Patent ID: 8487150

Claim:
A process for hydrogenating butadiyne to butane over a catalyst which comprises at least one platinum group metal on an inorganic metal oxide as a support, said process comprising: fully hydrogenating butadiyne, via a one-stage process, over the catalyst, at a pressure of from 1 to 40 bar, at a temperature of from 0 to 100° C., and with a liquid circulation system with a weight ratio of recycle stream to feed stream of from 2 to 20, wherein from 0.05 to 5% by weight, based on the total weight of the catalyst, of the platinum group metal is present on the support, the support has a porosity of from 0.2 to 1.0 ml/g, the hydrogenation is performed on a stream obtained from gas scrubbing of acetylene, the stream comprises an organic solvent other than hydrocarbons, the stream comprises up to 20% by weight of vinylacetylene and up to 10% by weight of acetylene, based on the weight of butadiyne, and the stream comprises from 1 to 10% by weight of butadiyne, based on the total weight of the stream.