Invention Grant
- Patent Title: Processes for the production of ethylene glycol
- Patent Title (中): 生产乙二醇的方法
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Application No.: US13362835Application Date: 2012-01-31
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Publication No.: US09096564B2Publication Date: 2015-08-04
- Inventor: Jan Van Ogtrop , Abraham Adriaan Smaardijk , Hendrik Stichter
- Applicant: Jan Van Ogtrop , Hendrik Stichter , Jacqueline Hessing
- Applicant Address: US TX Houston
- Assignee: Shell Oil Company
- Current Assignee: Shell Oil Company
- Current Assignee Address: US TX Houston
- Priority: EP11152780 20110131
- Main IPC: C07C29/09
- IPC: C07C29/09 ; C07D301/22 ; C07C29/12 ; C07D301/04 ; C07C29/10

Abstract:
A process for the production of ethylene glycol comprising: (i) supplying ethylene and oxygen and an organic chloride moderator to an EO reactor, thereby producing a reactor product stream; (ii) supplying the reactor product stream to an EO absorber, thereby producing a fat absorbent stream; (iii) supplying the fat absorbent stream to an EO stripper, thereby producing a concentrated ethylene oxide stream and a lean absorbent stream; (iv) recirculating the lean absorbent stream to the EO absorber; and (v) supplying the ethylene oxide stream and/or the ethylene carbonate stream to hydrolysis reactors with an alkali metal salt hydrolysis catalyst to form an ethylene glycol stream; wherein the process additionally comprises: (vi) removing a glycol bleed stream from the ethylene oxide stripper; and (vii) adding a base to the ethylene oxide stripper such that the pH in the bottom section of the stripper is maintained from 9.5 to 12.0.
Public/Granted literature
- US20120197048A1 PROCESSES FOR THE PRODUCTION OF ETHYLENE GLYCOL Public/Granted day:2012-08-02
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