NOX REDUCING DEVICE USING CATALYST-ELECTRIC HEATER
摘要
<p>A device for reducing nitrogen oxides whereby quantity of nitrogen oxides can be lowered by reduction using a electric heater with reduction catalyst directly coated on the surface thereof to activate the catalyst in a low-temperature range of exhaust gas is disclosed. The device for reducing nitrogen oxides of the present invention comprises a catalyst-electric heater installed in an exhaust pipe and coated with reduction catalyst; a reductant injection unit which is installed forward of the electric heater to supply reductant; and a slip carrier which is installed rearward of the catalyst-electric heater to remove unreacted reductant that has passed through the catalyst-electric heater.</p>
