Extractive distillation process for separating difluoromethane a

Details Extractive distillation process for separating difluoromethane a Extractive distillation process for separating difluoromethane a

1996-07-12

2000-12-05

Bhat, Nina

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 99, 570178, B01D 334, C07C 1738

Patent

active

061561614

ABSTRACT:
A process is disclosed for removing chloropentafluoroethane (CFC-115) from a mixture comprising CFC-115, difluoromethane (HFC-32), pentafluoroethane (HFC-125), or from mixtures of these compounds, by azeotropic or extractive distillation.

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patent: 5421964 (1995-06-01), Mahler et al.
patent: 5453551 (1995-09-01), Lacroix et al.
patent: 5585529 (1996-12-01), Corbin et al.

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