Liquid/gas carbon dioxide evaporator

Details Liquid/gas carbon dioxide evaporator Liquid/gas carbon dioxide evaporator

1984-01-06

1986-02-25

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 37, 62 54, F25J 100

Patent

active

045727287

ABSTRACT:
There is provided a process for liquefying a flow of relatively impure carbon dioxide gas in conjunction with providing a carbonation flow of relatively pure carbon dioxide gas, which includes the steps of condensing a source flow of carbon dioxide gas, containing contaminating gas having a substantially lower condensation temperature, by passing the source flow in heat exchange relation with a coolant flow of relatively pure carbon dioxide liquid while flashing the coolant flow at a selectively reduced pressure to maintain said heat exchange relation; then separating contaminating gases from the condensed source flow; and then merging the condensed source flow into said liquid coolant flow. Apparatus for practicing the process is also provided.

REFERENCES:
patent: 2608838 (1952-09-01), Rupp
patent: 3660985 (1972-05-01), Tyree

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