研究了生活垃圾热解过程中炉内添加钙基添加剂对含氯污染物排放的影响。通过比较不同钙氯摩尔比时氧化钙的脱氯效率发现，钙氯摩尔比为2：1时最合适。氧化钙、煅烧白云石、负载镍的氧化钙均能有效脱氯，脱氯效率均达75%以上，并能减少油相中的氯含量。煅烧白云石、负载镍的氧化钙表现均优于氧化钙，并通过底渣XRD分析和热力学模拟进行分析。对油相中的氯苯含量进行测定，结果表明钙基添加剂能有效减少氯苯的产率，并对其反应路径进行合理分析。

The effect of the addition of calcium-based additives in furnace on the emission of chlorine-containing contaminants during MSW pyrolysis at 750℃ is analyzed.Through comparing the dechlorination efficiencies of CaO under different Ca/Cl molar ratio,it is found that the optimum molar ratio of calcium to chlorine is 2:1.CaO,calcined dolomite and Ni-supported CaO all can effectively remove chlorine with an efficiency above 75%,and also reduce the chlorine content in the tar.Calcined dolomite and Ni-supported CaO have better performances than CaO,and the reason is analyzed based on XRD results of bottom ash and thermodynamic simulation.The content of chlorobenzene in tar is tested,showing that calcium-based additives can reduce the yield of chlorobenzene.Reaction paths for reducing the content of chlorine in tar by calcium-based additives are also analyzed reasonably.

周昭志(1993-),男,博士研究生,研究方向为固体废弃物热处置及环境评价,11527033@zju.edu.cn