Title:
PROCESS FOR PRODUCING CARBONYL SULFIDE
Document Type and Number:
WIPO Patent Application WO/2012/144441
Kind Code:
A1
Abstract:
An efficient process is provided in which sulfur is reacted with carbon monoxide in a liquid phase to produce carbonyl sulfide. In the presence of a base catalyst, carbon monoxide is continuously introduced into a reactor in which a liquid reaction mixture obtained by dissolving or suspending sulfur in an organic solvent is held, and the sulfur is reacted with the carbon monoxide at a pressure of 0.2-3.0 MPa and a temperature of 40-120ºC to yield carbonyl sulfide. The gaseous-phase part is withdrawn from the reactor, and the withdrawn gaseous-phase part is cooled with a cooler to condense the carbonyl sulfide contained in the gaseous-phase part. The condensed carbonyl sulfide is continuously withdrawn, and the gas that has not been condensed with the cooler is returned to the reactor. Thus, carbonyl sulfide is continuously produced.
Inventors:
OHNO HIROMOTO (JP)
YOKOO HIDEJIRO (JP)
IRIE SHIHO (JP)
YOKOO HIDEJIRO (JP)
IRIE SHIHO (JP)
Application Number:
PCT/JP2012/060163
Publication Date:
October 26, 2012
Filing Date:
April 13, 2012
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
OHNO HIROMOTO (JP)
YOKOO HIDEJIRO (JP)
IRIE SHIHO (JP)
OHNO HIROMOTO (JP)
YOKOO HIDEJIRO (JP)
IRIE SHIHO (JP)
International Classes:
C01B31/26; B01J31/02
Domestic Patent References:
| WO2004089824A1 | 2004-10-21 |
Foreign References:
| JPS4727634B1 | ||||
| JPS4740632B1 | ||||
| JPS5659614A | 1981-05-23 | |||
| JPS52131993A | 1977-11-05 | |||
| JPS5659613A | 1981-05-23 | |||
| US4120944A | 1978-10-17 | |||
| US3409399A | 1968-11-05 | |||
| US3235333A | 1966-02-15 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
Aoki 篤 (JP)
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Claims:
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