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Title:
PROCESS FOR PRODUCING CHLORINE AND PROCESS FOR PRODUCING ISOCYANATE
Document Type and Number:
Japanese Patent JP2009001477
Kind Code:
A
Abstract:

To provide a process for reducing the content of a sulfur component in an HCl-containing process gas from isocyanate equipment as efficiently as possible.

A process for producing isocyanate by phosgenation of the corresponding amine is provided in which (a) phosgen is formed by reacting carbon monoxide with chlorine, and (b) a crude isocyanate mixture and a gas stream containing hydrogen chloride are formed by reacting the phosgen with the amine, and thus chlorine is produced by catalytic oxidation of the hydrogen chloride stream containing sulfur in a content of 100ppm.


Inventors:
HAAS MICHAEL
BRUNS RAINER
LODDENKEMPER TIM
Application Number:
JP2008117469A
Publication Date:
January 08, 2009
Filing Date:
April 28, 2008
Export Citation:
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Assignee:
BAYER MATERIALSCIENCE AG
International Classes:
C01B7/04; B01J23/62; C07C263/10; C07C265/14
Domestic Patent References:
JP2004345883A2004-12-09
JP2005177614A2005-07-07
JP2006503785A2006-02-02
JPH06336469A1994-12-06
JP2007045815A2007-02-22
JP2002518369A2002-06-25
JP2007023077A2007-02-01
JP2004345883A2004-12-09
JP2005177614A2005-07-07
JP2006503785A2006-02-02
JPH06336469A1994-12-06
JP2007045815A2007-02-22
JP2002518369A2002-06-25
JP2007023077A2007-02-01
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Reinhard Einsel



 
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