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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12780770 B1

PDFFull Text
Date of Patent:
Nov. 03, 2026

Filed:

Jan. 26, 2021

Method and system for preparing epoxypropane by directly epoxidizing propylene

Applicants:

China Petroleum & Chemical Corporation, Beijing, CN;

Sinopec Research Institute of Safety Engineering Co., Ltd., Qingdao, CN;

Inventors:

Bing Sun, Qingdao, CN;

Chenyang Zhao, Qingdao, CN;

Zhe Yang, Qingdao, CN;

Hongwei Zhu, Qingdao, CN;

Lin Wang, Qingdao, CN;

Jie Jiang, Qingdao, CN;

Ning Shi, Qingdao, CN;

Na Li, Qingdao, CN;

Shiqiang Wang, Qingdao, CN;

Haozhi Wang, Qingdao, CN;

Assignees:

CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;

SINOPEC RESEARCH INSTITUTE OF SAFETY ENGINEERING CO., LTD., Qingdao, CN;

Attorneys:

NKL LAW

Allen Xue

Primary Examiner:

Ana Z Muresan

Int. Cl.
CPC ...
C07C 41/02 (2006.01); B01J 19/00 (2006.01); B01J 19/14 (2006.01); B01J 29/068 (2006.01);
U.S. Cl.
CPC ...
C07C 41/02 (2013.01); B01J 19/0013 (2013.01); B01J 19/14 (2013.01); B01J 29/068 (2013.01);
Abstract

A method and system for preparing epoxypropane by direct epoxidation of propylene includes the steps of subjecting a mixed gas of a first feed gas and a second feed gas to a contact reaction with a catalyst under reaction conditions of propylene epoxidation to prepare epoxypropane. The first feed gas contains oxygen gas and is free or substantially free of hydrogen gas. The second feed gas contains hydrogen gas and is free or substantially free of oxygen gas. The first feed gas and/or the second feed gas contain propylene, at least one of the first feed gas and the second feed gas further contains a diluent gas. The method can be used for reducing dosage of diluent gas, preferably recycling the tail gas, thereby significantly increasing the conversion rate of propylene without compromising the service life of catalyst.

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Sun, Bing. (2026). Method and system for preparing epoxypropane by directly epoxidizing propylene (U.S. Patent No. 12780770). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12780770

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