Product recovery method for dehydrocyclodimerization process
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United States of America Patent
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-
Jan 6, 1987
Grant Date -
N/A
app pub date -
Nov 21, 1985
filing date -
Nov 21, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process flow for hydrogen-producing processes such as reforming or dehydrocyclodimerization is disclosed. A portion of a C.sub.3 or C.sub.4 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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