Title:
METHOD AND APPARATUS FOR PRODUCING ETHYLENE GLYCOL USING ETHYLENE CARBONATE AND METHANOL
Document Type and Number:
WIPO Patent Application WO/2020/233441
Kind Code:
A1
Abstract:
Disclosed are a method and an apparatus for producing ethylene glycol using ethylene carbonate and methanol. The method comprises the following steps: a) performing pre-reaction of heated reactants to obtain a pre-treatment material, the reactants comprising ethylene carbonate and methanol; b) subjecting the pre-treatment material to a catalytic rectification reaction to obtain a material stream I; c) separating methanol from the material stream I to obtain a material stream II; and d) subjecting the material stream II to rectification to obtain a target product, the target product comprising ethylene glycol; wherein the catalytic rectification reaction is performed in the presence of a catalyst I, the catalyst I comprising a solid catalyst. The method involves a transesterification production process using a solid catalyst, and overcomes the disadvantages of high catalyst consumption, high production cost, difficult post-treatment, and generation of solid wastes when a homogeneous catalyst is used.
Inventors:
JIA FENGLEI (CN)
GUO JIANJUN (CN)
LI XIN (CN)
MA GUO (CN)
LI GUANGKE (CN)
GUO YUNSHAN (CN)
CHANG GUANGKAI (CN)
GUO JIANJUN (CN)
LI XIN (CN)
MA GUO (CN)
LI GUANGKE (CN)
GUO YUNSHAN (CN)
CHANG GUANGKAI (CN)
Application Number:
PCT/CN2020/089697
Publication Date:
November 26, 2020
Filing Date:
May 12, 2020
Export Citation:
Assignee:
SHANDONG SHIDA SHENGHUA CHEM GROUP CO LTD (CN)
International Classes:
C07C29/128; B01J23/04; B01J29/80; C07C27/02; C07C31/20; C07C69/96
Domestic Patent References:
| WO2000073256A1 | 2000-12-07 | |||
| WO2002070452A1 | 2002-09-12 |
Foreign References:
| CN110105174A | 2019-08-09 | |||
| CN109651153A | 2019-04-19 | |||
| CN1201448A | 1998-12-09 | |||
| US4691041A | 1987-09-01 | |||
| JP2004008996A | 2004-01-15 |
Other References:
CROCELLA, VALENTINA ET AL.: "A multi-technique approach to disclose the reaction mechanism of dimethyl carbonate synthesis over amino-modified SBA-15 catalysts.", APPLIED CATALYSIS, B: ENVIRONMENTAL., vol. 211, 6 April 2017 (2017-04-06), pages 323 - 336, XP085011103, ISSN: 0926-3373
XU, JIE ET AL.: "Mesostructured graphitic carbon nitride as a new base catalyst for the efficient synthesis of dimethyl carbonate by transesterification.", CATALYSIS SCIENCE & TECHNOLOGY., vol. 3, no. 12, 28 August 2013 (2013-08-28), pages 3192 - 3199, XP055755167, ISSN: 2044-4753
See also references of EP 3974409A4
XU, JIE ET AL.: "Mesostructured graphitic carbon nitride as a new base catalyst for the efficient synthesis of dimethyl carbonate by transesterification.", CATALYSIS SCIENCE & TECHNOLOGY., vol. 3, no. 12, 28 August 2013 (2013-08-28), pages 3192 - 3199, XP055755167, ISSN: 2044-4753
See also references of EP 3974409A4
Attorney, Agent or Firm:
PERIODIC LAW FIRM (CN)
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