Catalytic cracking with reduced emission of noxious gas

Details Catalytic cracking with reduced emission of noxious gas Catalytic cracking with reduced emission of noxious gas

1980-12-04

1982-09-21

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

B01J 2912

Patent

active

043506151

ABSTRACT:
Small amounts of a promoter comprising palladium and ruthenium enhance the combustion of carbon monoxide within the regeneration zone of a catalytic cracking unit without simultaneously causing the formation of excessive amounts of nitrogen oxides. The palladium-ruthenium promoter also enhances the capture of sulfur oxides by suitable absorbents within the regeneration zone of a catalytic cracking unit without causing the formation of excessive amounts of nitrogen oxides. The ratio by weight on an elemental metal basis of palladium to ruthenium is from about 0.1 to about 10.

REFERENCES:
patent: 4252686 (1981-02-01), Mooi
patent: 4259176 (1981-03-01), Blanton et al.

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