Patent ID: 9676685
Date: 2017-06-13
CPC Classifications: C07C,C10G

Claim:
1. A process for hydrogenating a diolefin, the process comprising: contacting a liquid phase olefin stream containing from 200 ppm to 2 wt. % 1,3-butadiene, based on the total weight of the olefin stream, with a single catalyst and hydrogen in the substantial absence of carbon monoxide, wherein the contacting is conducted: (a) such that the hydrogen is fed into the process at at least 2 different hydrogen feed points, and the amount of hydrogen fed to at least one feed point is a substoichiometric amount, relative to the amount of the butadiene, and (b) under hydrogenation conditions sufficient to reduce the concentration of 1,3-butadiene to less than 100 ppm in at least one effluent stream of the process, wherein the feed rate of hydrogen is the same at the substoichiometric hydrogen feed point and at least one additional hydrogen feed point.