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CAPLUS COPYRIGHT 2014 ACS
||A process for producing propylene and aromatics from butenes by metathesis and aromatization
||Van Hal, Japp W.; Stevenson, Scott A.; Allman, Jim; Sullivan, David L.; Conant, Travis
||Saudi Basic Industries Corporation, Saudi Arabia
||PCT Int. Appl., 22pp.; Chemical Indexing Equivalent to 155:563442 (US) CODEN: PIXXD2
The invention is for a process for producing propylene and hexene (along with ethylene, pentenes, product butenes, heptenes and octenes) by metathesis from butenes (iso-, 1- and cis and trans 2-) and pentenes and then aromatizing the hexenes (along with higher olefins, such as heptenes and octenes) to benzene (along with toluene, xylenes, ethylbenzene and styrene). Since the desired products of the metathesis reaction are propylene and hexene, the feed to the metathesis reaction has a molar ratio for 1-butene:2-butene which favors prodn. of propylene and 3-hexene with the concn. of hexenes and higher olefins in the metathesis product being up to 30 mol%. An isomerization reactor may be used to obtain the desired molar ratio of 1-butene:2-butene for the feed compn. into the metathesis reactor. After the metathesis reaction, of hexene and higher olefins are sepd. for aromatization to benzene and other aroms.
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