Relevance of coplanar PCBs for TEQ emission of fluidized bed incineration and impact of emission control devices.
Relevance of coplanar PCBs for TEQ emission of fluidized bed incineration and impact of emission control devices.
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DOI：
10.1016/s0045-6535(03)00536-8
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发表时间：
2003-11
期刊：
影响因子：
8.8
通讯作者：
T. Sakurai;R. Weber;S. Ueno;J. Nishino;Masaru Tanaka
中科院分区：
文献类型：
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作者：
T. Sakurai;R. Weber;S. Ueno;J. Nishino;Masaru Tanaka
研究了5个流化床焚烧炉燃烧城市生活垃圾时共面多氯联苯对总TEQ排放的影响。在17次堆叠测量中，共面pcb对总TEQ的贡献平均小于3%，在一次测量中对总TEQ的最大贡献为7.5%。烟气冷却段设计的差异对共面多氯联苯对总TEQ的影响没有影响。以某焚烧炉为研究对象，详细研究了排放控制装置对共面多氯联苯对总TEQ的影响。多氯联苯对总TEQ的相对贡献沿烟气线增加。这是由于袋式过滤器对与TEQ相关的pcdd / pcdf的去除效率略高于共面pcb，而对pcdd / pcdf的破坏效率略高于SCR催化剂对pcdd / pcdf的破坏效率。此外，还比较了排放控制装置（袋式过滤器和催化剂）对其他氯代芳香族化合物（多氯苯和多氯酚）的去除率与对pcdd / pcdf和共面多氯联苯的去除率。多氯联苯或多氯酚的去除率与PCDD/PCDF和共面多氯联苯的去除率有很大差异。讨论了在文献中提出的使用指标化合物进行TEQ评估的意义。
Five fluidized bed incinerators combusting municipal solid waste were assessed for the impact of coplanar PCBs on total TEQ emission. In 17 stack measurements, the coplanar PCBs contributed on average less than 3% to total TEQ with a maximum contribution of 7.5% to total TEQ in one measurement. Differences in the design of the flue gas cooling section did not show an effect on the impact of coplanar PCBs on total TEQ. The effect of emission control devices on the impact of coplanar PCBs on the total TEQ was studied in more detail at one incinerator. The relative contribution of PCBs to total TEQ increased along the flue gas line. This was caused by a slightly higher removal efficiency for TEQ relevant PCDDs/PCDFs compared to coplanar PCBs by the bag filters and a higher destruction efficiency for PCDDs/PCDFs compared to PCBs by the SCR catalyst. Additionally, the removal efficiencies of the emission control devices (bag filters and catalyst) for other chlorinated aromatic compounds which have been proposed as TEQ indicator compounds (polychlorinated benzenes and polychlorinated phenols) were compared with those for PCDDs/PCDFs and coplanar PCBs. Removal efficiencies for polychlorinated benzenes or polychlorinated phenols considerably differed from those of PCDD/PCDF and coplanar PCBs. Implications for TEQ assessments using indicator compounds as proposed in the literature are discussed.