Hydrogen-producing hydrocarbon conversion process.

摘要

A hydrogen-producing hydrocarbon conversion process such as dehydrocyclodimerization with improved treatment of the reaction zone effluent is disclosed. A portion of a C3 or C4 hydrocarbon 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.