Dichlorination in a circulating fluidized-bed incinerator for municipal solid waste incineration system  

作　　者：Yaming Cai Zengyi Ma Jianhua Yan Yike Zhang Zhe Chen Ruofeng Gao Pucheng Zhong 

机构地区：[1]State Key Laboratory of Clean Energy Utilization/Ningbo Research Institute,Zhejiang University,Hangzhou 310027,Zhejiang,China

出　　处：《Waste Disposal and Sustainable Energy》2019年第3期207-212,共6页废弃物处置与可持续能源（英文）

摘　　要：Cl is one of the main pollutants emitted from domestic waste incineration systems. In this study, we focused on the process of Ca dechlorination in the furnace of a circulating fluidized-bed waste incineration system. We analyzed the stability of CaCl_(2) and Ca in the furnace, the dechlorination process, and distribution of Cl in the incineration system. The results show that the optimal Ca/Cl molar ratio for Ca dechlorination in the circulating fluidized-bed waste incinerator is 2:1;moreover, the dechlorination product CaCl_(2) was found to decompose at high temperatures (> 850℃). At temperatures > 700℃, we measured CaCl_(2) decomposition rates up to 80%. Ca was added in the furnace, mainly to provide a dechlorination Ca source for the decomposition of limestone into tail flue gas. The amount of Ca^(2+) in the flue decreased gradually, parallelly to the temperature of the flue gas. Stable CaCl_(2) was formed after HCl was captured, and relatively small solid particles appeared in the ash collecting bag.

关 键 词：Waste incineration HCL Ca-based Dichlorination 

分 类 号：X70[环境科学与工程—环境工程]