公开(公告)号：US20230312863A1

公开(公告)日：2023-10-05

申请号：US18128444

申请日：2023-03-30

Applicant: Chevron U.S.A. Inc.

Inventor： Hye-Kyung C. TIMKEN ,  Tengfei LIU ,  Joel E. SCHMIDT ,  Kaustav CHAUDHURI

IPC: C08J11/20

CPC classification number: C08J11/20 ,  C08J2323/06 ,  C08J2323/12

Abstract: Provided is a blend of a petroleum feedstock and 1-20 wt. % of plastic, based on the weight of the blend, with the plastic comprising polyethylene and/or polypropylene, and the plastic in the blend comprising finely dispersed microcrystalline particles having an average particle size of 10 micron to less than 100 microns. A process for preparing a blend of plastic and petroleum is provided, comprising mixing together a petroleum feed and a plastic comprising polyethylene and/or polypropylene and heating the mixture above the melting point of the plastic, but less than 500° F. Then cooling the plastic melt and petroleum feedstock liquid blend with mixing to a temperature below the melting point of the plastic.

公开(公告)号：US20230001383A1

公开(公告)日：2023-01-05

申请号：US17774085

申请日：2020-11-04

Applicant: CHEVRON U.S.A. INC.

Inventor： Ann LIANG ,  Trenton J. OTTO ,  Jifei JIA ,  Ling JIAO ,  Bao Q. LE ,  Kaustav CHAUDHURI ,  Bi-Zeng ZHAN

IPC: B01J21/12 ,  B01J29/10 ,  B01J35/10 ,  B01J35/00 ,  B01J37/04 ,  B01J37/06 ,  B01J37/00 ,  B01J37/08 ,  C10G47/18 ,  C10G45/12

Abstract: A silica-alumina based composite material for making hydroprocessing catalysts, is disclosed. The silica-alumina composite material generally comprises at least two silica-aluminas, the first being a modified first silica-alumina, and the second being a second silica-alumina that is unmodified or modified. The first silica-alumina is modified to comprise silica and alumina domains and a silica-alumina interphase. The second silica-alumina may also be modified at the same time or separately to comprise silica and alumina domains and a silica-alumina interphase. The first silica-alumina and the second silica-alumina differ in one or more physical and/or chemical characteristics, e.g., the ratio of silica to alumina, surface area, pore size, pore volume, silica domain size, or alumina domain size. The invention can be used for making catalyst base materials and catalysts useful for upgrading hydrocarbon feedstocks to produce fuels, lubricants, chemicals and other hydrocarbonaceous compositions.