Method for reducing nitrogen oxides in flue gas of medium and small sized industrial coal burning boiler through combination with wet-method sulfur removing technology
A technology for coal-fired boilers and flue gas, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of low solubility and difficult removal of nitrogen oxides, and achieve high removal efficiency and equipment renovation investment. Small, low operating costs
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[0061] The present invention will be described below through specific embodiments, but the present invention is not limited thereto.
[0062] The experimental methods used in the following examples are conventional methods unless otherwise specified; the reagents and materials used in the following examples, unless otherwise specified, can be obtained from commercial sources.
[0063] The technical solution of the present invention is to provide a method for removing nitrogen oxides in flue gas of coal-fired boilers by using an oxidation method combined with a two-alkali desulfurization technology.
[0064] First of all, low nitrogen oxides (NO X ) Burn to reduce NO X Produce the total amount, and then introduce the produced flue gas into the tandem tower purification system. After dust removal and primary desulfurization pretreatment, the NO in the flue gas is oxidized to NO under the action of an oxidant 2 , Nitrogen oxide and sulfur dioxide are integrated to oxidize and absorb, and...
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