Evaporating solutions which contain phosgene in a vacuum liquid

Details Evaporating solutions which contain phosgene in a vacuum liquid Evaporating solutions which contain phosgene in a vacuum liquid

1973-08-28

1976-05-04

Yudkoff, Norman

Distillation: processes, separatory

Distillation in apparatus or element of specific material

203 87, 260453A, 417 68, B01D 300

Patent

active

039545679

ABSTRACT:
Solutions of phosgene, an organic solvent and nitrogen or oxygen compounds which have a higher boiling point than the solvent are evaporated in a vacuum which is produced by a liquid ring pump operated on a phosgene-containing solvent as working fluid, the used working fluid being subsequently returned to the process.

REFERENCES:
patent: 1972157 (1934-09-01), Miller
patent: 2489703 (1949-11-01), Cook et al.
patent: 3102083 (1963-08-01), Adams
patent: 3175969 (1965-03-01), Slover
patent: 3228860 (1966-01-01), Larson
patent: 3505176 (1970-04-01), Buchsbaum et al.
patent: 3549504 (1970-12-01), Adica et al.

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