硫酸铵添加剂对生物质富氧混烧过程中氯与氮协同转化特性的影响  

Influences of ammonium sulfate additive on Cl and N co-transformation during biomass/semi-coke oxy-fuel co-combustion

作　　者：柳殿彬 李伟[1] 李诗媛[1,2,3] 孔润娟 LIU Dian-bin;LI Wei;LI Shi-yuan;KONG Run-juan(Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;Dalian National Laboratory for Clean Energy,Dalian 116023,China)

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院大学,北京100049 [3]中国科学院洁净能源创新院,辽宁大连116023

出　　处：《燃料化学学报》2020年第1期28-35,I0002,共9页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(51706227)资助~~

摘　　要：在50 kW循环流化床燃烧实验台进行了O 2/CO 2气氛下硫酸铵添加剂对生物质和半焦混烧过程中K/S/Cl迁移和N 2O/NO排放影响实验研究。结果表明,硫酸铵添加剂从提升管喷入后能够明显降低积灰中Cl含量,同时显著降低烟气中NO浓度。此外,硫酸铵添加剂还能够增强碱金属K向底渣和循环灰迁移转化,从而降低积灰中碱金属K含量。实验表明,硫酸铵添加剂的最佳喷入位置在提升管中上部。To investigate the influences of ammonium sulfate(AS)on the K/S/Cl transformation and N 2O/NO emission,the biomass and semi-coke were co-combusted in a 50 kW circulating fluidized bed under O 2/CO 2 atmosphere.The experimental results show that AS can reduce the Cl content in deposits obviously and decrease the NO concentration in flue gas significantly.Besides,AS can retain more K in bottom ash and circulating ash,thereby reducing the K content in deposits.In terms of reducing Cl in deposits,the top half of the riser is the optimal position to inject AS.

关 键 词：富氧燃烧 生物质 循环流化床 硫酸铵添加剂 氯氮协同转化 

分 类 号：TK6[动力工程及工程热物理—生物能]