Patent ID: 6080905
Filing Date: 2000-06-27
Classification: B01J,C07C,C10G

Abstract:
A process for purification of olefins which comprises:passing a gaseous mixture comprising an olefin of from 2 to about 8 carbon atoms, acetylenic impurities having the same or similar carbon content and optionally saturated hydrocarbon gases through a particulate bed of adsorbent comprising predominantly a support material having high surface area on which is dispersed at least one metallic element in the selected from the group consisting of chromium, iron, cobalt, nickel, ruthenium, palladium, and platinum, to effect, in the presence of an essentially dihydrogen-free atmosphere within the bed, selective and reversible adsorption and/or complexing of the contained acetylenic contaminants with the adsorbent, and thereby obtain purified effluent which contains less than about 1 parts per million by volume of the acetylenic impurities; andthereafter regenerating the resulting bed of adsorbent in the presence of a reducing gas comprising dihydrogen to effect release of the contained acetylenic impurities from the adsorbent.