| 摘要 |
<p>PURPOSE:To eliminate an ammonia removing apparatus and to reduce the running cost of an ammonia removing treatment, by decomposing and removing ammonium salt by introducing flyash adhered to ammonium salt collected by a dust collector into a coal burning boiler. CONSTITUTION:In the denitration of exhaust gas of a coal burning boiler 1 by an NH3 catalytic decomposition system, flyash which has passed through a dust collector and not collected therein is passed through a denitrification apparatus 2 and, while cooled by an air precooler 3, collected by a low temp. EP4 in a state adhered with NH4-salt. This flyash adhered with NH4-salt is thrown into the coal burning boiler to carry out ammonium removing treatment by the heat of the coal burning boiler 1 and flyash free from NH4-salt is recovered by the dust collector 10.</p> |
