Patents by Inventor Ji Xian LOH

Ji Xian LOH 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).

  • Membrane and pressure swing adsorption hybrid INRU process
    Patent number: 11058987
    Abstract: A process for component separation in a polymer production system, comprising: separating a polymerization product stream into a gas stream and a polymer stream; contacting the polymer stream with a purge gas to yield a purged polymer stream and a spent purge gas stream; introducing the spent purge gas stream to a compressor to produce a compressed gas stream; introducing the compressed gas stream to a first separation unit to produce a first hydrocarbon stream and a membrane unit feed stream; introducing the membrane unit feed stream to a membrane unit to produce a first recovered purge gas stream and a retentate stream; introducing the retentate stream to a second separation unit to produce a second hydrocarbon stream and a PSA unit feed stream; and introducing the PSA unit feed stream to a PSA unit to produce a second recovered purge gas stream and a tail gas stream.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: July 13, 2021
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Lei Ji, Joseph A. Curren, Ji Xian Loh
  • Membrane and Pressure Swing Adsorption Hybrid INRU Process
    Publication number: 20200009495
    Abstract: A process for component separation in a polymer production system, comprising: separating a polymerization product stream into a gas stream and a polymer stream; contacting the polymer stream with a purge gas to yield a purged polymer stream and a spent purge gas stream; introducing the spent purge gas stream to a compressor to produce a compressed gas stream; introducing the compressed gas stream to a first separation unit to produce a first hydrocarbon stream and a membrane unit feed stream; introducing the membrane unit feed stream to a membrane unit to produce a first recovered purge gas stream and a retentate stream; introducing the retentate stream to a second separation unit to produce a second hydrocarbon stream and a PSA unit feed stream; and introducing the PSA unit feed stream to a PSA unit to produce a second recovered purge gas stream and a tail gas stream.
    Type: Application
    Filed: September 16, 2019
    Publication date: January 9, 2020
    Inventors: Lei JI, Joseph A. CURREN, Ji Xian LOH
  • Membrane and pressure swing adsorption hybrid INRU process
    Patent number: 10449480
    Abstract: A process for component separation in a polymer production system, comprising: separating a polymerization product stream into a gas stream and a polymer stream; contacting the polymer stream with a purge gas to yield a purged polymer stream and a spent purge gas stream; introducing the spent purge gas stream to a compressor to produce a compressed gas stream; introducing the compressed gas stream to a first separation unit to produce a first hydrocarbon stream and a membrane unit feed stream; introducing the membrane unit feed stream to a membrane unit to produce a first recovered purge gas stream and a retentate stream; introducing the retentate stream to a second separation unit to produce a second hydrocarbon stream and a PSA unit feed stream; and introducing the PSA unit feed stream to a PSA unit to produce a second recovered purge gas stream and a tail gas stream.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: October 22, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Lei Ji, Joseph A. Curren, Ji Xian Loh
  • Side rectifier column for olefin and diluent recovery
    Patent number: 10173951
    Abstract: Processes and systems for olefin and diluent recovery utilizing one or more side columns, including a side rectifier column and/or a side degassing column, in combination with a heavies column.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: January 8, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Joseph A. Curren, Ralph W. Romig, Ji Xian Loh, Timothy O. Odi
  • Membrane and Pressure Swing Adsorption Hybrid INRU Process
    Publication number: 20180169563
    Abstract: A process for component separation in a polymer production system, comprising: separating a polymerization product stream into a gas stream and a polymer stream; contacting the polymer stream with a purge gas to yield a purged polymer stream and a spent purge gas stream; introducing the spent purge gas stream to a compressor to produce a compressed gas stream; introducing the compressed gas stream to a first separation unit to produce a first hydrocarbon stream and a membrane unit feed stream; introducing the membrane unit feed stream to a membrane unit to produce a first recovered purge gas stream and a retentate stream; introducing the retentate stream to a second separation unit to produce a second hydrocarbon stream and a PSA unit feed stream; and introducing the PSA unit feed stream to a PSA unit to produce a second recovered purge gas stream and a tail gas stream.
    Type: Application
    Filed: November 28, 2017
    Publication date: June 21, 2018
    Inventors: Lei JI, Joseph A. CURREN, Ji Xian LOH
  • Side Rectifier Column for Olefin and Diluent Recovery
    Publication number: 20180072639
    Abstract: Processes and systems for olefin and diluent recovery utilizing one or more side columns, including a side rectifier column and/or a side degassing column, in combination with a heavies column.
    Type: Application
    Filed: September 13, 2016
    Publication date: March 15, 2018
    Inventors: Joseph A. CURREN, Ralph W. ROMIG, Ji Xian LOH, Timothy O. ODI