Patents Assigned to Lummus Technology Inc.
  • Patent number: 10814301
    Abstract: Producing C5 olefins from steam cracker C5 reeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a traction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: October 27, 2020
    Assignee: Lummus Technology Inc.
    Inventors: Yongqiang Xu, Peter Loezos, Willibrord A. Groten, Romain Lemoine
  • Patent number: 10815167
    Abstract: A process for the double-bond isomerization of olefins is disclosed. The process may include contacting a hydrocarbon stream including olefins with a ?-alumina-titania isomerization catalyst to convert at least a portion of the olefin to its positional isomer. The ?-alumina-titanic isomerization catalysts disclosed herein may also have the activity to convert alcohol into additional olefins, while having increased resistance to oxygenate poisons.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: October 27, 2020
    Assignee: Lummus Technology Inc.
    Inventors: Bala Ramachandran, Sukwon Choi, Robert J. Gartside
  • Publication number: 20200291307
    Abstract: Apparatus and processes herein provide for converting hydrocarbon feeds to light olefins and other hydrocarbons. The processes and apparatus include, in some embodiments, feeding a hydrocarbon, a first catalyst and a second catalyst to a reactor, wherein the first catalyst has a smaller average particle size and is less dense than the second catalyst. A first portion of the second catalyst may be recovered as a bottoms product from the reactor, and a cracked hydrocarbon effluent, a second portion of the second catalyst, and the first catalyst may be recovered as an overhead product from the reactor. The second portion of the second catalyst may be separated from the overhead product, providing a first stream comprising the first catalyst and the hydrocarbon effluent and a second stream comprising the separated second catalyst, allowing return of the separated second catalyst in the second stream to the reactor.
    Type: Application
    Filed: June 1, 2020
    Publication date: September 17, 2020
    Applicant: Lummus Technology Inc.
    Inventors: Liang Chen, Peter Loezos, Rama Rao Marri, Bryan Tomsula, Jon A. Hood, Hardik Singh, Michael Dorsey, Justin Breckenridge
  • Patent number: 10696907
    Abstract: Apparatus and processes herein provide for converting hydrocarbon feeds to light olefins and other hydrocarbons. The processes and apparatus include, in some embodiments, feeding a hydrocarbon, a first catalyst and a second catalyst to a reactor, wherein the first catalyst has a smaller average particle size and is less dense than the second catalyst. A first portion of the second catalyst may be recovered as a bottoms product from the reactor, and a cracked hydrocarbon effluent, a second portion of the second catalyst, and the first catalyst may be recovered as an overhead product from the reactor. The second portion of the second catalyst may be separated from the overhead product, providing a first stream comprising the first catalyst and the hydrocarbon effluent and a second stream comprising the separated second catalyst, allowing return of the separated second catalyst in the second stream to the reactor.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: June 30, 2020
    Assignee: Lummus Technology Inc.
    Inventors: Liang Chen, Peter Loezos, Rama Rao Marri, Bryan Tomsula, Jon A. Hood, Hardik Singh, Michael Dorsey, Justin Breckenridge
  • Patent number: 10676411
    Abstract: Processes for the production of olefins are disclosed, which may include: contacting a hydrocarbon mixture comprising linear butenes with an isomerization catalyst to form an isomerization product comprising 2-butenes and 1-butenes; contacting the isomerization product with a first metathesis catalyst to form a first metathesis product comprising 2-pentene and propylene, as well as any unreacted C4 olefins, and byproducts ethylene and 3-hexene; and fractionating the first metathesis product to form a C3-fraction and a C5 fraction comprising 2-pentene. The 2-pentene may then be advantageously used to produce high purity 1-butene, 3-hexene, 1-hexene, propylene, or other desired products.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: June 9, 2020
    Assignee: Lummus Technology Inc.
