Process for recovering methylacetylene and/or propadiene

Details Process for recovering methylacetylene and/or propadiene Process for recovering methylacetylene and/or propadiene

1986-11-07

1987-10-20

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 65, 55 84, B01D 5314

Patent

active

047011904

ABSTRACT:
For recovering methylacetylene and/or propadiene from a C.sub.3 -containing feed stream. The feed stream is treated with a first stream of physical solvent, e.g. DMF, under an elevated pressure to absorb the C.sub.3 -acetylenes. Propadiene is then selectively stripped from the loaded, first solvent stream and rescrubbed with a second solvent stream under a lower pressure. A residual gaseous stream may then be stripped from the second solvent, which gas may be further rescrubbed with a third stream of solvent to obtain an additional propadiene. Methylacetylene in the first solvent, as well as propadiene in the second or third solvent stream may then be recovered separately or together.

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