B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/396, 260/663.
B01D 53/34 (2006.01) F25J 3/08 (2006.01)
Patent
CA 1165781
Abstract of the Invention Apparatus for recovering chlorocarbons from a vent gas stream which additionally contains a halogen, including an inlet means connected to a source of the gas stream and a heat exchanger means for receiving the stream from the inlet means. The heat exchange means has a cooling capacity sufficient to reduce the temperature of the stream to less than about -60°F at a pressure of at least 60 psig. Finally, separator means are provided for receiving the stream at the reduced temperature and include means for separating the liquid from the vapor at that point. The apparatus and the method of using the same is particularly suited for use with vent gas streams contain- ing at least 1000 ppm of carbon tetrachloride and approxi- mately 0.2 to 20% of a halogen, particularly chlorine, based upon the weight of the carbon tetrachloride. Pre- ferred operating conditions are from about -60°F to about -70°F at a pressure ranging from 80 to 90 psig.
389491
Atochem North America Inc.
Borden Ladner Gervais Llp
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