Patents by Inventor Cong-Yan Chen

Cong-Yan Chen 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).

  • MULTI-STAGE REFORMING PROCESS TO PRODUCE HIGH OCTANE GASOLINE
    Publication number: 20140076778
    Abstract: The present invention relates to a multistage reforming process to produce a high octane product. A naphtha boiling range feedstock is processed in a multi-stage reforming process, in which the process involves at least 1) a penultimate stage for reforming the naphtha feedstock to produce a penultimate effluent 2) a final stage for further reforming at least a portion of the penultimate effluent 3) a regeneration step for the final stage catalyst. The severity of the penultimate stage can be increased during final stage catalyst regeneration in order to maintain the target RON of the reformate product and avoid reactor downtime.
    Type: Application
    Filed: November 19, 2013
    Publication date: March 20, 2014
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Cong-Yan CHEN, Stephen J. MILLER, James N. ZIEMER
  • Multi-stage reforming process to produce high octane gasoline
    Patent number: 8658021
    Abstract: The present invention relates to a multistage reforming process to produce a high octane product. A naphtha boiling range feedstock is processed in a multi-stage reforming process, in which the process involves at least 1) a penultimate stage for reforming the naphtha feedstock to produce a penultimate effluent 2) a final stage for further reforming at least a portion of the penultimate effluent 3) a regeneration step for the final stage catalyst. The severity of the penultimate stage can be increased during final stage catalyst regeneration in order to maintain the target RON of the reformate product and avoid reactor downtime.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: February 25, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Stephen J. Miller, James N. Ziemer, Ann J. Liang
  • PROCESS FOR THE PRODUCTION OF PARA-XYLENE
    Publication number: 20140046106
    Abstract: A reforming process using a medium pore zeolite under conditions to facilitate the conversion of C8 paraffinic compounds to para-xylene is provided. Para-xylene is produced at greater than thermodynamic equilibrium concentrations using the process.
    Type: Application
    Filed: October 16, 2013
    Publication date: February 13, 2014
    Applicant: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Stephen J. Miller, James N. Ziemer
  • Hydroisomerization process using molecular sieve SSZ-81
    Patent number: 8546628
    Abstract: The present invention is directed to a hydroisomerization process using a new crystalline molecular sieve designated SSZ-81, which is synthesized using a structure directing agent selected from 1,5-bis(1-azonia-bicyclo[2.2.2]octane)pentane dications, 1,5-bis(1,4-diazabicyclo[2.2.2]octane)pentane dications, and mixtures thereof.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: October 1, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Stacey I. Zones
  • ISOMERIZATION OF LIGHT PARAFFINS
    Publication number: 20130165714
    Abstract: A process for isomerizing light paraffins using a catalyst comprising an *SFV-type zeolite and at least one Group VIII metal. It has been found that the catalyst can selectively convert C6 paraffins into the more favorable higher octane C6 isomer, namely 2,3-dimethylbutane (RON=105), over the less favorable C6 isomer, namely octane 2,2-dimethylbutane (RON=94).
    Type: Application
    Filed: December 21, 2011
    Publication date: June 27, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Xiaoying Ouyang, Stacey I. Zones, Saleh A. Elomari
  • ISOMERIZATION OF LIGHT PARAFFINS
    Publication number: 20130165713
    Abstract: A process for isomerizing light paraffins using a catalyst comprising an SFS-type zeolite and at least one Group VIII metal. It has been found that the catalyst can selectively convert C6 paraffins into the more favorable higher octane C6 isomer, namely 2,3-dimethylbutane (RON=105), over the less favorable C6 isomer, namely octane 2,2-dimethylbutane (RON=94).
