METHOD AND DEVICE FOR REDUCING THE NOX AND N2O OF GASES

摘要

A method and an apparatus for reducing nitrogen and nitrogen oxide gases are provided to reduce simultaneously nitrogen and nitrogen oxide gases exhausted from a greenhouse gas-emitting source by using a Pd/Fe/MOR or Fe/HNZ catalyst. An apparatus for reducing nitrogen and nitrogen oxide gases comprises: a heat exchanger(100) for preventing deterioration of temperature of NOx and N2O gases exhausted at high temperatures; a reductant feeder(110) installed on a connecting pipe(10) in rear of the heat exchanger to add a reductant to the heat exchanger; and a catalytic reaction tower(120) installed in rear of the reductant feeder to react a catalyst with a target material. The reductant comprises ammonia and methane mixed at a ratio of 1:0.2 to 1:3. The catalytic reaction tower contains a Pd/Fe/MOR or Fe/HNZ catalyst comprising at least one zeolite carrier which is used at an operating spatial speed of 2,000 to 30,000 h^-1 in a temperature range of 300 to 450°C.