Dual dephlegmator process to separate and purify syngas mixtures

Details Dual dephlegmator process to separate and purify syngas mixtures Dual dephlegmator process to separate and purify syngas mixtures

1984-07-12

1985-06-25

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 34, F25J 302

Patent

active

045251878

ABSTRACT:
The present invention involves a process for separating and purifying gas mixtures comprising H.sub.2, CO and C.sub.1 + hydrocarbons. The gas is initially cooled in a high pressure dephlegmator to condense and rectify the C.sub.1 + hydrocarbons leaving a combined H.sub.2 --CO vapor. The condensed C.sub.1 + hydrocarbons are partially vaporized and subsequently recondensed in a second, low pressure dephlegmator with further rectification. This process yields H.sub.2 --CO vapor streams and a C.sub.1 + liquid hydrocarbon product at purities suitable for subsequent commercial operations.

REFERENCES:
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patent: 4270939 (1981-06-01), Rowles et al.
patent: 4338107 (1982-07-01), Swallow
patent: 4443238 (1984-04-01), Beddome et al.

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