    Type: Application
    Filed: December 21, 2011
    Publication date: June 27, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Xiaoying Ouyang, Saleh A. Elomari
  • Process for the production of para-xylene
    Patent number: 8471083
    Abstract: A reforming process using a medium pore zeolite under conditions to facilitate the conversion of C8 paraffinic compounds to para-xylene is provided. Para-xylene is produced at greater than thermodynamic equilibrium concentrations using the process.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: June 25, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Ann Jia-Bao Liang, Stephen Joseph Miller, James Nathan Ziemer
  • HYDROCONVERSION OF RENEWABLE FEEDSTOCKS
    Publication number: 20130150615
    Abstract: A hydrocarbon conversion process comprises contacting a renewable feedstock under hydroprocessing conditions with supported catalyst comprising at least one metal selected from the group consisting of Group VIII metals, Group VIB metals to form oleochemicals such as fatty alcohols, esters, and normal paraffins. Advantageously, the reaction conditions can be selected to directly convert the renewable feedstock to the desired product(s).
    Type: Application
    Filed: December 9, 2011
    Publication date: June 13, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventor: Cong-Yan Chen
  • HYDROCONVERSION OF RENEWABLE FEEDSTOCKS
    Publication number: 20130150641
    Abstract: A hydrocarbon conversion process comprises contacting a renewable feedstock under hydroprocessing conditions with supported catalyst comprising at least one metal selected from the group consisting of Group VIII metals, Group VIB metals to form oleochemicals such as fatty alcohols, esters, and normal paraffins. Advantageously, the reaction conditions can be selected to directly convert the renewable feedstock to the desired product(s).
    Type: Application
    Filed: December 9, 2011
    Publication date: June 13, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventor: Cong-Yan Chen
  • HYDROCONVERSION OF RENEWABLE FEEDSTOCKS
    Publication number: 20130150635
    Abstract: A hydrocarbon conversion process comprises contacting a renewable feedstock under hydroprocessing conditions with a bulk catalyst to form oleochemicals such as fatty alcohols, esters, and normal paraffins. Advantageously, the reaction conditions can be selected to directly convert the renewable feedstock to the desired product(s).
    Type: Application
    Filed: December 9, 2011
    Publication date: June 13, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: CONG-YAN CHEN, ALEXANDER E. KUPERMAN, WILLIAM J. CANNELLA
  • HYDROCONVERSION OF RENEWABLE FEEDSTOCKS
    Publication number: 20130150636
    Abstract: A hydrocarbon conversion process comprises contacting a renewable feedstock under hydroprocessing conditions with supported catalyst comprising at least one metal selected from the group consisting of Group VIII metals, Group VIB metals to form oleochemicals such as fatty alcohols, esters, and normal paraffins. Advantageously, the reaction conditions can be selected to directly convert the renewable feedstock to the desired product(s).
    Type: Application
    Filed: December 9, 2011
    Publication date: June 13, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventor: Cong-Yan Chen
  • HYDROCONVERSION OF RENEWABLE FEEDSTOCKS
    Publication number: 20130150600
    Abstract: A hydrocarbon conversion process comprises contacting a renewable feedstock under hydroprocessing conditions with a bulk catalyst to form oleochemicals such as fatty alcohols, esters, and normal paraffins. Advantageously, the reaction conditions can be selected to directly convert the renewable feedstock to the desired product(s).
    Type: Application
    Filed: December 9, 2011
    Publication date: June 13, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Alexander E. Kuperman, William J. Cannella
  • HYDROCONVERSION OF RENEWABLE FEEDSTOCKS
    Publication number: 20130150631
    Abstract: A hydrocarbon conversion process comprises contacting a renewable feedstock under hydroprocessing conditions with a bulk catalyst to form oleochemicals such as fatty alcohols, esters, and normal paraffins. Advantageously, the reaction conditions can be selected to directly convert the renewable feedstock to the desired product(s).
    Type: Application
    Filed: December 9, 2011
    Publication date: June 13, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Alexander E. Kuperman, William J. Cannella
  • PROCESS FOR THE PRODUCTION OF PARA-XYLENE
    Publication number: 20130131413
    Abstract: A reforming process using a medium pore zeolite under conditions to facilitate the conversion of C8 paraffinic compounds to para-xylene is provided. Para-xylene is produced at greater than thermodynamic equilibrium concentrations using the process.