    Inventors: Sukwon Choi, Bala Ramachandran
  • Publication number: 20200009523
    Abstract: Apparatus and processes herein provide for converting hydrocarbon feeds to light olefins and other hydrocarbons. The processes and apparatus include, in some embodiments, feeding a hydrocarbon, a first catalyst and a second catalyst to a reactor, wherein the first catalyst has a smaller average particle size and is less dense than the second catalyst. A first portion of the second catalyst may be recovered as a bottoms product from the reactor, and a cracked hydrocarbon effluent, a second portion of the second catalyst, and the first catalyst may be recovered as an overhead product from the reactor. The second portion of the second catalyst may be separated from the overhead product, providing a first stream comprising the first catalyst and the hydrocarbon effluent and a second stream comprising the separated second catalyst, allowing return of the separated second catalyst in the second stream to the reactor.
    Type: Application
    Filed: July 15, 2019
    Publication date: January 9, 2020
    Applicant: Lummus Technology Inc.
    Inventors: Liang Chen, Peter Loezos, Rama Rao Marri, Bryan Tomsula, Jon A. Hood, Hardik Singh, Michael Dorsey, Justin Breckenridge
  • Patent number: 10527357
    Abstract: Disclosed is a shell and tube heat exchanger that includes, inter alia, an elongated cylindrical shell that defines a longitudinal axis for the heat exchanger and an internal chamber. The shell has at least one feed gas inlet and feed gas outlet formed in an outer wall for allowing a feed gas to enter and exit the internal chamber. At least one tube sheet is associated with an end of the elongated shell and a plurality of circular baffles are longitudinally spaced apart within the internal chamber of the shell for redirecting feed gas flow within the internal chamber. The heat exchanger also includes a tube bundle which has a plurality of tubes for allowing effluent gas to traverse from an inlet plenum through the internal chamber of the shell to an outlet plenum. Additionally, a shroud distributor is arranged and configured to direct feed gas flow from the feed gas inlet to the internal chamber proximate the at least one tube sheet.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: January 7, 2020
    Assignee: Lummus Technology Inc.
    Inventors: Vincenzo Marco Brignone, Richard Jibb
  • Publication number: 20190390117
    Abstract: Systems for separating a contaminant trapping additive from a cracking catalyst may include a contaminant removal vessel having one or more fluid connections for receiving contaminated cracking catalyst, contaminated contaminant trapping additive, fresh contaminant trapping additive, and a fluidizing gas. In the contaminant removal vessel, the spent catalyst may be contacted with contaminant trapping additive, which may have an average particle size and/or density greater than the cracking catalyst. A separator may be provided for separating an overhead stream from the contaminant removal vessel into a first stream comprising cracking catalyst and lifting gas and a second stream comprising contaminant trapping additive. A recycle line may be used for transferring contaminant trapping additive recovered in the second separator to the contaminant removal vessel, allowing contaminant trapping additive to accumulate in the contaminant removal vessel.
    Type: Application
    Filed: September 3, 2019
    Publication date: December 26, 2019
    Applicant: Lummus Technology Inc.
    Inventors: Liang Chen, Peter Loezos, Rama Rao Marri, Bryan Tomsula, Jon A. Hood, Hardik Singh, Michael Dorsey, Justin Breckenridge
  • Publication number: 20190338199
    Abstract: Apparatus and processes herein provide for converting hydrocarbon feeds to light olefins and other hydrocarbons. The processes and apparatus include, in some embodiments, feeding a hydrocarbon, a first catalyst and a second catalyst to a reactor, wherein the first catalyst has a smaller average particle size and is less dense than the second catalyst. A first portion of the second catalyst may be recovered as a bottoms product from the reactor, and a cracked hydrocarbon effluent, a second portion of the second catalyst, and the first catalyst may be recovered as an overhead product from the reactor. The second portion of the second catalyst may be separated from the overhead product, providing a first stream comprising the first catalyst and the hydrocarbon effluent and a second stream comprising the separated second catalyst, allowing return of the separated second catalyst in the second stream to the reactor.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Applicant: Lummus Technology Inc.
