Title:
METHOD FOR PRODUCING ETHYLENE GLYCOL
Document Type and Number:
Japanese Patent JP3800488
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable the effective utilization of energy in the dehydrating concentration step of an aqueous solution of ethylene glycol in a composite process comprising the catalytic vapor-phase oxidation of ethylene and the reaction of the produced ethylene oxide with water to form ethylene glycol.
SOLUTION: Ethylene glycol is produced by supplying an aqueous solution of ethylene glycol to a multiple-effect evaporator and concentrating the solution. In the above process, steam generated by the multiple-effect evaporator is used as a heat source of at least one step of specific steps.
Inventors:
Yukihiko Kakimoto
Yoshihisa Oka
Yoshihisa Oka
Application Number:
JP2000134796A
Publication Date:
July 26, 2006
Filing Date:
May 08, 2000
Export Citation:
Assignee:
Nippon Shokubai Co., Ltd.
International Classes:
B01J23/50; C07C29/10; C07B61/00; C07C31/20; C07C41/03; C07C43/10; C07C43/11; C07D301/10; (IPC1-7): C07C29/10; B01J23/50; C07C31/20; C07C41/03; C07C43/10; C07C43/11; //C07B61/00
Domestic Patent References:
| JP54016416A | ||||
| JP49094613A | ||||
| JP51125308A | ||||
| JP59042340A |
Attorney, Agent or Firm:
Mikio Hatta
Yasuo Nara
Katsuyuki Utani
Yasuo Nara
Katsuyuki Utani
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