Production of acetylene

Details Production of acetylene Production of acetylene

1980-12-23

1983-01-04

Waltz, Thomas A.

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By plural serial diverse separations

585534, 585538, 585539, 585540, 585834, C07C 710

Patent

active

043673635

ABSTRACT:
The process relates to the recovering of essentially pure acetylene from the gaseous out-put stream from a coal to acetylene conversion process. A plasma arc generator or other high energy type reactor can be used for the conversion to coal. The gaseous out-put stream is initially treated in an acid gas removal stage by absorbing HCN and H.sub.2 S in an organic solvent such as N-methyl pyrrolidone and scrubbing with a caustic agent such as NaOH to remove CO.sub.2. In a second stage, the gaseous out-put stream is scrubbed with the organic solvent to provide a sweet gas treatment and remove essentially pure acetylene as a product. In a third stage, the second stage gases are first hydrogenated, then desulferized and then methanated. The out-put from the third stage is recycled to the coal to acetylene conversion process. In a fourth stage, the organic solvent from said second stage is refined and recycled to the first stage and/or second stage.

REFERENCES:
patent: 2964551 (1960-12-01), Woolcock
patent: 3234712 (1966-02-01), Lovett et al.
patent: 3471584 (1969-10-01), Platz et al.
patent: 3657375 (1972-04-01), Brunner et al.
patent: 3686344 (1972-08-01), Brunner et al.
patent: 4105888 (1978-08-01), Fey

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