煤气化细渣残炭与煤的掺烧及其气体释放特性OACHSSCDCSTPCD

In order to utilize the large amount of accumulated solid waste coal gasification fine slag(FS)in a resourceful and large-scale manner,this study uses froth flotation to enrich the residual carbon(RC)in FS.The characteristics of RC combustion alone and its co-combustion with bituminous coal are investigated using a thermogravimetric analyzer.By comparing experimental results with kinetic calculations,the ignition perfor-mance,burnout performance,combustion stability,and comprehensive combustion characteristics of particles during single and co-combustion processes are elucidated.Additionally,the emission patterns of CO,CO2,and NO2 during the combustion of RC alone and in combination with coal are explored using a mass spectrometer.The results show that the flotation process effectively reduces the aluminosilicate polymerization degree in FS,enriching RC.The addition of bituminous coal significantly enhances the combustion reactivity of RC during co-combustion.Different mass ratios of RC can effectively reduce pollutant emissions during the combustion of bituminous coal,with an 80% RC mass fraction resulting in the lowest NO2 emissions.