公开(公告)号：US20240263084A1

公开(公告)日：2024-08-08

申请号：US18617309

申请日：2024-03-26

Applicant: Chevron U.S.A. Inc.

Inventor： Cong-Yan CHEN ,  Emmanuel BEHRAZ

IPC: C10G59/06 ,  B01D3/00 ,  B01J29/40

CPC classification number: C10G59/06 ,  B01D3/00 ,  B01J29/40 ,  C10G2300/1044 ,  C10G2300/308 ,  C10G2300/4018 ,  C10G2400/02

Abstract: An improved reforming process for producing aromatic hydrocarbons is disclosed. The process includes two reformers arranged in parallel flow configuration, with the first reformer being a conventional reformer comprising a catalyst selective for reforming C8+ hydrocarbons to a reformate and the second reformer comprising a catalyst selective for reforming C7− hydrocarbons to a reformate. In certain embodiments, the first reformer catalyst comprises a conventional alumina catalyst and the second reformer catalyst comprises a ZSM-5 catalyst.

公开(公告)号：US20240123433A1

公开(公告)日：2024-04-18

申请号：US18270208

申请日：2021-12-29

Applicant: CHEVRON U.S.A. INC.

Inventor： Cong-Yan CHEN ,  Theodorus Ludovicus Michael MAESEN ,  Tracy Margaret DAVIS ,  Dan XIE

IPC: B01J29/068 ,  B01J35/64 ,  C10G47/18

CPC classification number: B01J29/068 ,  B01J35/643 ,  C10G47/18 ,  B01J2229/20 ,  B01J2229/42 ,  C10G2300/1033

Abstract: Provided is a process for hydrocracking normal paraffins into lighter normal paraffins with minimal formation of iso-paraffins. The process comprises hydrocracking a hydrocarbon feedstock comprising normal paraffins under hydrocracking conditions. The reaction is run in the presence of a selected catalyst, e.g., an LTA-type zeolite, with a requisite topology and acid site density. The zeolite has a framework type with voids greater than 0.50 nm in diameter, which are accessible through apertures characterized by a longest diameter of less than 0.50 nm and a shortest diameter of more than 0.30 nm. The reaction conducted in the presence of such a selected zeolite produces an n-paraffin rich product.

公开(公告)号：US20240091750A1

公开(公告)日：2024-03-21

申请号：US18458226

申请日：2023-08-30

Applicant: Chevron U.S.A. Inc.

Inventor： Stacey I. ZONES ,  Cong-Yan CHEN

IPC: B01J29/70 ,  B01J29/74 ,  B01J37/00 ,  B01J37/03 ,  B01J37/04 ,  B01J37/08 ,  C01B39/04 ,  C01B39/12 ,  C10G35/095

CPC classification number: B01J29/7049 ,  B01J29/74 ,  B01J37/0018 ,  B01J37/031 ,  B01J37/04 ,  B01J37/08 ,  C01B39/04 ,  C01B39/12 ,  C10G35/095 ,  B01J2229/183 ,  C01P2002/72 ,  C10G2300/1044

Abstract: A novel synthetic crystalline molecular sieve material, designated boron SSZ-41 is provided. The boron SSZ-41 is a boronzincosilicate molecular sieve having the framework structure of SSZ-41. It can be synthesized using 1,1′-(1,4-butanediyl)bis[4-aza-1-azoniabicyclo[2.2.2]octane] dications as a structure directing agent. The boronzincosilicate SSZ-41 may be used in organic compound conversion reactions and/or sorptive processes.

公开(公告)号：US20240059986A1

公开(公告)日：2024-02-22

申请号：US18269922

申请日：2021-12-29

Applicant: CHEVRON U.S.A. INC.

Inventor： Joel SCHMIDT ,  Cong-Yan CHEN ,  Theodorus Ludovicus Michael MAESEN ,  Dan XIE

IPC: C10G65/12

CPC classification number: C10G65/12 ,  C10G2300/70 ,  C10G2300/807 ,  C10G2300/1081

Abstract: Provided is a process for hydrocracking normal paraffins into lighter normal paraffins with minimal formation of iso-paraffins. The process comprises hydrocracking a hydrocarbon feedstock comprising normal paraffins under hydrocracking conditions. The reaction is run in the presence of a specific type of zeolite based catalyst which has been found to provide high conversion with minimal iso-paraffin products. In one embodiment, the zeolite is of the framework PWO. The reaction conducted in the presence of the zeolite based catalyst produces an n-paraffin rich product that needs no separation step before being fed to a steam cracker to produce lower olefins.

公开(公告)号：US20220243137A1

公开(公告)日：2022-08-04

申请号：US17605286

申请日：2020-04-21

Applicant: Chevron U.S.A. Inc.

Inventor： Cong-Yan CHEN ,  Emmanuel BEHRAZ

IPC: C10G59/06 ,  B01J29/40 ,  B01D3/00

Abstract: An improved reforming process for producing aromatic hydrocarbons is disclosed. The process includes two reformers arranged in parallel flow configuration, with the first reformer being a conventional reformer comprising a catalyst selective for reforming C8+ hydrocarbons to a reformate and the second reformer comprising a catalyst selective for reforming C7− hydrocarbons to a reformate. In certain embodiments, the first reformer catalyst comprises a conventional alumina catalyst and the second reformer catalyst comprises a ZSM-5 catalyst.

公开(公告)号：US20210221696A1

公开(公告)日：2021-07-22

申请号：US17023662

申请日：2020-09-17

Applicant: CHEVRON U.S.A. INC.

Inventor： Stacey Ian ZONES ,  Dan XIE ,  Cong-Yan CHEN

IPC: C01B39/48

Abstract: A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-117, is provided. SSZ-117 can be synthesized using N,N,N,3,5-pentamethyladamantan-1-ammonium cations as a structure directing agent. SSZ-117 may be used in organic compound conversion reactions and/or sorptive processes.