    Inventors: Liang Chen, Peter Loezos, Rama Rao Marri, Bryan Tomsula, Jon A. Hood, Hardik Singh, Michael Dorsey, Justin Breckenridge
  • Publication number: 20190338198
    Abstract: Apparatus and processes herein provide for converting hydrocarbon feeds to light olefins and other hydrocarbons. The processes and apparatus include, in some embodiments, feeding a hydrocarbon, a first catalyst and a second catalyst to a reactor, wherein the first catalyst has a smaller average particle size and is less dense than the second catalyst. A first portion of the second catalyst may be recovered as a bottoms product from the reactor, and a cracked hydrocarbon effluent, a second portion of the second catalyst, and the first catalyst may be recovered as an overhead product from the reactor. The second portion of the second catalyst may be separated from the overhead product, providing a first stream comprising the first catalyst and the hydrocarbon effluent and a second stream comprising the separated second catalyst, allowing return of the separated second catalyst in the second stream to the reactor.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Applicant: Lummus Technology Inc.
    Inventors: Liang Chen, Peter Loezos, Rama Rao Marri, Bryan Tomsula, Jon A. Hood, Hardik Singh, Michael Dorsey, Justin Breckenridge
  • Patent number: 10450514
    Abstract: Systems for separating a contaminant trapping additive from a cracking catalyst may include a contaminant removal vessel having one or more fluid connections for receiving contaminated cracking catalyst, contaminated contaminant trapping additive, fresh contaminant trapping additive, and a fluidizing gas. In the contaminant removal vessel, the spent catalyst may be contacted with contaminant trapping additive, which may have an average particle size and/or density greater than the cracking catalyst. A separator may be provided for separating an overhead stream from the contaminant removal vessel into a first stream comprising cracking catalyst and lifting gas and a second stream comprising contaminant trapping additive. A recycle line may be used for transferring contaminant trapping additive recovered in the second separator to the contaminant removal vessel, allowing contaminant trapping additive to accumulate in the contaminant removal vessel.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: October 22, 2019
    Assignee: Lummus Technology Inc.
    Inventors: Liang Chen, Peter Loezos, Rama Rao Marri, Bryan Tomsula, Jon A. Hood, Hardik Singh, Michael Dorsey, Justin Breckenridge
  • Publication number: 20190293368
    Abstract: A heat exchanger assembly including an elongated tubular heat exchanger enclosure defining an interior chamber. A tube sheet is positioned within the interior chamber of the heat exchanger enclosure separating the interior chamber into a shell side and a channel side. The interior portion is configured to removably receive a tube bundle positioned within the shell side of the interior chamber. An annular sleeve member is positioned within the channel side of the interior chamber of the heat exchanger enclosure. An annular elastic torsion member is positioned within the channel side of the interior chamber of the heat exchanger such that the sleeve member is positioned between the tube sheet and the elastic torsion member. The elastic torsion member has an inner circumference deflectable relative to its outer circumference for torsioning the elastic torsion member.
    Type: Application
    Filed: March 20, 2019
    Publication date: September 26, 2019
    Applicant: Lummus Technology Inc.
    Inventors: Richard Jibb, David Creech, Randy Eberly, Elizabeth Meacham, Henk Boekhouder, Roberto Groppi, Vincenzo Marco Brignone
  • Patent number: 10392572
    Abstract: A system for gasification of a carbonaceous material and recycling char or solids from a gasifier is disclosed. The recycling system may include a standpipe that receives a solids stream from a separator, the standpipe generating a pressure differential across a bed of accumulated char, thereby producing a bottoms stream having a greater pressure than the inlet solids stream. The recycling system may also include a holding vessel that receives the bottoms stream and a fluidized-bed distribution vessel that receives char from the holding vessel and is configured to provide a continuous and precise flow of recycled char to the gasification reactor.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: August 27, 2019
    Assignee: Lummus Technology Inc.
    Inventor: Albert C. Tsang
  • Patent number: 10385283
    Abstract: Embodiments herein relate to a process flow scheme for the processing of gas oils and especially reactive gas oils produced by thermal cracking of residua using a split flow concept. The split flow concepts disclosed allow optimization of the hydrocracking reactor severities and thereby take advantage of the different reactivities of thermally cracked gas oils versus those of virgin gas oils. This results in a lower cost facility for producing base oils as well as diesel, kerosene and gasoline fuels while achieving high conversions and high catalyst lives.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: August 20, 2019
    Assignee: Lummus Technology Inc.
