Process for the production of phosgene with simultaneous generat

Details Process for the production of phosgene with simultaneous generat Process for the production of phosgene with simultaneous generat

1987-09-30

1988-08-16

Killos, Paul J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5158

Patent

active

047643080

ABSTRACT:
Phosgene is produced by reacting chlorine and an excess of carbon monoxide in the presence of activated charcoal in a two stage process. In the first stage, the chlorine and carbon monoxide are reacted in a tubular reactor containing activated charcoal at a temperature above 250.degree. C. until 95 to 98% chlorine has reacted. The reaction gases are cooled to a temperature of from 50.degree. to 120.degree. C. and then introduced into a second reactor maintained at 50 to 100.degree. C. where the phosgene-forming reaction is completed. The phosgene leaving the second reactor has a residual chlorine content of less than 50 ppm. The heat generated during phosgene formation is used to produce steam.

REFERENCES:
patent: 1457493 (1923-06-01), Bradner
patent: 3364272 (1968-01-01), Ager
patent: 4073806 (1978-02-01), Doubovetzky et al.
patent: 4133831 (1979-01-01), Masaki
patent: 4231959 (1980-11-01), Obrecht

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