Title:
RESIDUE RECYCLE-HIGH ETHANE RECOVERY PROCESS
Document Type and Number:
WIPO Patent Application WO2004080936
Kind Code:
B1
Abstract:
A process and apparatus to increase the recovery of ethane, propane, and heavier compounds from a hydrocarbon gas stream is provided. The process can be configured to recover ethane and heavier compounds or propane and heavier compounds, depending upon the market conditions. The process utilizes an additional reflux stream to the absorber column that is lean in ethane and propane compared to the deethanizer overhead. The additional reflux stream is taken as a side stream of the residue gas stream that is cooled, condensed, and then fed at the top of the absorber to enhanced C3+ recovery. The additional lean reflux stream can also be taken as a side stream of the first vapor stream from the cold separator.
Inventors:
PATEL SANJIV N (US)
FOGLIETTA JORGE H (US)
FOGLIETTA JORGE H (US)
Application Number:
PCT/US2004/006418
Publication Date:
April 21, 2005
Filing Date:
March 03, 2004
Export Citation:
Assignee:
ABB LUMMUS GLOBAL INC (US)
PATEL SANJIV N (US)
FOGLIETTA JORGE H (US)
PATEL SANJIV N (US)
FOGLIETTA JORGE H (US)
International Classes:
C10L3/10; F25J3/02; (IPC1-7): C07C7/09; C07C9/06
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