carbonate, and adding calcium oxide, lime or dry calcium hydroxide or a combination of any of the three to a part of the resulting mixture of calcium hydroxide and calcium carbonate. The invention further provides a specialized reactor system as well as the use of this reactor system in the manufacture of PCC.
    Type: Application
    Filed: April 17, 2008
    Publication date: June 3, 2010
    Applicant: OMYA DEVELOPMENT AG
    Inventors: Kaare Hvid Hansen, Mogens Pedersen
  • Patent number: 7722771
    Abstract: The present invention provides methods and apparatuses for the continuous processing and solids handling in near-critical and supercritical fluids. The present invention also allows for treatment of the starting material with the near-critical or supercritical fluid. The remaining raffinate is then continuously transferred and may be collected in a barrier fluid.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: May 25, 2010
    Assignee: Thar Technologies, Inc.
    Inventors: Lalit Chordia, Jose L. Martinez, Bhishmakumar Desai, Andrew Kegler
  • Patent number: 7713499
    Abstract: Apparatuses and methods for preparing sol-gel solutions are provided. Specifically, apparatuses include a vessel optionally containing a stirrer; a pump; a fluidized bed reaction column; and multiple fluid lines. The multiple fluid lines connect the vessel and the pump in a first circulation loop and connect the vessel, the pump and the fluidized bed reaction column in a second circulation loop. Processes for preparing sol-gel solutions using such apparatuses are also disclosed.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: May 11, 2010
    Assignee: Xerox Corporation
    Inventors: Timothy P. Bender, David T. Borbely, Frank Ping-Hay Lee, Nan-Xing Hu
  • Patent number: 7713500
    Abstract: A process for the oxidative leaching of sulphide mineral species, the method characterized by the method steps of: leaching a slurry containing the mineral species in one or more reaction vessels; circulating a stream of leach liquor to a flash cooler; flashing the liquor in the flash cooler at a pressure less than atmospheric pressure so as to dissipate heat; and recirculating the liquor to the or each reaction vessel.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: May 11, 2010
    Assignee: Western Minerals Technology Pty Ltd.
    Inventor: Gary Donald Johnson
  • Publication number: 20100111786
    Abstract: Use of a high shear mechanical device in a process for production of starch by hydration and disruption of corn kernel particles in the presence of sulfur dioxide or bisulfite ions makes possible a decrease in mass transfer limitations, thereby enhancing starch production. A system for production of starch is also provided in which a high shear mixing device is configured to receive an aqueous corn slurry from a pump that is disposed between the reactor and a gaseous sulfur dioxide inlet of the high shear mixing device. The high shear mixing device is also configured to generate a fine dispersion of sulfur dioxide bubbles and small corn particles in the slurry. A reactor is configured to receive the output from the high shear mixing device and to provide for starch production.
    Type: Application
    Filed: July 31, 2009
    Publication date: May 6, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
  • Publication number: 20100095581
    Abstract: A biodiesel reactor system includes a reactor recirculation line running from the reactor bottom to a headspace in the top of the reactor. A reactor recirculation pump is in the reactor recirculation line, and a reactor nozzle is positioned in at a reactor recirculation line discharge in the headspace. The reactor nozzle provides back pressure on the reactor recirculation pump to cause a controlled cavitation. The controlled cavitation provides mixing for the various reactants to produce biodiesel fuel.
    Type: Application
    Filed: October 22, 2009
    Publication date: April 22, 2010
    Applicant: Biodiesel Logic, Inc.
    Inventor: John West
  • Publication number: 20100092354
    Abstract: Use of a high shear mechanical device incorporated into a process for the production of chloral as a reactor device is capable of decreasing mass transfer limitations, thereby enhancing the chloral production process. A system for the production of chloral from acetaldehyde and chlorine, the system comprising a reactor and an external high shear device the outlet of which is fluidly connected to the inlet of the reactor; the high shear device capable of providing a dispersion of chlorine gas bubbles within a liquid, the bubbles having an average bubble diameter of less than about 100 ?m.
    Type: Application
    Filed: December 10, 2009
    Publication date: April 15, 2010
    Applicant: H R D CORPORATION
    Inventors: Abbas Hassan, Ebrahim Bagherzadeh, Rayford G. Anthony, Gregory Borsinger, Aziz Hassan
  • Publication number: 20100092382
    Abstract: A gas generator includes a high pressure gas-generation system that is capable of generating a product gas stream at a non-ambient, elevated nominal pressure. A thermal swing absorber has a first configuration and a second configuration relative to being connected with the product gas stream. In the first configuration, the thermal swing absorber is connected with the high pressure gas-generation system to receive the product gas stream and remove a constituent gas from the stream. In the second configuration, the thermal swing absorber is disconnected from the product gas stream and releases the constituent gas at a pressure that is substantially equal to the elevated nominal pressure. In the second configuration, the thermal swing absorber is an input source to provide the released constituent gas into the high pressure gas-generation system, which permits more efficient use of materials within the system.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 15, 2010
    Inventors: Albert E. Stewart, Jeffrey A. Mays