Production of purified synthesis gas and carbon monoxide

Details Production of purified synthesis gas and carbon monoxide Production of purified synthesis gas and carbon monoxide

Filed on

1977-06-28

Date issued

1978-03-28

Examiner

Lindsay, Jr., Robert L.

Patent Class

Gas: heating and illuminating

SubClass

Processes

SubSubClass

Fuel mixtures

Other Related Categories

48202, 48215, 252373, 2604495, 423415A, C10J 300

Type

Patent

Status

active

Patent number

040812537

Description

ABSTRACT:
A continuous process for simultaneously producing (1) a stream of purified synthesis gas having a controlled mole ratio H.sub.2 /CO, and (2) a separate stream of CO-rich gas. Methanol may be synthesized from the purified synthesis gas and reacted with CO to produce acetic acid. In the process, raw synthesis gas from a noncatalytic partial-oxidation gas generator is cleaned (if necessary), cooled, and dehumidified. At least a portion of the resulting gas stream is then partially purified by removing H.sub.2 S and COS if present, and at least a portion of the CO.sub.2 in a first gas purification zone. The remainder of the clean dehumidified gas stream if any, by-passes the first gas purification zone. Partially purified gas from the first gas purification zone is introduced into a second gas-purification or separation zone and at least a portion of the remainder if any, by-passes the second gas purification zone. A product stream of CO-rich gas and a separate stream of H.sub.2 -rich gas is removed from the second gas purification zone. The product stream of purified synthesis gas may then be produced by mixing together at least a portion of said H.sub.2 -rich gas stream with at least a portion of at least one of the following by-pass gas streams; (a) gas processed in the first gas purification zone that by-passes the second gas purification zone; (b) clean dehumidified gas that by-passes the first gas purification zone.

REFERENCES:
patent: 3715195 (1973-02-01), Tassoney et al.
patent: 3920717 (1975-11-01), Marion

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