Method and device for reducing nitrogen oxides produced by boiler combustion

A nitrogen oxide, boiler combustion technology, applied in the combustion method, combustion type, control combustion and other directions, can solve the problem of the emission reduction equipment not being able to quickly achieve the emission reduction effect, the use effect is not ideal, etc., to achieve strong universality, regulation The effect of fast process and short adjustment cycle

Active Publication Date: 2019-04-12
XINAO SHUNENG TECH CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for reducing nitrogen oxides produced by boiler combustion, so as to solve the technical problems in the prior art that the emission reduction effect cannot be quickly achieved by using emission reduction equipment, and the use effect is not ideal

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  • Method and device for reducing nitrogen oxides produced by boiler combustion
  • Method and device for reducing nitrogen oxides produced by boiler combustion
  • Method and device for reducing nitrogen oxides produced by boiler combustion

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Embodiment Construction

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] see figure 1 , a method for reducing nitrogen oxides produced by boiler combustion, comprising the steps of:

[0040] Step S10: Obtain the proportions of nitrogen oxides, combustible gases and combustion accelerants in the exhaust gas;

[0041] Step S20: According to the theoretical optimal ratio of the flammable gas and the combustion aid, it is judged that the adjustment object...

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Abstract

The invention relates to the technical field of boiler combustion control, and provides a method and device for reducing nitrogen oxides produced by boiler combustion. The method comprises the steps that the proportions of the nitrogen oxides, flammable gas and combustion-supporting agents in exhaust gas are obtained; according to the theoretical optimum ratio of the flammable gas to the combustion-supporting agents, an adjustment object is judged to be the combustible gas or the combustion-supporting agents; the gas feeding speed of the adjusting object is adjusted; the proportions of the nitrogen oxides, the combustible gas and the combustion-supporting agents in the exhaust gas are obtained again, and whether the proportion of the nitrogen oxides increases or not is judged; when the proportion of the nitrogen oxides increases, the gas feeding speed of the adjusting object is stopped; the gas feeding speed of the combustible gas or the combustion-supporting agents is adjusted in realtime, so that the proportion of the nitrogen oxides emitted from the exhaust gas is reduced to be the lowest, and the emission amount of the nitrogen oxides can be effectively reduced; and each boiler can obtain the best combustion mode in an operation state of each boiler, the fuel utilization rate is improved, so that high universality is achieved.

Description

technical field [0001] The invention relates to the technical field of boiler combustion control, in particular to a method and device for reducing nitrogen oxides produced by boiler combustion. Background technique [0002] Nitrogen oxides (NOx) produced during boiler combustion x , including NO, NO 2 and N 2 O) is a gas that is harmful to the environment and difficult to handle. It is basically considered to be one of the main sources of air pollution. a large proportion of emissions. N in nitrogen oxides 2 O may contribute to the greenhouse effect (e.g. increase in temperature), NO and NO 2 It is considered to be an important cause of ground-level ozone, photochemical smog and acid rain. Therefore, it is an important and arduous task to reduce the content of nitrogen oxides in boiler flue gas, thereby reducing the emission of harmful gases of nitrogen oxides. [0003] According to the formation mechanism of nitrogen oxides, it can be divided into thermal nitrogen o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/06F23N1/02
CPCF23G7/06F23N1/022
Inventor 王小娜
Owner XINAO SHUNENG TECH CO LTD
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