Distillative separation of methane and carbon dioxide

Details Distillative separation of methane and carbon dioxide Distillative separation of methane and carbon dioxide

1981-10-01

1983-05-17

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

62 28, F25J 300

Patent

active

043838421

ABSTRACT:
An improvement in a Ryan/Holmes separation of methane from carbon dioxide is disclosed wherein the upper portion of a distillation column is operated at temperatures above the triple point of carbon dioxide, i.e., -70.degree. F., while still effectuating a separation of methane from carbon dioxide. This is achieved by increasing the amount of non-polar liquid agent added to the condenser of the column to an amount sufficient to maintain the condenser and all portions of the column at such temperatures.

REFERENCES:
patent: 3683634 (1972-08-01), Streich
patent: 4149864 (1979-04-01), Eakman et al.
patent: 4284423 (1981-08-01), Eakman et al.
patent: 4318723 (1982-03-01), Holmes et al.

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