Method of predicting and controlling harmful oxide and apparatus

Details Method of predicting and controlling harmful oxide and apparatus Method of predicting and controlling harmful oxide and apparatus

1996-12-30

2000-09-26

Dunn, Tom

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

42324401, 42324408, C01B 2100

Patent

active

061239100

ABSTRACT:
The present invention provides a method and an apparatus for predicting and calculating an amount of harmful oxide such as NOx contained in an exhaust gas from a reference concentration of harmful oxide, which is previously determined by a type of fuel supplied to a fluidized bed combustor, an amount of change of an air ratio and an amount of change of a gas residence time to the conditions of a specific air ratio and gas residence time in the combustor, and injecting a treatment agent such as NH.sub.3 in an amount optimum to the predicted amount into an exhaust gas. With this arrangement, an amount of harmful oxide in the exhaust gas can be securely lowered to a target value.

REFERENCES:
patent: 4473537 (1984-09-01), Ford, Jr. et al.
patent: 5047220 (1991-09-01), Polcer
patent: 5237939 (1993-08-01), Spokoyny et al.

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