    Type: Application
    Filed: January 11, 2013
    Publication date: May 23, 2013
    Inventors: Cong-Yan Chen, Ann Jia-Bao Liang, Stephen Joseph Miller, James Nathan Ziemer
  • CALIXARENE-BOUND IRIDIUM-CONTAINING METAL COLLOIDS
    Publication number: 20130018199
    Abstract: The invention provides complexes in which a calixarene-related compound is coordinated to an iridium-containing metal colloid. The complexes can be immobilized on a substrate. The complexes of the invention are useful as tunable and highly robust isolated metal colloids that find use in binding of molecules and catalysis of chemical reactions.
    Type: Application
    Filed: October 22, 2010
    Publication date: January 17, 2013
    Inventors: Alexander Katz, Namal De Silva, Andrew Solovyov, Alexander Kuperman, Cong-Yan Chen, Partha Nandi, Alexander Okrut, Igor Busygin
  • TREATMENT OF COLD START ENGINE EXHAUST
    Publication number: 20120260628
    Abstract: A method of treating a cold-start engine exhaust gas stream comprising hydrocarbons and other pollutants, the method comprising: flowing the exhaust gas stream over a molecular sieve bed, the molecular sieve bed comprising an alkali metal cation-exchanged molecular sieve having intersecting 10- and 12-membered ring pore channels, to provide a first exhaust stream; flowing the first exhaust gas stream over a catalyst to convert any residual hydrocarbons and other pollutants contained in the first exhaust gas stream to innocuous products to provide a treated exhaust stream; and discharging the treated exhaust stream into the atmosphere.
    Type: Application
    Filed: April 18, 2011
    Publication date: October 18, 2012
    Applicant: Chevron U.S.A. Inc.
    Inventors: Shanmugam Palani Elangovan, Tatsuya Okubo, Stacey I. Zones, Cong-Yan Chen, Allen W. Burton
  • Isomerization of light paraffins
    Patent number: 8222473
    Abstract: A process for isomerizing light paraffins using a catalyst comprising an STI-type zeolite and at least one Group VIII metal. It has been found that the catalyst can selectively convert C6 paraffins into the more favorable higher octane C6 isomer, namely 2,3-dimethylbutane (RON=105), over the less favorable C6 isomer, namely octane 2,2-dimethylbutane (RON=94).
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: July 17, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Xiaoying Ouyang, Tracy M. Davis, Stacey I. Zones
  • Zeolite catalyst for hydroisomerization of light paraffins to produce high octane gasoline
    Patent number: 8198501
    Abstract: The present invention is directed to a process for isomerizing light paraffins by using a catalyst containing a zeolite selected from the group consisting of CON- and TUN-type zeolites, and at least one Group VIII metal. It has been found that the CON- and TUN-type zeolite catalysts of the present invention selectively convert C6 paraffins into the more favorable higher octane C6 isomer, namely 2,3-dimethylbetane (RON 101.0), over the less favorable C6 isomer, namely octane 2,2-dimethylbutane (RON 91.8).
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: June 12, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Cong-Yan Chen, Stacey I. Zones
  • PROCESS FOR THE PRODUCTION OF PARA-XYLENE
    Publication number: 20120029257
    Abstract: A reforming process using a medium pore zeolite under conditions to facilitate the conversion of C8 paraffinic compounds to para-xylene is provided. Para-xylene is produced at greater than thermodynamic equilibrium concentrations using the process.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 2, 2012
    Inventors: Cong-Yan Chen, Stephen J. Miller, James N. Ziemer, Ann J. Liang
  • MULTI-STAGE REFORMING PROCESS WITH FINAL STAGE CATALYST REGENERATION
    Publication number: 20120024754
    Abstract: The present invention relates to a multistage reforming process to produce a high octane product. A naphtha boiling range feedstock is processed in a multi-stage reforming process, in which said process involves at least 1) a penultimate stage for reforming the naphtha feedstock to produce a penultimate effluent 2) a final stage for further reforming at least a portion of the penultimate effluent 3) a regeneration step for the final stage catalyst. The severity of the penultimate stage can be increased during final stage catalyst regeneration in order to maintain the target RON of the reformate product and avoid reactor downtime.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 2, 2012
    Inventors: Cong-Yan Chen, Stephen J. Miller, James N. Ziemer, Ann J. Liang