An apparatus for denitration of exhaust gas.

摘要

An apparatus for reducing the amount of nitrogen oxide comprises a device (30) for estimating the amount of generated NOx from information concerning a burning status of an incinerator (1), an ammonia injection device (13) injecting ammonia into said incinerator (1) according to a determined amount of injection a set value of NOx and the burning status information, a subtractor (16) for obtaining a difference between the set value of NOx and measured value of NOx, a feedback control device (31) for determining the injection amount of ammonia according to the difference output of said subtractor, and a parameter correction device (32) for obtaining an output for correcting an injection amount control parameter.