Method of reducing NO.sub.x component of flue gas in heating cok

Details Method of reducing NO.sub.x component of flue gas in heating cok Method of reducing NO.sub.x component of flue gas in heating cok

1985-11-08

1987-11-03

Richman, Barry S.

Distillation: processes, thermolytic

Miscellaneous

202139, 202142, C10B 504, C10B 2106, C10B 2118, C10B 2124

Patent

active

047041951

ABSTRACT:
In regenerative coking ovens having vertical heating flues cooperating in pairs, high level and low level combustion stages and means arranged at the bottoms of respective heating flues to recirculate the flue gas, the following measures insure a substantially reduced generation of NO.sub.x contents in the flue gas: the recirculation current rate is between 20% and 50%, the combustion stage ratio is between 40% and 70% and the second combustion stage is arranged between 35% and 55% of the height of the heating flue.

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patent: 4405587 (1983-09-01), McGill et al.
patent: 4416732 (1983-11-01), Gernhardt et al.

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