Title:
SYSTEM AND PROCESS FOR CO-PRODUCING DIMETHYL CARBONATE AND ETHYLENE GLYCOL
Document Type and Number:
WIPO Patent Application WO/2018/233093
Kind Code:
A1
Abstract:
A system and a process for co-producing dimethyl carbonate and ethylene glycol. The system comprises an interconnected ethylene carbonate preparation unit and an ethylene carbonate alcoholysis unit. The ethylene carbonate preparation unit comprises a fixed bed reactor and a light-component stripping column connected to each other. The fixed bed reactor is filled with a supported ionic liquid catalyst. The process comprises the steps of: reacting carbon dioxide and ethylene oxide as raw materials in the fixed bed reactor to produce ethylene carbonate, purifying the ethylene carbonate and then mixing it with an alcoholysis reaction catalyst, and reacting the mixture with methanol in a reactive distillation tower, producing dimethyl carbonate and ethylene glycol. The process increases the conversion rate of ethylene oxide and avoids the need for a process of separating conventional homogeneous catalysts from ethylene carbonate, thereby reducing process energy consumption and simplifying process procedures.
Inventors:
CHENG WEIGUO (CN)
DONG LI (CN)
SU QIAN (CN)
CHEN SONGSONG (CN)
ZHANG JUNPING (CN)
ZHANG SUOJIANG (CN)
DONG LI (CN)
SU QIAN (CN)
CHEN SONGSONG (CN)
ZHANG JUNPING (CN)
ZHANG SUOJIANG (CN)
Application Number:
PCT/CN2017/101784
Publication Date:
December 27, 2018
Filing Date:
September 14, 2017
Export Citation:
Assignee:
INST PROCESS ENG CAS (CN)
International Classes:
C07C69/96; C07C29/128; C07C31/20; C07C68/06; C07D317/38
Foreign References:
| US6407279B1 | 2002-06-18 | |||
| CN1733696A | 2006-02-15 | |||
| CN1212252A | 1999-03-31 | |||
| CN104761429A | 2015-07-08 | |||
| CN1432557A | 2003-07-30 | |||
| US4233221A | 1980-11-11 | |||
| CN1102826A | 1995-05-24 | |||
| CN102516220A | 2012-06-27 | |||
| CN101318949A | 2008-12-10 | |||
| CN103172608A | 2013-06-26 | |||
| CN102391241A | 2012-03-28 | |||
| CN102336736A | 2012-02-01 |
Other References:
TIAN, XIAO ET AL.: "Design and multi-objective optimization of EG /DMC co-production process", COMPUTERS AND APPLIED CHEMISTRY, vol. 27, no. 8, 1 August 2010 (2010-08-01), pages 1059 - 1062, XP055658504, DOI: 10.16866/j.com.app.chem2010.08.015
WU, QINGHAI ET AL.: "Synthesis of Ethylene Carbonate via Carbon Dioxide and Ethylene Oxide Catalyzed by Immobilized Ionic Liquid", THE CHINESE JOURNAL OF PROCESS ENGINEERING, vol. 12, no. 2, 1 April 2012 (2012-04-01), pages 302 - 309, XP055658518
See also references of EP 3643698A4
WU, QINGHAI ET AL.: "Synthesis of Ethylene Carbonate via Carbon Dioxide and Ethylene Oxide Catalyzed by Immobilized Ionic Liquid", THE CHINESE JOURNAL OF PROCESS ENGINEERING, vol. 12, no. 2, 1 April 2012 (2012-04-01), pages 302 - 309, XP055658518
See also references of EP 3643698A4
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
Download PDF:
Previous Patent: METHOD FOR PREPARING RUBUSOSIDE
Next Patent: FLOTATION RAFT TYPE DRIVING SEAT STRUCTURE OF CRAWLER-TYPE CEREAL COMBINE HARVESTER
Next Patent: FLOTATION RAFT TYPE DRIVING SEAT STRUCTURE OF CRAWLER-TYPE CEREAL COMBINE HARVESTER