| 摘要 |
PURPOSE:To improve durability of a denitration apparatus, by adding water and NH3 to an exhaust gas from a gas turbine and leading the mixed gas to a denitration apparatus and an exhaust gas boiler installed separately in the passage of the gas. CONSTITUTION:An exhaust gas from a gas turbine 1 is led to a pipe 3, mixed water water from a pipe 9 and NH3 from a pipe 10, then NOX is reduced in a denitration apparatus 7, and the then resulting gas is introduced into a gas boiler 8 and evaporated to be exhausted to air from the chimney 6. The amount of water supply is controlled according to load-change of a gas turbine 1 and temperature is kept constant. Due to separation of the denitration apparatus 7 from the exhaust gas boiler 8, installation and maintenance of the denitration apparatus become easy and durability of the apparatus is improved as compared to the case of a denitration apparatus being set in a waste gas boiler. |
