Product recovery method for dehydrocyclodimerization process

Details Product recovery method for dehydrocyclodimerization process Product recovery method for dehydrocyclodimerization process

C - Chemistry, Metallurgy

07

C

162/110, 260/688

C07C 2/76 (2006.01) C07C 7/04 (2006.01) C07C 15/02 (2006.01)

Patent

CA 1271201

"PRODUCT RECOVERY IN A DEHYDROCYCLODIMERIZATION PROCESS" ABSTRACT A process flow for hydrogen-producing processes such as reforming or dehydrocyclodimerization is disclosed. A portion of a C3 or C4 feed stream is flashed to provide reflux cooling for a product recovery fractionation column. The cool overhead of this column and a second portion of the feed stream are used to cool the still uncondensed portion of the partially condensed reaction zone effluent stream prior to passage of this uncondensed material into a final low temperature separation stage. A second feature is the reboiling of a fractionation column with hot compressed gas to perform interstage cooling in the product recovery compression section.

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