Performance of PAHs emission from bituminous coal combustion.
Carcinogenic and mutagenic polycyclic aromatic hydrocarbons (PAHs) generated in coal combustion have caused great environmental health concern. Seventeen PAHs (16 high priority PAHs recommended by USEPA plus Benzo[e]pyrene) present in five raw bituminous coals and released during bituminous coal combustion were studied. The effects of combustion temperature, gas atmosphere, and chlorine content of raw coal on PAHs formation were investigated. Two additives (copper and cupric oxide) were added when the coal was burned. The results indicated that significant quantities of PAHs were produced from incomplete combustion of coal pyrolysis products at high temperature, and that temperature is an important causative factor of PAHs formation. PAHs concentrations decrease with the increase of chlorine content in oxygen or in nitrogen atmosphere. Copper and cupric oxide additives can promote PAHs formation (especially the multi-ring PAHs) during coal combustion.
Yan
Jian-Hua
JH
National Key Lab of MOE Clean Energy and Environmental Engineering, Zhejiang University, Hangzhou 310027, China. yanjh@cmee.zju.edu.cn
You
Xiao-Fang
XF
Li
Xiao-Dong
XD
Ni
Ming-Jiang
MJ
Yin
Xue-Feng
XF
Cen
Ke-Fa
KF
D000393:Air Pollutants / Q000032:analysis* / Q000592:standards; D002681:China; D003031:Coal / Q000032:analysis* / Q000592:standards; D003300:Copper; D006358:Hot Temperature; D008422:Materials Testing; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000737:chemistry*; D013696:Temperature; D014481:United States
D000393:Air Pollutants; D003031:Coal; D011084:Polycyclic Aromatic Hydrocarbons; D003300:Copper