Review on fate of chlorine during thermal processing of solid wastes

作     者：Peng Lu Qunxing Huang A.C.(Thanos) Bourtsalas Nickolas J.Themelis Yong Chi Jianhua Yan 

作者机构：State Key Laboratory of Clean Energy UtilizationZhejiang University Earth Engineering CenterColumbia University 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2019年第31卷第4期

页      面：13-28页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China (Nos. 51621005, 51676170) the Key Project for Strategic International Collaboration on Science and Technology Innovation of the National Key R&D Program of China (No. 2016YFE0202000) the Fundamental Research Funds for the Central Universities (No. 2017FZA4013) the Academic Raising Star Training Program for PhD Student of Zhejiang University 

主　　题：Chlorine Solid wastes Thermal processing Emission Controlling methods 

摘      要：Chlorine(Cl) is extensively present in solid wastes, causing significant problems during the thermal conversion of waste to energy or fuels, by combustion, gasification or pyrolysis.This paper introduces the analytical methods for determining the Cl content in solid materials and presents the concentrations of Cl in various types of wastes, as reported in literature. Then, it provides a comprehensive analysis on the Cl emission behavior and Cl species formed during the thermal processing of the inorganic and organic Cl sources. The challenges resulted from the reactions between the formed Cl species and the ferrous metals, the heavy metals and the organic matters are summarized and discussed, e.g., high temperature corrosion, heavy metal evaporation and dioxin formation. The quality degradation of products(oil, char and syngas) by Cl is analyzed. Finally, the available controlling methods of Cl emission, including pre-treatment(water washing, sorting,microwave irradiation and stepwise pyrolysis) and in-furnace(absorbents, co-treatment and catalysts) methods are assessed.