title: Incineration of kitchen waste with high nitrogen in vortexing fluidized-bed incinerator and its NO emission characteristics.
abstract: Some municipal solid waste (MSW) can be used as the fuel. Combustion of MSW with high nitrogen content is successfully conducted in a lab-scale vortexing fluidized-bed incinerator (VFBI). Pigskin with 16.5 wt.% nitrogen content was used to simulate the high nitrogen content kitchen waste, and silica sand was used as the bed material. The effects of operating conditions, such as the bed temperature, freeboard temperature, excess oxygen ratio, and static bed height on the CO and NO concentrations at the exit of combustor and cyclone were investigated. The experimental results show that the freeboard temperature is the most important factor for CO emission. The order of operating conditions impact on the NO emission is: (1) excess oxygen ratio; (2) bed temperature; (3) freeboard temperature; and (4) static bed height. Utilizing cyclone can significantly reduce the CO emission concentration when the CO concentration released from the freeboard is higher than 50 ppm. On the other hand, the cyclone has no significant effect on the NO emission. Despite having high nitrogen content, a low conversion from fuel-N to NO was attained. Compared with other types of combustors, VFBI reduces the CO and NO emission concentrations much better when burning MSW with high nitrogen content.
authors: School of Metallurgy and Resource, Anhui University of Technology, Maanshan 243002, China. ddffeng@126.com
authors: Feng
authors: F
authors: Duan
authors: Department of Chemical Engineering, Chung Yuan Christian University, ChungLi 320, Taiwan, China.
authors: Chiensong
authors: C
authors: Chyang
authors: Department of Chemical Engineering, Chung Yuan Christian University, ChungLi 320, Taiwan, China.
authors: Jiaruei
authors: J
authors: Wen
authors: Research and Development Center for Environmental Technology, Chung Yuan Christian University, ChungLi 320, Taiwan, China.
authors: Jim
authors: J
authors: Tso
mesh_terms: D002248:Carbon Monoxide / Q000032:analysis; D017745:Incineration; D009569:Nitric Oxide / Q000032:analysis*; D009584:Nitrogen / Q000032:analysis*; D010100:Oxygen / Q000737:chemistry; D012037:Refuse Disposal / Q000379:methods*; D013696:Temperature
chemical_list: D009569:Nitric Oxide; D002248:Carbon Monoxide; D009584:Nitrogen; D010100:Oxygen