Stone & Webster Process Technology, Inc.

Other

Warren S Letzsch

Robert R Dean

Jean L Mauleon

Gary Jackson

Ed Yuan

John Hood

Jim Evans

The present invention provides a catalytic cracking reactor system and process in which a riser reactor is configured to have two sections of different radii in order to produced improved selectivity to propene and butenes as products.

Deep catalytic cracking process

The present invention provides an improved separator for use in hydrocarbon cracking process.

Riser termination device

A process and an apparatus for catalytic cracking a hydrocarbon feed to lighter hydrocarbon employing a catalyst cooler in flow communication with a catalyst stripper is disclosed.

Process and apparatus for controlling catalyst temperature in a catalyst stripper

A process for converting residual oil comprising vacuum bottoms in the presence of a cracking catalyst of high surface area and comprising an ultrastable zeolite is described. More particularly, a conversion process particularly contributing to producing cycle oil and gasoline boiling range products with reduced carbon deposition in combination with a relatively high regeneration temperature operation of at least 1350.degree. F. and above, and a short contact time riser hydrocarbon conversion operation contributing to reducing slurry oil product in favor of lower boiling products is described. A fluid cracking catalyst comprising a special ultrastable crystalline zeolite of high silica to alumina ratio provides hydrothermal stability of acceptable tolerance in the environment employed.

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Ellicott City, MD, United States of America

Warren S Letzsch