ENHANCED OLEFIN YIELD AND CATALYTIC PROCESS WITH DIOLEFINS

摘要

The invention provides a process for improving the conversion of a hydrocarbon feedstock to light olefins comprising mixing a hydrocarbon feedstock with a diolefin to form a mixture; and thereafter contracting the mixture with a zeolite cracking catalyst. Preferably the catalyst is contacted at a reaction temperature within the range of about 500 ~C to about 750 ~C and the feedstock flows at a weight hourly space velocity in the range of about 0.1 Hr-1 WHSV to about 100 Hr-1 WHSV. The diolefin can be a straight, branched, or cyclic hydrocarbon having at least two bonds. Preferably diolefin is a hydrocarbon of 4 to 20 carbons.