Distillation: processes – separatory – Addition of material to distilland to inhibit or prevent...
Patent
1995-08-01
1997-11-04
Manoharan, Virginia
Distillation: processes, separatory
Addition of material to distilland to inhibit or prevent...
203 99, 203DIG19, 203 2, 570178, B01D 334, C07C 1738
Patent
active
056835540
ABSTRACT:
Separation of 1,1-dichloro-1-fluoroethane (141b) from lower boiling components contained in a crude 141b feed stream mixture by adding the feed stream mixture, and, based upon the weight of 141b in the feed stream mixture, between 100 and 300 ppm of a component that will inhibit formation of 1,1-difluoro-1-chloroethane into a feed line of a distillation column operated at between 3 and 165 psig pressure with a temperature between 100.degree. F. and 250.degree. F. in the bottom reboiler section of the column.
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U.S. Patent Application, IR 3309A, "Inhibition of 141B Decomposition", *corresponds to 2689885, France.
Brooks Wayne E.
Jolley Craig
Elf Atochem North America Inc.
Manoharan Virginia
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