Please wait a minute...
Waste Disposal & Sustainable Energy
Waste Disposal & Sustainable Energy  2019, Vol. 1 Issue (3): 207-212    DOI: 10.1007/s42768-019-00020-0
    
城市生活垃圾循环流化床焚烧过程的脱氯化研究
Yaming Cai1, Zengyi Ma1, Jianhua Yan1, Yike Zhang1, Zhe Chen1, Ruofeng Gao1, Pucheng Zhong1
1 State Key Laboratory of Clean Energy Utilization/Ningbo Research Institute, Zhejiang University, Hangzhou 310027, Zhejiang, China
Dichlorination in a circulating fluidized-bed incinerator for municipal solid waste incineration system
Yaming Cai1, Zengyi Ma1, Jianhua Yan1, Yike Zhang1, Zhe Chen1, Ruofeng Gao1, Pucheng Zhong1
1 State Key Laboratory of Clean Energy Utilization/Ningbo Research Institute, Zhejiang University, Hangzhou 310027, Zhejiang, China
 全文: PDF 
摘要： 氯是生活垃圾焚烧系统排放的主要污染物之一。本文研究了循环流化床垃圾焚烧系统的炉内钙脱氯过程。分析了炉内CaCl2和Ca的稳定性、脱氯过程和焚烧系统中氯的分布。结果表明，循环流化床垃圾焚烧炉中Ca脱氯的最佳Ca/Cl摩尔比为2:1，且脱氯产物CaCl2在高温（＞850°C）下分解。在?>?700°C的温度下，我们测量到CaCl2分解率高达80%。在炉内添加Ca，主要是为石灰石分解成尾气提供脱氯Ca源。烟气中Ca2+含量随烟气温度的升高而逐渐降低。捕获HCl后形成稳定的CaCl2，且在集灰袋中出现相对较小的固体颗粒。
关键词： 垃圾焚烧;  HCl;  Ca基;  二氯化    
Abstract: 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 CaCl2 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 CaCl2 was found to decompose at high temperatures (>?850 °C). At temperatures?>?700 °C, we measured CaCl2 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 Ca2+ in the flue decreased gradually, parallelly to the temperature of the flue gas. Stable CaCl2 was formed after HCl was captured, and relatively small solid particles appeared in the ash collecting bag.
Key words: Waste incineration    HCl    Ca-based    Dichlorination
收稿日期: 2019-09-16 出版日期: 2020-01-14
通讯作者: Zengyi Ma     E-mail: mazy@zju.edu.cn
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　
Yaming Cai
Zengyi Ma
Jianhua Yan
Yike Zhang
Zhe Chen
Ruofeng Gao
Pucheng Zhong

引用本文:

Yaming Cai, Zengyi Ma, Jianhua Yan, Yike Zhang, Zhe Chen, Ruofeng Gao, Pucheng Zhong. Dichlorination in a circulating fluidized-bed incinerator for municipal solid waste incineration system. Waste Disposal & Sustainable Energy, 2019, 1(3): 207-212.

链接本文:

http://www.zjujournals.com/wdse/CN/10.1007/s42768-019-00020-0    或    http://www.zjujournals.com/wdse/CN/Y2019/V1/I3/207

[1] Xuan Cao, Shengyong Lu, William R. Stevens, Huadong Zhong, Kaicheng Wu, Xiaodong Li, Jianhua Yan. 生活垃圾焚烧过程二噁英快速间接测量技术的研究综述[J]. Waste Disposal & Sustainable Energy, 2019, 1(1): 39-52.