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Recovery of Carbon Monoxide and Hydrogen From Hydrocarbon Streams

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
A process is described for the recovery of CO and optionally hydrogen from a stream containing CO, H2, methane, and hydrocarbons heavier than methane. The process is characterized by a two-stage removal (3, 6) of C2+ hydrocarbons from the feed. In a first step the feed gas (1) is separated (3) into a first C2+ depleted stream (5) and a first C2+ enriched stream (4). The first C2-enriched stream (4) is rectified (6) to produce a second C2+ depleted stream. The first and second C2+ depleted streams (5, 9) are fed to a cryogenic system (10) fro recovery of CO (12) and optionally hydrogen (11).
Foral, Michael J. (Aurora, IL), Reyneke, Rian (Katy, TX), Eng, Wayne W.Y. (League City, TX), Parker, Graeme (Falkirk, GB)
11/ 922,951
July 28, 2005
[0001] This invention was made with government support under United States Department of Energy Cooperative Agreement No. DE-FC07-01ID-14090.