C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
260/538.5
C01B 31/28 (2006.01)
Patent
CA 1236115
Mo-2569 LeA 22,475 PROCESS FOR THE PRODUCTION OF PHOSGENE WITH SIMULTANEOUS GENERATION OF STEAM ABSTRACT OF THE DISCLOSURE 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°C until 95 to 98% chlorine has reacted. The reaction gases are cooled to a temperature of from 50 to 120°C and then introduced into a second reactor main- tained at 50 to 100°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. Mo-2569 LeA 22, 475
458670
Liebsch Dietrich
Porkert Helmut F.
Sauer Heinz
Aktiengesellschaft Bayer
Marcoux & Sher Swabey Mitchell Houle
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