Title:
SHORT-CONTACT REACTOR, AND SYSTEM AND METHOD FOR USING SAME IN PREPARATION OF ETHYLENE AND PROPYLENE FROM METHANOL
Document Type and Number:
WIPO Patent Application WO/2023/051566
Kind Code:
A1
Abstract:
The present invention provides a short-contact reaction system in the preparation of ethylene and propylene from methanol. The system comprises: a methanol-to-olefin short-contact reactor, a riser reactor, a double-dense bed, and a stripper. The methanol-to-olefin short-contact reactor is used to convert methanol to olefin-rich products. The methanol-to-olefin short-contact reactor comprises a methanol feed pipeline, a filter pipe wall and a product gas channel coaxially distributed from the inside to the outside, a catalyst distributor provided at the top part of the reactor, and a material seal pipe provided at the bottom part of the reactor. The material seal pipe is located inside of the stripper. The diameter of the top part of the product gas channel is larger than the diameter of the bottom part of the product gas channel. In the present invention, methanol is in cross-flow contact with downward coking catalyst II in the methanol-to-olefin short-contact reactor, and the cross-flow contact reaction between the methanol and the catalyst under the condition of a very short contact time may obtain a product having high selectivity of ethylene and propylene. The present invention better solves the problem of low selectivity of ethylene and propylene, and may be used in MTO industrial production.
Inventors:
LI XIAOHONG (CN)
QI GUOZHEN (CN)
YU ZHINAN (CN)
PENG FEI (CN)
WANG HONGTAO (CN)
ZHENG YIJUN (CN)
QI GUOZHEN (CN)
YU ZHINAN (CN)
PENG FEI (CN)
WANG HONGTAO (CN)
ZHENG YIJUN (CN)
Application Number:
PCT/CN2022/121966
Publication Date:
April 06, 2023
Filing Date:
September 28, 2022
Export Citation:
Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
SHANGHAI RES INST PETROCHEMICAL TECH SINOPEC (CN)
SHANGHAI RES INST PETROCHEMICAL TECH SINOPEC (CN)
International Classes:
B01J8/24; C07C1/20
Foreign References:
| CN101029250A | 2007-09-05 | |||
| CN101328431A | 2008-12-24 | |||
| CN101165026A | 2008-04-23 | |||
| CN102190551A | 2011-09-21 | |||
| US4052479A | 1977-10-04 |
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
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