Refrigeration process with purge and recovery of refrigerant

Details Refrigeration process with purge and recovery of refrigerant Refrigeration process with purge and recovery of refrigerant

1990-03-05

1991-09-03

King, Lloyd L.

Refrigeration

Processes

Separating or preventing formation of undesirables

62475, F25B 4700

Patent

active

050441663

ABSTRACT:
A refrigeration process including a refrigeration cycle, and refrigerant purge and recovery operations is disclosed. The refrigeration cycle may be a vapor compression cycle or an absorption cycle, for example. A purge stream is withdrawn from the refrigeration cycle and subjected to treatment by means of a membrane separation unit. The purge-stream treatment operation produces an essentially pure refrigerant stream, suitable for return to the refrigeration cycle, and an air stream, clean enough for direct discharge to the atmosphere. The process is applicable to most refrigerants, but is particularly useful in minimizing atmospheric emissions of chlorofluorocarbons, such as CFC-11 and CFC-12.

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