Patents by Inventor Lawrence A. Lacijan
Lawrence A. Lacijan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8702972Abstract: A process is disclosed for the separation of solids from gases in a mixture which is most particularly applicable to an FCC apparatus. The mixture of solids and gases are passed through a conduit and exit through a swirl arm that imparts a swirl motion having a first annular direction to centripetally separate the heavier solids from the lighter gases. The mixture then enters a gas recovery conduit in which at least one plate radially extending from an inner wall impedes rotational motion of the mixture. The mixture enters cyclones at the other end of the gas recovery conduit without substantial swirling motion.Type: GrantFiled: August 28, 2009Date of Patent: April 22, 2014Assignee: UOP LLCInventors: Lawrence A. Lacijan, Hadjira Iddir
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Patent number: 8173567Abstract: 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: GrantFiled: December 16, 2008Date of Patent: May 8, 2012Assignee: UOP LLCInventors: Paolo Palmas, Lawrence A. Lacijan, Sujay R. Krishnamurthy, Mohammad-Reza Mostofi-Ashtiani, Paul S. Nishimura, Lisa M. Wolschlag
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Patent number: 7947230Abstract: 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: GrantFiled: December 16, 2008Date of Patent: May 24, 2011Assignee: UOP LLCInventors: Paolo Palmas, Lawrence A. Lacijan, Sujay R. Krishnamurthy, Mohammad-Reza Mostofi-Ashtiani, Paul S. Nishimura, Lisa M. Wolschlag
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Publication number: 20100152020Abstract: 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: ApplicationFiled: December 16, 2008Publication date: June 17, 2010Inventors: Paolo Palmas, Lawrence A. Lacijan, Sujay R. Krishnamurthy, Mohammad-Reza Mostofi-Ashtiani, Paul S. Nishimura, Lisa M. Wolschlag
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Publication number: 20100150788Abstract: 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: ApplicationFiled: December 16, 2008Publication date: June 17, 2010Inventors: Paolo Palmas, Lawrence A. Lacijan, Sujay R. Krishnamurthy, Mohammad-Reza Mostofi-Ashtiani, Paul S. Nishimura, Lisa M. Wolschlag
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Publication number: 20090318744Abstract: A process is disclosed for the separation of solids from gases in a mixture which is most particularly applicable to an FCC apparatus. The mixture of solids and gases are passed through a conduit and exit through a swirl arm that imparts a swirl motion having a first annular direction to centripetally separate the heavier solids from the lighter gases. The mixture then enters a gas recovery conduit in which at least one plate radially extending from an inner wall impedes rotational motion of the mixture. The mixture enters cyclones at the other end of the gas recovery conduit without substantial swirling motion.Type: ApplicationFiled: August 28, 2009Publication date: December 24, 2009Applicant: UOP LLCInventors: Lawrence A. Lacijan, Hadjira Iddir
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Patent number: 7601305Abstract: An apparatus and process is disclosed for the separation of solids from gases in a mixture which is most particularly applicable to an FCC apparatus. The mixture of solids and gases are passed through a conduit and exit through a swirl arm that imparts a swirl motion having a first annular direction to centripetally separate the heavier solids from the lighter gases. The mixture then enters a gas recovery conduit in which at least one plate radially extending from an inner wall impedes rotational motion of the mixture. The mixture enters cyclones at the other end of the gas recovery conduit without substantial swirling motion.Type: GrantFiled: February 2, 2006Date of Patent: October 13, 2009Assignee: UOP LLCInventors: Lawrence A. Lacijan, Hadjira Iddir
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Patent number: 7138558Abstract: The invention is a process and the corresponding apparatus for producing light olefins from oxygenates in an OTO reactor comprising sending an oxygenate feed stream through a feed stream distributor into an OTO reactor, contacting the oxygenates with a catalyst to produce a mixture comprising light olefins, diolefins, unreacted oxygenate and other by-products; separating the unreacted oxygenate and diolefins from said light olefins and said by-products; and returning the unreacted oxygenate and diolefins to the OTO reactor. The unreacted oxygenate and diolefins are sent through at least one feed nozzle into said reactor at a point separate from the oxygenate feed stream.Type: GrantFiled: September 27, 2005Date of Patent: November 21, 2006Assignee: UOP LLCInventors: Lawrence A. Lacijan, Daniel N. Myers, Paolo Palmas
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Patent number: 7094380Abstract: Disclosed is an apparatus for injecting a plurality of uniform jets into an extended dispersion of moving catalyst particles within a reactor vessel. The apparatus comprises a plurality of outer conduits each for carrying contacting fluid and being fixed to a respective opening in a first tube sheet. A plurality of outlet nozzles are each fixed to a respective opening in a second tube sheet which is fixed to the first tube sheet. Feed in the outer conduits are delivered to the outlet nozzles for distribution into the vessel. All of the outlet nozzles can be easily replaced by breaking the fixation between the two tube sheets and securing a new second tube sheet with outlet nozzles to the first tube sheet.Type: GrantFiled: March 7, 2003Date of Patent: August 22, 2006Assignee: UOP LLCInventors: Paolo Palmas, Lawrence A. Lacijan, Adam S. Kasle
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Publication number: 20060094916Abstract: The invention is a process and the corresponding apparatus for producing light olefins from oxygenates in an OTO reactor comprising sending an oxygenate feed stream through a feed stream distributor into an OTO reactor, contacting the oxygenates with a catalyst to produce a mixture comprising light olefins, diolefins, unreacted oxygenate and other by-products; separating the unreacted oxygenate and diolefins from said light olefins and said by-products; and returning the unreacted oxygenate and diolefins to the OTO reactor. The unreacted oxygenate and diolefins are sent through at least one feed nozzle into said reactor at a point separate from the oxygenate feed stream.Type: ApplicationFiled: September 27, 2005Publication date: May 4, 2006Inventors: Lawrence Lacijan, Daniel Myers, Paolo Palmas
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Patent number: 6979360Abstract: In a cyclone separator used for separating solids from gases, we discovered placing at least one opening in a lateral surface of a gas outlet conduit on a side facing away from an inlet to the cyclone separator prevents coke deposits from forming thereon. A plurality of openings may be placed on the side of the lateral surface of the gas outlet conduit facing away from the inlet. In an embodiment, no openings are placed on a side of the lateral surface facing the inlet to the cyclone separator.Type: GrantFiled: May 13, 2003Date of Patent: December 27, 2005Assignee: UOP LLCInventors: Ismail B. Cetinkaya, Keith A. Couch, Lawrence A. Lacijan
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Patent number: 6110356Abstract: The invention improves a system and apparatus for the recovery of fine solid particles entering the slurry system of a fluidized catalytic contacting process by returning a portion of the recovered solids from the main separator directly back to the reactor stripper. The invention recovers fine particulate material from an FCC main column and returns the particulate material to an FCC stripper to reduce the amount of fine material that continues to recycle through the FCC reactor and product separator. By returning fine particulate material from the FCC product separation zone directly to a low velocity area of the stripping section, the invention breaks the reactor--main column recycle loop that concentrates the fines. Fines entering the reactor stripper will not be carried back into the cyclones for unwanted return to the main column. By the recycling of fines to the stripper via this invention, the fines concentration in the slurry system can decrease by up to 300%.Type: GrantFiled: May 6, 1998Date of Patent: August 29, 2000Assignee: UOP LLCInventors: Brian W. Hedrick, Mark Schnaith, Lawrence A Lacijan