METHOD AND SYSTEM FOR PREPARING EPOXYPROPANE BY DIRECTLY EPOXIDIZING PROPYLENE

Title:

METHOD AND SYSTEM FOR PREPARING EPOXYPROPANE BY DIRECTLY EPOXIDIZING PROPYLENE

Document Type and Number:

WIPO Patent Application WO/2022/007387

Kind Code:

A1

Abstract:

The present invention relates to the field of epoxypropane preparation, and in particular to a method and system for preparing epoxypropane by directly epoxidizing propylene. The method comprises: under a propylene epoxidation reaction condition, a mixed gas containing a first feed gas and a second feed gas undergoes a contact reaction with a catalyst to obtain epoxypropane, wherein the first feed gas contains oxygen, and does not contain or substantially does not contain hydrogen, the second feed gas contains hydrogen, and does not contain or substantially does not contain oxygen, the first feed gas and/or the second feed gas contain/contains propylene, and at least one of the first feed gas and the second feed gas further contains a diluent gas. By using the technical solution of the present invention, the amount of diluent gas used can be reduced, preferably, a tail gas is recycled, and the conversion rate of propylene is significantly improved without affecting the lifetime of the catalyst.

Inventors:

SUN BING (CN)
ZHAO CHENYANG (CN)
YANG ZHE (CN)
ZHU HONGWEI (CN)
WANG LIN (CN)
JIANG JIE (CN)
SHI NING (CN)
LI NA (CN)
WANG SHIQIANG (CN)
WANG HAOZHI (CN)

Application Number:

PCT/CN2021/073744

Publication Date:

January 13, 2022

Filing Date:

January 26, 2021

Export Citation:

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Assignee:

CHINA PETROLEUM & CHEM CORP (CN)
CHINA PETROLEUM & CHEMICAL CORPORATION QINGDAO RES INSTITUTE OF SAFETY ENGINEERING (CN)

International Classes:

C07D303/14

Domestic Patent References:

WO2008069871A1

2008-06-12

Foreign References:

CN108602789A	2018-09-28
CN111298806A	2020-06-19
JP2009051769A	2009-03-12
CN202010662738A	2020-07-10

Other References: