Catalytic cracking with reduced emissions of sulfur oxides

Details Catalytic cracking with reduced emissions of sulfur oxides Catalytic cracking with reduced emissions of sulfur oxides

1985-06-28

1989-06-13

Pal, Asok

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208122, 208124, C10G 1102, C10G 1104, C10G 1105, C10G 1118

Patent

active

048390267

ABSTRACT:
Sulfur oxides are removed at least partially from the gaseous regenerator effluent of a fluid catalytic cracking unit operated with feedstock containing sulfur compounds and converted to hydrogen sulfide in the cracking zone by associating sulfur oxides in the gas with at least one rare earth compound, preferably cerium or a rare earth mixture rich in cerium, supported on discrete particles of alumina. The alumina particles may be a component of particles of a composite fluid cracking catalyst or separate fluidizable entities other than cracking catalyst and physically admixed with the catalyst particles.

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