PROCESS TO PURIFY ETHYLENE-CONTAINING OFF-GAS FEED STREAMS

摘要

A method for purification of ethylene-containing feed streams from steam crackers or fluid catalytic crackers (FCC), wherein the feed streams further comprises hydrogen, carbon monoxide, acetylenes, oxygen, nitrogen oxides, is disclosed. The method comprises contacting an ethylene-comprising gas stream with a Ru-based catalyst at reaction temperatures of at least 120°C. The process results in an ethylene- containing feed stream wherein the ethylene is essentially free of acetylenes, nitrogen oxides and oxygen. The purifying of the feed stream occurs with minimal loss of ethylene.