Title: Temporary shutdown of co-combustion devices

Abstract: A metal combustion promoter is introduced into the circulating inventory of catalyst in the catalytic cracking process to temporarily change the operating mode of the regenerator and decrease the CO content of the flue gas, thus permitting temporary shutdown of the CO-boiler or CO-incinerator, while continuing operation of the catalytic cracking process. The metal combustion promoters are compounds of platinum, iridium, osmium, palladium, rhodium, ruthenium, or rhenium. The described technique permits rapid shutdown and minimizes the time of operation outside of compliance with local or other ordinances.

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Inventors: Graven, Richard G. (Westmont, NJ, US)
Sailor, Robert A. (Cinnaminson, NJ, US)

Application Number: 832140
Filing Date: 1977-09-12
Publication_date: 1979-03-27
Assignee: Mobil Oil Corporation (New York, NY)
Primary Class(es): 208/120.05 208/113, 208/120.35, 208/121, 208/164, 502/42
Other Classes:
US Patent Ref:

2436927	Mar, 1948	Kassel	252/417.
3364136	Jan, 1968	Chen et al.	208/120.
3650990	Mar, 1972	Frilette et al.	252/455.
3696025	Oct, 1972	Chessmore et al.	208/113.
3788977	Jan, 1974	Dolbear et al.	208/120.
3849291	Nov, 1974	Owen et al.	208/78.
4006075	Feb, 1977	Luckenbach	208/164.
4064039	Dec, 1977	Penick	208/160.
4072600	Feb, 1978	Schwartz	208/120.

Other Refs:
Primary Examiner: Gantz, Delbert E.
Assistant Examiner: Schmitkons, G. E.
Attorney: Huggett; Charles A., Barclay; Raymond W., Szatkowski; Thomas S.