Study on combustion technology of pulverized coal mixed with hydrogen
The aim of this paper is to investigate the hydrogen-doped combustion of pulverized coal as a pathway op-tion to reduce carbon emissions from coal combustion,and focus on its combustion and NO emission characteristics,as well as the effect of air classification on NO emission control.In this work,the experimental study of hydrogen do-ped combustion of pulverized coal was carried out on a 50 kW downward combustion test furnace capable of self-sus-tained pulverized coal combustion.Shenfu bituminous coal was selected as the test coal,and the tests were carried out at different hydrogen doping ratios and air classification levels to investigate the NO generation,temperature changes in the main combustion zone,and the emission products along the combustion process.The results show that hydrogen doping does not cause an increase in NO emissions while reducing carbon,and when the proportion of hydrogen do-ping is 50％,the NO emission concentration decreases to 27.55％.This effect is more significant in high exhaust air rate,and the hydrogen combustion in exhaust air rate increases from 39％to 50％,while NO emission decreases to 30％.Hydrogen combustion technology for pulverized coal has potential application in reducing carbon emission from coal combustion,and provides a feasible technical path option for emission reduction in coal-fired power stations.
coal-hydrogen co-firinghydrogen combustion ratioexhaust air rateNO emission
万方数据
维普
