Polycyclic Aromatic Hydrocarbon (PAH) Emission from Co-Firing of Petrochemical Sludge with Coal in Circulating Fluidized Bed Incinerator

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Ge Zhu¹  Changsui Zhao¹ 

[1] School of Energy and Environment, Southeast University

关键词: Petrochemical Sludge;    Circulating Fluidized Bed (CFB);    Co-Firing;    Coal;    Polycyclic Aromatic Hydrocarbon (PAH);   

DOI  :  10.1252/jcej.08we102

来源: Maruzen Company Ltd

【 摘 要 】

References(29)Cited-By(1)Experimental tests of polycyclic aromatic hydrocarbon (PAH) emission characteristics from co-firing of petrochemical sludge with coal were conducted in a pilot-scale circulating fluidized bed (CFB) incinerator with the thermal input of 0.2 MW. Results showed that when the mass mixing ratio increases from 10 to 40%, PAH, especially lower molecular weight (LMW) PAH, emission increases substantially. As combustion temperature or excess air coefficient increases, PAH emission decreases at first and then increases. There is an optimum combustion temperature and excess air coefficient for inhibiting PAHs formation. PAH emission declines significantly when the secondary air fraction is increased from 20 to 50%. The staged combustion technique of circulating fluidized beds may have the advantage of inhibiting the formation of PAHs. Some optimized operation parameters are recommended for incineration of petrochemical sludge with coal in circulating fluidized bed incinerator.

【 授权许可】

Unknown