Ferromagnetic catalyst for treating nitric oxides in exhaust gas through selective catalytic reduction reaction and method thereof

Abstract

The invention discloses a method for treating nitric oxides in exhaust gas through a selective catalytic reduction reaction. The method comprises the following steps: preparing a catalytic agent froma ferromagnetic catalyst material so as to form a ferromagnetic catalyst; feeding a reducing agent into exhaust gas so as to conveniently remove nitric oxides in the exhaust gas; matching the ferromagnetic catalyst and the reducing agent, and treating a nitric oxide in the exhaust gas in a selective catalytic reduction reaction manner; transforming the nitric oxide in the exhaust gas into nitrogenand water vapor after the selective catalytic reduction reaction is completed. The treatment temperature of the ferromagnetic catalyst reduction reaction ranges from 50 DEG C and 450 DEG C.

Description

technical field [0001] The present invention relates to a catalyst and method for treating exhaust gas nitrogen oxides (NOx) by selective catalytic reduction reaction (Selective Catalytic Reduction reaction, SCR reaction); Ferrite catalyst and method thereof. Background technique [0002] Commonly used catalysts for selective catalyst reduction reactions, for example: China Taiwan Patent Publication No. I496740 "Preparation of bimetallic selective reduction activated carbon catalysts for nitrogen oxide reduction using iron, nickel, cobalt, manganese / aluminum and its preparation method" The patent for invention discloses a bimetallic selective reduction activated carbon catalyst for the reduction of nitrogen oxides prepared by iron, nickel, cobalt, manganese / aluminum and its preparation method. The bimetallic selective reduction activated carbon catalyst uses the coconut shell of agricultural waste as the raw material. These activators are evenly attached to the coconut she...

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Problems solved by technology

[0010] However, although the aforementioned patent announcements No. I460004, No. I453065 and No. I474859 have disclosed various catalyst structures, they still have various disadvantages (for example: the SCR catalyst reaction temperature is too high or the effective treatment temperature range is too narrow)

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