Effect of organic solid waste and coal mixed firing on the formation of heavy metals and particulate matter
Rapidly growth of organic solid waste(OSW)has caused serious social and environmental issues.Co-combustion is an economical and environmental method to treat OSW.However,there will be a variety of heavy metals discharged with flue gas during combustion as OSW contains them.Therefore,this study conducted an experiment on the migration of heavy metals and generation of micro particles during the co-combustion of OSW and lignite.The results show that,the release of heavy metals during combustion not only depends on the concentration of heavy metal the fuel contains,but also on the chemical mechanism at high temperature.The content of Pb,Cd and As in the flue gas of blending fuel is obviously lower than that of sole OSW,but Cu,Zn,Co and Mn shows opposite tendency.In addition,the particle size distribution of the four fuels all shows a normal distribution at 800℃and 850℃,but large particle size generates when the combustion temperature rises to 900℃.
万方数据
维普
