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

1980-04-23

1981-10-06

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

62 20, 55 68, 55 73, 423220, 423226, F25J 300

Patent

active

042933226

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: 3074245 (1963-01-01), Becker
patent: 3320753 (1967-05-01), Bray et al.
patent: 3417572 (1968-12-01), Pryor
patent: 3498067 (1970-03-01), Ranke
patent: 3718006 (1973-02-01), Ranke et al.
patent: 4097250 (1978-06-01), Pagani et al.

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