煤层燃过程中热解气燃烧氮氧化物排放实验

我国大气中的氮氧化物污染日益严重,燃煤是大气中氮氧化物的主要来源之一。为研究燃煤过程中氮氧化物的排放规律,设计了双层固定床反应器,对煤燃烧产生的热解气和焦炭的燃烧情况分别进行研究。利用实验研究分析煤燃烧时煤中氮元素的分配、热解气析出特性及热解气燃烧时的氮氧化物排放规律。结果表明:煤热解过程中进入热解气和留在焦炭内的N分别为38%和62%。实验结果为分析煤炭层燃过程中NOx排放规律奠定了基础。

Experimental NO emission in combustion of coal pyrolysis gas

China is suffering from increasingly serious nitrogen oxides(NOx) pollution,most of which is produced by coal combustion.The attempt to investigate the NOx producing mechanisms of coal burning has led to the dual-bed model reactor capable of respective simulation of the pyrolysis gas combustion and coke combustion.This paper presents the research on the distribution of N in coal pyrolysis process and the NOx emission of pyrolysis gas combustion.Research contributes to probing into the NO emission mechanisms of coal burn in fixed bed boiler.