Process for concurrent selective hydrogenation of acetylenes and

Details Process for concurrent selective hydrogenation of acetylenes and Process for concurrent selective hydrogenation of acetylenes and

1996-09-23

1999-03-02

Teskin, Fred

Chemistry of hydrocarbon compounds

Adding hydrogen to unsaturated bond of hydrocarbon, i.e.,...

Hydrocarbon is contaminant in desired hydrocarbon

585259, 585275, 585277, 585841, 203 29, 203 32, 203DIG6, C07C 508, B01D 334

Patent

active

058773630

ABSTRACT:
A process for the removal of vinylacetylene, ethylacetylene and 1,2-butadiene from C.sub.4 aliphatic hydrocarbon streams comprising, concurrently: (1) feeding hydrogen and a hydrocarbon stream comprising C.sub.4 hydrocarbons including butanes, butenes, butadienes and vinylacetylene to a distillation column reactor containing a bed comprising a hydrogenation catalyst of the type characterized by platinum, palladium or rhodium which is prepared as a distillation structure to selectively hydrogenate a portion of the vinylacetylene and the 1,2-butadiene and (2) fractionally distilling the reaction mixture to remove a heavier fraction and removing a fraction overhead comprising substantially all of the C.sub.4.

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