ETHYLENE OXIDE PRODUCTION PROCESS - NIPPON CATALYTIC CHEM IND

Title:

ETHYLENE OXIDE PRODUCTION PROCESS

Document Type and Number:

WIPO Patent Application WO/2014/157698

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide a means which can inhibit an ethylene oxide production process from yielding ethylene glycol as a by-product and can improve the yield of ethylene oxide. The ethylene oxide (EO) production process comprises the steps of feeding, to an EO absorption tower, an EO-containing reaction product gas produced in an ethylene oxidation step in which ethylene is subjected to catalytic vapor-phase oxidation with a gas containing molecular oxygen, in the presence of a silver catalyst, bringing the reaction product gas into contact with an absorbing liquid supplied to the absorption tower, feeding the EO-containing bottoms from the absorption tower to an EO purification system, and supplying the EO-containing uncondensed gas discharged from the purification system to an EO re-absorption tower, the re-absorption tower being operated at a pressure (tower top pressure) of 3-50 kPa gauge.

Inventors:

IGUCHI SHINGO (JP)
KAWAGUCHI YUKIMASA (JP)

Application Number:

PCT/JP2014/059345

Publication Date:

October 02, 2014

Filing Date:

March 28, 2014

Export Citation:

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Assignee:

NIPPON CATALYTIC CHEM IND (JP)

International Classes:

C07D301/10; C07D301/32; C07D303/04; C07B61/00

Foreign References:

JPS51118709A	1976-10-18
JPS63170206A	1988-07-14
JP2012167072A	2012-09-06
JPH08127573A	1996-05-21
JPS62103072A	1987-05-13
JPS60131817A	1985-07-13
JPH08127573A	1996-05-21
JPH059926B2	1993-02-08
JPH0428247B2	1992-05-13

Other References: