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

1979-10-12

1981-11-17

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208113, 252417, 252454, 252455R, 252455Z, 252466PT, 423239, 423244, 423247, C10G 1118

Patent

active

043009972

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: 3118727 (1964-01-01), Cohn
patent: 4115250 (1978-09-01), Flanders et al.
patent: 4115251 (1978-09-01), Flanders et al.
patent: 4122039 (1978-10-01), Kobylinski et al.
patent: 4146463 (1979-03-01), Radford et al.
patent: 4153535 (1979-05-01), Vasalos et al.
patent: 4181600 (1980-01-01), Chester
patent: 4199435 (1980-04-01), Chessmore et al.
patent: 4222856 (1980-09-01), Hansel et al.
patent: 4222856 (1980-09-01), Hansel et al.

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