煤粉燃烧器氮氧化污染物减排方法研究

Study on Reduction Method of Nitrogen Oxidation Pollutants in Pulverized Coal Burner

煤粉燃烧会产生大量的氮氧化污染物,对环境造成巨大污染,煤粉燃烧分解中,采用煤焦脱硝的机理能有效降低氮氧化物的排放量,结合煤焦表面化学吸附方法,提高煤粉的燃烧值,采用催化还原法进行煤粉燃烧的还原脱销,在脱硝过程中不用加入催化剂,采取多点BET法降低O2对碳的消耗,结合烟道的火焰控制方法精确控制煤粉燃烧器的进气浓度,降低C-NO起始反应温度,抑制氮氧化污染物的产生,促进烟煤焦脱硝过程中C对NO的化合反应,通过恒温稳态反应方法,进行NO出口浓度控制,从而有效实现污染物的减排处理。

Pulverized coal combustion will produce a large number of nitrogen oxidation pollutants,causing huge pollution to the environment. In pulverized coal combustion decomposition,the mechanism of coal char denitrification can effectively reduce the emissions of nitrogen oxides. Combined with the method of chemical adsorption on the surface of char,the combustion value of pulverized coal was improved,and the reduction and delamination of pulverized coal combustion was carried out by catalytic reduction method,and no catalyst was added in the process of denitrification. The multipoint BET method was adopted to reduce the carbon consumption of O2 and the flame control method of flue gas was used to accurately control the inlet concentration of pulverized coal burner and to reduce the initial reaction temperature of C-NO. The production of nitrogen oxidation pollutants was inhibited and the reaction of C to no was promoted in the denitrification process of soak-coal char. The outlet concentration of NO was controlled by the method of steady state reaction at constant temperature. The experimental results show that this method can effectively reduce the emissions of nitrogen oxidation pollutants from pulverized coal burners.