Process for reducing FCC transfer line coking

Details Process for reducing FCC transfer line coking Process for reducing FCC transfer line coking

1991-02-04

1993-11-02

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With prevention or removal of deleterious carbon...

208 48R, 208348, 208106, 208 47, 208153, 208163, C10G 916

Patent

active

052581136

ABSTRACT:
Coke formation/deposition within and downstream of catalytic cracking reactors is suppressed by adding a coke suppressing additive to the cracking reactor and/or cracked product vapor. Free radical inhibitors, such as oxygenates, are preferred. The additive addition rate is preferably controlled based on temperature of regenerated catalyst, or a direct or indirect measurement of coke accumulation on the transfer line between the cracking reactor and the main fractionator.

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