    Inventors: Arun Arora, Ujjal K. Mukherjee, Wai Seung Louie, Marvin I. Greene
  • Publication number: 20190249095
    Abstract: A process for upgrading vacuum residuum and vacuum gas oil hydrocarbons is disclosed. The process may include: contacting a heavy distillate hydrocarbon fraction and hydrogen with a zeolite selective hydrocracking catalyst in a first ebullated bed hydrocracking reaction zone to convert at least a portion of the vacuum gas oil to lighter hydrocarbons. Contacting a residuum hydrocarbon fraction and hydrogen with a non-zeolite base metal hydroconversion catalyst in a second ebullated bed hydroconversion reaction zone may produce a vapor stream containing unconverted hydrogen, acid gases and volatilized hydrocarbons which may be fed along with the vacuum gas oil in the first ebullated bed hydrocracking zone.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 15, 2019
    Applicant: Lummus Technology Inc.
    Inventors: Arun Arora, Marvin I. Greene
  • Patent number: 10365038
    Abstract: Processes and systems for recovery of a dilute ethylene stream are illustrated and described. More specifically, embodiments disclosed herein relate to processes and systems for separation of a dilute ethylene stream from an offgas or other vapor streams, where the ultra-low temperature refrigeration for the desired separations is provided by the offgas itself, and only moderately-low temperature externally supplied propylene refrigerants (for example, at ?40° C. to 15° C.) are necessary.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: July 30, 2019
    Assignee: Lummus Technology Inc.
    Inventors: Kevin John Schwint, Sanjeev Ram
  • Patent number: 10351786
    Abstract: Apparatus and processes herein provide for converting hydrocarbon feeds to light olefins and other hydrocarbons. The processes and apparatus include, in some embodiments, feeding a hydrocarbon, a first catalyst and a second catalyst to a reactor, wherein the first catalyst has a smaller average particle size and is less dense than the second catalyst. A first portion of the second catalyst may be recovered as a bottoms product from the reactor, and a cracked hydrocarbon effluent, a second portion of the second catalyst, and the first catalyst may be recovered as an overhead product from the reactor. The second portion of the second catalyst may be separated from the overhead product, providing a first stream comprising the first catalyst and the hydrocarbon effluent and a second stream comprising the separated second catalyst, allowing return of the separated second catalyst in the second stream to the reactor.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: July 16, 2019
    Assignee: Lummus Technology Inc.
    Inventors: Liang Chen, Peter Loezos, Rama Rao Marri, Bryan Tomsula, Jon A. Hood, Hardik Singh, Michael Dorsey, Justin Breckenridge
  • Patent number: 10252240
    Abstract: Producing C5 olefins from steam cracker C5 feeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a fraction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: April 9, 2019
    Assignee: Lummus Technology Inc.
    Inventors: Yongqiang Xu, Peter Loezos, Willibrord A. Groten, Romain Lemoine
  • Patent number: 10232356
    Abstract: A catalyst comprising NiO, a metal mixture comprising at least one of MoO3 or WO3, a mixture comprising at least one of SiO2 and Al2O3, and P2O5. In this embodiment the metal sites on the catalyst are sulfided and the catalyst is capable of removing tar from a synthesis gas while performing methanation and water gas shift reactions at a temperature range from 300° C. to 600° C.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: March 19, 2019
    Assignee: Lummus Technology Inc.
    Inventors: Sourabh S. Pansare, Joe D. Allison, Steven E. Lusk, Albert C. Tsang
  • Patent number: 10221366
    Abstract: A process for upgrading residuum hydrocarbons and decreasing tendency of the resulting products toward asphaltenic sediment formation in downstream processes is disclosed. The process may include: contacting a residuum hydrocarbon fraction and hydrogen with a hydroconversion catalyst in a hydrocracking reaction zone to convert at least a portion of the residuum hydrocarbon fraction to lighter hydrocarbons; recovering an effluent from the hydrocracking reaction zone; contacting hydrogen and at least a portion of the effluent with a resid hydrotreating catalyst; and separating the effluent to recover two or more hydrocarbon fractions.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: March 5, 2019
    Assignee: Lummus Technology Inc.
    Inventors: Ujjal K. Mukherjee, Mario C. Baldassari