In situ mitigation of coke buildup in porous catalysts by pretre

Details In situ mitigation of coke buildup in porous catalysts by pretre In situ mitigation of coke buildup in porous catalysts by pretre

1996-04-18

1997-11-25

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With prevention or removal of deleterious carbon...

208 83, 208 91, 585820, 585823, 585824, 585450, C10G 916

Patent

active

056908091

ABSTRACT:
An improved process is provided for in situ mitigation of coke buildup and porous catalyst used for the processing of hydrocarbon feed stocks. The process exhibits improved catalyst activity over extended periods and the process comprises the pretreatment of hydrocarbon feed stocks to reduce impurities in the feed stocks in the form of peroxides and oxygen compounds that promote the formation of coke precursors, which precursors are typically in the form of olefinic oligomers. The process includes contacting the pretreated feed stream with a suitable catalyst under sub-critical, near-critical and supercritical conditions.

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