Method and apparatus for controlling denitration of exhaust gas.

摘要

An apparatus for reducing the amount of nitrogen oxide comprises a device (20) for estimating the amount of generated NO x from information concerning a burning status of an incinerator, a feedforward control device (19) for determining an injection amount of ammonia according to an estimated amount of generated NO x, a set value of NO x and the burning status information, a subtractor (16) for obtaining a difference between the set value of NO x and measured value of NO x, a feedback control device (17) for determining the injection amount of ammonia according to the difference output of said subtractor, and an adder (18) for controlling an ammonia injection section according to the outputs of said feedforward and feedback control circuits.