Amoco Corporation

Standard Oil Company (indiana)

John G Schwartz

John M Forgac

F William Hauschildt

Douglas N Rundell

James F Mosby

George P Quinn

Mark S Camp

Ralph J Bertolacini

George E Quinn

A catalytic cracking process is disclosed in which cracking is performed in a riser reactor, catalytically cracked product is substantially separated from the catalyst in a gross-cut separator downstream of the riser reactor, and the cracked product is quenched with an anhydrous quench liquid at a location immediately downstream of the oil outlet of the gross-cut separator.

Catalytic cracking with quenching

Effective quenching is provided in a catalytic cracking unit to increase product yield and decrease thermal cracking. For increased benefits, the quench is injected at special locations. In the illustrated embodiment, the quench is injected into the oil product immediately downstream of an external gross cut separator before the product enters a disengaging vessel.

Catalytic cracking unit with external cyclone and oil quench system

Effective quenching is provided in a catalytic cracking process to increase product yield and decrease thermal cracking. To this end, the quench is injected at special locations and a special quench is used. In the illustrated embodiment, the quench is injected into the oil product immediately downstream of an external gross cut separator before the product enters a disengaging vessel and the quench comprises cycle oil.

Quenching downstream of an external vapor catalyst separator

The method of converting at least 20% by weight of a vacuum gas oil fraction boiling above 650.degree. F. into products having a boiling point less than about 650.degree. F., which comprises hydrotreating a vacuum gas oil with a hydrodesulfurization catalyst comprising a Group VIB and Group VIII metal wherein an organic fluorine compound is added to the vacuum gas oil during hydrotreating and the vacuum gas oil is hydrotreated under hydrogen at a temperature of at least 740.degree. F.

Growing community of inventors

Naperville, IL, United States of America

John G Schwartz