Method of reducing oxides of nitrogen concentration in regenerat

Details Method of reducing oxides of nitrogen concentration in regenerat Method of reducing oxides of nitrogen concentration in regenerat

1979-08-20

1980-11-25

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 52CT, 208121, 208DIG1, 208164, 25211R, 252417, 423235, 423246, C10G 1102, C10G 1118

Patent

active

042357047

ABSTRACT:
A method for controlling the oxides of nitrogen concentration in the exit flue gas from the regeneration zone of a catalytic cracking unit employing carbon monoxide combustion promoters which comprises monitoring the oxides of nitrogen concentration in the exit flue gas and adjusting the concentration of combustion promoter present in the regeneration zone to maintain the oxides of nitrogen concentration below a predetermined limit.

REFERENCES:
patent: 4064037 (1977-12-01), Graven et al.
patent: 4088568 (1978-05-01), Schwartz
patent: 4093535 (1978-06-01), Schwartz
patent: 4093537 (1978-06-01), Gross et al.
patent: 4108795 (1978-08-01), Hemler et al.
patent: 4118339 (1978-10-01), Latos
patent: 4171286 (1978-11-01), Dight et al.
"Optimal Control of FCC Process" Automatica, vol. 6, pp. 693-703 (1970).

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