Title:
CO-PRODUCTION PROCESS METHOD FOR SYNTHESIZING METHYL PROPIONATE AND OTHER POLYESTERS AND ALCOHOLS FROM METHANOL AND CO
Document Type and Number:
WIPO Patent Application WO/2023/108799
Kind Code:
A1
Abstract:
A co-production process method for synthesizing methyl propionate and other polyesters and alcohols from methanol and CO, comprising the following steps: subjecting a reducing alcohol obtained by a system and raw material CO to a carbonylation reaction in a carbonylation reaction kettle to obtain a product containing acetic acid; flash-separating the product containing acetic acid and then feeding same into a side plate reaction distillation column, so as to undergo an esterification reaction with raw material methanol fed from the bottom in the side plate reaction distillation column; hydrogenating a gas-phase light component product resulting from the esterification reaction in the side plate reaction distillation column to obtain a reducing alcohol, the reduced alcohol being circulated back to the carbonylation reaction kettle to participate in the carbonylation reaction; and extracting a target product containing methyl propionate and methanol from the side plate reaction distillation column. According to the process, cheap methanol and CO are used as raw materials to implement synthesis of methyl propionate and alcohol, and low-cost methyl propionate and alcohol and co-production of polyesters such as methyl butyrate are obtained by means of an efficient heat energy recovery technology.
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Inventors:
XIANG JIAYONG (CN)
ZHU HUAIGONG (CN)
ZHU HUAIGONG (CN)
Application Number:
PCT/CN2021/141261
Publication Date:
June 22, 2023
Filing Date:
September 06, 2022
Export Citation:
Assignee:
JIANGSU HUDA CHEMICAL TECH CO LTD (CN)
International Classes:
C07C67/36; C07C29/80; C07C31/04; C07C69/24
Foreign References:
| CN112851507A | 2021-05-28 | |||
| CN107011118A | 2017-08-04 | |||
| CN107892648A | 2018-04-10 | |||
| CN112441903A | 2021-03-05 | |||
| EP0321054A2 | 1989-06-21 | |||
| CN114163328A | 2022-03-11 |
Attorney, Agent or Firm:
NANJING SUCHUANG INTELLECTUAL PROPERTY LAW FIRM (CN)
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