| 摘要 |
PURPOSE:To simplifying a NH3 injection nozzle so as to improve denitration capability, by injecting NH3 to an exhaust gas from a diesel engine and leading the mixed gas to a denitration apparatus through a pressure-booster fan. CONSTITUTION:An exhaust gas from a diesel engine 1 is led to an exhaust gas line 3, mixed with NH3 fed from a injection nozzle 12, the resulting gas mixture, passing a pressure-booster fun 4, is introduced into a dinitration apparatus 5, and NOX of the resulting gas is reduced with a catalyst. The exhaust gas and NH3 are mixed sufficiently by the fun 4 when passing, therefore, denitration efficiency is improved without using a special NH3 injection nozzle. In case of an exhaust gas temperature being low and containing much soot and dust, a three way type damper 10 is opened so as to lead a waste gas to a by-pass duct 11. |
