Fluid catalytic cracking process and apparatus for more effective regeneration of zeolite catalyst

Patent · Tue Mar 21 04:00:00 EST 1989

OSTI ID:5952220

Herbst, J A; Owen, H; Schipper, P H

A process is described for regenerating a spent fluid catalytic cracking catalyst stream, comprising the steps of: combining the spent catalyst stream with a first oxygen-containing stream to form a mixture, wherein the spent fluid catalytic cracking catalyst stream comprises, as a first catalyst component, particles of a cracking catalyst which requires relatively frequent regeneration and, as a second catalyst component, particles of a catalyst which requires less frequent regeneration than the first catalyst component, at least one physical characteristic of the particles of the first catalyst component differs sufficiently from at least one physical characteristics of the particles of the second catalyst component as to permit their separation; passing the mixture through a first regenerator riser at catalyst regeneration conditions; discharging the mixture from the riser; separating a first flue gas stream from the discharged mixture, and passing a remainder of the mixture to a first catalyst bed located in a lower portion of a second regenerator riser; and regenerating catalyst in the first bed by contacting the first bed with a second oxygen-containing stream.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4814068
• OSTI ID: 5952220
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
CHEMICAL REACTORS
CRACKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
PETROLEUM
PYROLYSIS
REGENERATION
THERMOCHEMICAL PROCESSES
ZEOLITES