Distillative separation of carbon dioxide from hydrogen sulfide

Details Distillative separation of carbon dioxide from hydrogen sulfide Distillative separation of carbon dioxide from hydrogen sulfide

1981-07-20

1983-05-17

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 20, 55 68, 55 73, 423226, F25J 300

Patent

active

043838413

ABSTRACT:
A distillative separation of carbon dioxide and hydrogen sulfide is improved by adding a C.sub.3 -C.sub.6 alkane, a mixture of C.sub.3 -C.sub.6 alkanes, SO.sub.2 or SO.sub.3 to a distillation column to increase the relative volatility of carbon dioxide to hydrogen sulfide. Increasing the relative volatility facilitates the separation.

REFERENCES:
patent: 4293322 (1981-10-01), Ryan et al.

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