Title:
METHOD FOR CO-PRODUCTION OF METHANOL AND ETHANOL FROM SYNTHESIS GAS
Document Type and Number:
WIPO Patent Application WO/2023/274289
Kind Code:
A1
Abstract:
The present invention relates to a method for co-production of methanol and ethanol from a synthesis gas, the reaction process being completed in three reactors. The method comprises: a) causing raw material synthesis gas and dimethyl ether to enter a first reactor to contact a solid acid catalyst in the first reactor to react, obtaining an effluent containing methyl acetate and/or acetic acid; b) causing the effluent from the first reactor to undergo separation and purification, and causing purified MA and synthesis gas to enter a second reactor to contact a hydrogenation catalyst in the second reactor and undergo a reaction, obtaining an effluent containing methanol and ethanol; c) separating the effluent from the second reactor, obtaining product methanol and ethanol; and d) optionally, causing methanol from step c) to enter a third reactor so as to perform a dehydration reaction, obtaining dimethyl ether, and causing the obtained dimethyl ether and unconverted synthesis gas to enter the first reactor for cyclic reaction. The present process has the flexibility to generate methanol and ethanol from a synthesis gas, and at the same time solves the problem of stability of the MA hydrogenation catalyst. Compared with indirect methods, it does not have the step of producing methanol from a synthesis gas, nor does it require separation of carbon monoxide and hydrogen from the synthesis gas, and co-production of methanol and ethanol from the synthesis gas can be achieved.
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Inventors:
YUAN XINGDONG (JP)
Application Number:
PCT/CN2022/102266
Publication Date:
January 05, 2023
Filing Date:
June 29, 2022
Export Citation:
Assignee:
HIGHCHEM CO LTD (JP)
YUAN XINGDONG (JP)
YUAN XINGDONG (JP)
International Classes:
C07C31/04; B01J23/80; C07C29/149; C07C29/74; C07C31/08
Foreign References:
| CN102247868A | 2011-11-23 | |||
| CN103433039A | 2013-12-11 | |||
| CN103012062A | 2013-04-03 | |||
| CN109574798A | 2019-04-05 | |||
| EP2072492A1 | 2009-06-24 | |||
| US20170022129A1 | 2017-01-26 | |||
| CN109574839A | 2019-04-05 | |||
| US20110124927A1 | 2011-05-26 |
Attorney, Agent or Firm:
ZHONGZI LAW OFFICE (CN)
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