- Patent Title: Processes for the production of ethylene oxide and ethylene glycol
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Application No.: US16765647Application Date: 2018-11-20
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Publication No.: US11325877B2Publication Date: 2022-05-10
- Inventor: Ram Paul Bajaj , Peter Molenaar
- Applicant: SHELL OIL COMPANY
- Applicant Address: US TX Houston
- Assignee: SHELL OIL COMPANY
- Current Assignee: SHELL OIL COMPANY
- Current Assignee Address: US TX Houston
- Agency: Shell USA, Inc.
- Priority: EP17203352 20171123
- International Application: PCT/EP2018/081844 WO 20181120
- International Announcement: WO2019/101707 WO 20190531
- Main IPC: C07C29/74
- IPC: C07C29/74 ; C07C29/80 ; C07C29/76 ; C07C29/78 ; C07C31/20

Abstract:
A process for the recovery of ethylene glycol from an aqueous stream comprising ethylene glycol is disclosed. The process comprises (a) subjecting an aqueous stream 5 comprising ethylene glycol to an evaporation step in a multiple-effect evaporator to obtain a concentrated stream comprising ethylene glycol; (b) subjecting said concentrated stream comprising ethylene glycol to a first dehydration step in a first dehydrator 10 operating at an overhead pressure in the range of 0 barg (bar gauge) to 4 barg (bar gauge) to obtain a partially dehydrated ethylene glycol stream, and (c) subjecting said partially dehydrated ethylene glycol stream to a second dehydration step in a second dehydrator operating under 15 vacuum to obtain a dehydrated ethylene glycol stream.
Public/Granted literature
- US20200299215A1 PROCESSES FOR THE PRODUCTION OF ETHYLENE OXIDE AND ETHYLENE GLYCOL Public/Granted day:2020-09-24
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