研究报告
贝建业,项维灿,詹明秀,徐旭,张光学,吴昂键.生活垃圾热解气化二噁英生成指示物浓度分布及关联模型研究[J].环境科学学报,2023,43(2):300-308
生活垃圾热解气化二噁英生成指示物浓度分布及关联模型研究
- Study on indicator concentration distribution and correlation model of dioxins from pyrolysis and gasification of MSW
- 基金项目：国家重点研发计划（No.2019YFC1906801）
- 作者
- 单位
- 贝建业
- 中国计量大学计量测试工程学院，杭州 310018;浙江大学清洁能源利用国家重点实验室，杭州 310027
- 项维灿
- 浙江大学清洁能源利用国家重点实验室，杭州 310027
- 詹明秀
- 中国计量大学计量测试工程学院，杭州 310018
- 徐旭
- 中国计量大学计量测试工程学院，杭州 310018
- 张光学
- 中国计量大学计量测试工程学院，杭州 310018
- 吴昂键
- 浙江大学清洁能源利用国家重点实验室，杭州 310027
- 摘要：生活垃圾热解气化过程中二噁英在线监测关联模型缺失.本文研究了不同反应气氛、氯源条件下生活垃圾热解气化过程中二噁英及 指示物氯苯、多环芳烃的排放特性，利用SPSS软件量化二噁英与前驱物氯苯、多环芳烃之间的相关性.结果表明，由于还原性气氛的抑制，热解气化条件下二噁英毒性当量要比氧化性条件下低60倍.此外，12种氯苯中1，2，3-TrCBZ （1，2，3-trichlorobenzene）可作为城市生活垃圾热解气化烟气中二噁英含量的优选指示物，并建立了气相PCDD/Fs （Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans）与1，2，3-TrCBZ浓度的线性相关模型.16种多环芳烃中BKF（苯并荧蒽）和DbA （二苯并蒽）与二噁英总量、毒性当量的关联性一般，R2在0.7左右.本研究可为热解气化条件下二噁英在线监测关联模型的建立提供理论指导.
- Abstract：The online monitoring correlation model of dioxins in the municipal solid waste （MSW） pyrolysis and gasification process is seldomly studied. In the present work， the emission characteristics of dioxins and their corresponding indicators such as chlorobenzene and polycyclic aromatic hydrocarbons were investigated in terms of different reaction atmospheres and chlorine sources during pyrolysis and gasification of MSW. The correlation between the dioxins and their precursors （chlorobenzene and polycyclic aromatic hydrocarbons） was quantified by SPSS software. The results demonstrated that the toxicity equivalent of dioxins from the pyrolysis gasification condition was 60 times lower than that from the oxidation atmosphere due to the inhibition effect of the reductive atmosphere. In addition， amongst 12 chlorobenzenes， 1，2，3-TrCBZ （1，2，3-trichlorobenzene） could be used as the preferred indicator of dioxin content in the pyrolytic gasification of MSW， to build the linear correlation model between gas-phase PCDD/Fs （polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans） and 1，2，3-TrCBZ concentration. As for toxicity equivalent and the total amount， the correlation between dioxins and their indictors BKF （Benzo（k）fluoranthene） and DbA （Dibenzo（a，h）anthracene） in 16 PAHs was not very relevant （R2 was about 0.7）. This study will provide theoretical guidance for the establishment of online dioxin monitoring correlation model under pyrolysis and gasification conditions.
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