F - Mech Eng,Light,Heat,Weapons – 25 – J
Patent
F - Mech Eng,Light,Heat,Weapons
25
J
162/140
F25J 3/06 (2006.01) B01D 47/06 (2006.01) F25J 3/08 (2006.01)
Patent
CA 2022051
ABSTRACT The need to remove chlorinated solvents from vent streams containing the solvents prior to release into the environment is well recognized. Chlorinated solvents are removed from vapor vent streams containing the solvent, water and non-condensable vapors by contacting the vent stream with a liquid spray of precooled chlorinated solvent at a temperature less than the freezing point of water. The solid ice floats on the liquid chlorinated solvent and can be readily separated therefrom. The present process does not have the problems commonly encountered in known processes employing shell and tube heat exchanger or oil scrubbers. A common problem limiting the effectiveness of processes using shell and tube heat exchangers is the formation of ice on the condenser surfaces. Problems with processes using oil scrubbers include contamination between the oil and the chlorinated solvents. 38,023-F
Nankee Robert J.
Smart & Biggar
The Dow Chemical Company
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