Method for removing coke from particulate catalyst

Details Method for removing coke from particulate catalyst Method for removing coke from particulate catalyst

1980-06-27

1982-02-02

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

110345, 208113, 208147, 208164, 208174, 252411S, 252417, 422142, 422144, 422216, 422234, 423239, B01J 2938, B01J 2120, C10G 1105, C10G 1104

Patent

active

043138489

ABSTRACT:
Coke is removed from particulate catalyst by passing coke-containing catalyst downwardly through a regenerator without backmixing, in a countercurrent flow with respect to a regeneration gas having a limited free-oxygen content, so that nitrogen oxides are reacted to form free nitrogen in a substantially oxygen-free atmosphere in an intermediate level of the regenerator, and carbon monoxide formed in the intermediate level is burned in contact with coke-free catalyst with additional oxygen introduced into an upper level of the regenerator.

REFERENCES:
patent: 2613173 (1952-10-01), Kaasa
patent: 3902990 (1975-09-01), Luckenbach
patent: 3909392 (1975-09-01), Horecky, Jr. et al.
patent: 3926843 (1975-12-01), Owen
patent: 4064039 (1977-12-01), Penick
patent: 4115250 (1978-09-01), Flanders et al.
patent: 4180454 (1979-12-01), Luckenbach
patent: 4199435 (1980-04-01), Chessmore et al.

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