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Process for Recovering Ethylene From an Autothermal Cracking Reactor Effluent

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
The process of this invention represents an improved, low-energy method for recovering a purified ethylene product from the effluent of an autothermal cracking reactor. The process consists of a cracked gas chilling train, a front-end ethylene distributor, a demethanizer, and a C2 splitter. Hydrocarbons heavier than ethylene, including ethane, propylene, and propane are recycled in a single stream to the ATC reactor. Acetylene removal from the ethylene product can be accomplished either through a front-end hydrogenation unit or an acetylene extraction unit. This invention is particularly useful when the fresh hydrocarbon feed to the autothermal cracking reactor is ethane or a mixture of ethane and propane.
Reyneke, Rian (Katy, TX), Foral, Michael J. (Aurora, IL), Parker, Graeme (Falkirk, GB), Eng, Wayne W.Y. (League, TX)
11/ 922,028
July 28, 2005
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] This invention was made with government support under United States Department of Energy Cooperative Agreement No. DE-FC07-01ID 14090.