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Low capital implementation of distributed distillation in ethylene recovery

United States Patent

October 31, 2006
View the Complete Patent at the US Patent & Trademark Office
An apparatus for recovering ethylene from a hydrocarbon feed stream, where the apparatus is a single distillation column pressure shell encasing an upper region and a lower region. The upper region houses an ethylene distributor rectifying section and the lower region houses a C2 distributor section and an ethylene distributor stripping section. Vapor passes from the lower region into the upper region, and liquid passes from the upper region to the lower region. The process for recovering the ethylene is also disclosed. The hydrocarbon feed stream is introduced into the C2 distributor section, and after a series of stripping and refluxing steps, distinct hydrocarbon products are recovered from the C2 distributor section, the ethylene distributor stripping section, and the ethylene distributor rectifying section, respectively.
Reyneke; Rian (Katy, TX), Foral; Michael J. (Aurora, IL), Lee; Guang-Chung (Houston, TX)
BP Corporation North America Inc. (Warrenville, IL)
10/ 393,029
March 20, 2003
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under United States Department of Energy Cooperative Agreement No. DE-FC07-01ID14090.