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Pilot Tests on the Catalytic Filtration of Dioxins

机译：二恶英的催化过滤试验

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Tests were conducted to study the removal efficiencies (REs) of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) from flue gas during a test program involving a pilot-scale catalytic filter (CF) module and a full-scale municipal solid waste incinerator (MSWI). The REs attained with the CF on a side stream and a conventional activated carbon (AC) injection and baghouse filtration system in the full-scale MSWI are evaluated via simultaneous sampling and analysis of both gas- and particle-phase PCDD/Fs. Flue gas without AC is supplied to the pilot-scale CF module for evaluating its RE capabilities. The REs achieved with the CF at 180 ℃ are 96.80 and 99.50％, respectively, for the gas phase and the particulate contained. The gas-phase PCDD/F RE rises significantly at 200 and 220 ℃. The air/cloth (A/C) ratio defined as is the gas flow rate (m~3/min) divided by the filtration area (m~2) also affects the PCDD/F RE, especially in the gas phase. At 180 ℃, a RE of gas-phase PCDD/Fs of 95.94％ is attained with the CF at 0.8 m/min, yet it decreases at higher A/C ratios (l and 1.2 m/min). A significantly lower toxic equivalency (TEQ) concentration (0.71 ng I-TEQ/ g) was measured in the filter dust of the CF module compared to that collected by the AC adsorption system (4.18 ng I-TEQ/g), apparently because of the destruction of gas-phase PCDD/Fs by the catalyst.
机译：在涉及中试规模催化过滤器（CF）模块和全尺寸试验程序的测试程序中，进行了测试，以研究烟气中多氯二苯并对二恶英（PCDD）和多氯二苯并呋喃（PCDF）的去除效率（RE）。市政固体废物焚烧炉（MSWI）。通过同时采样和分析气相和颗粒相PCDD / F，评估了侧流中CF和常规活性炭（AC）注入和布袋除尘系统获得的RE。不带AC的烟道气被供应到中试规模CF模块，以评估其RE功能。 CF在180℃下获得的REs分别为气相和所含颗粒的96.80％和99.50％。气相PCDD / F RE在200和220℃时明显升高。空气/布（A / C）比定义为气体流速（m〜3 / min）除以过滤面积（m〜2），也会影响PCDD / F RE，尤其是在气相中。在180℃时，CF为0.8 m / min时，气相PCDD / Fs的RE达到95.94％，而在较高的A / C比（l和1.2 m / min）下，其RE降低。与AC吸附系统收集到的毒性当量（TEQ）浓度（4.18 ng I-TEQ / g）相比，在CF模块的滤尘中测得的毒性当量（TEQ）浓度低得多（0.71 ng I-TEQ / g）。催化剂破坏气相PCDD / Fs。

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  • 来源
    《Environmental Science & Technology》 |2014年第7期|3995-4001|共7页
  • 作者

    Pao Chen Hung; Shu Hao Chang; Syuan Hong Lin; Alfons Buekens; Moo Been Chang;

  • 作者单位

    Institute of Environmental Engineering, National Central University, 300 Jhong-da Road, Jhongli, Taoyuan 32001 Taiwan, Republic of China;

    Institute of Environmental Engineering, National Central University, 300 Jhong-da Road, Jhongli, Taoyuan 32001 Taiwan, Republic of China;

    Institute of Environmental Engineering, National Central University, 300 Jhong-da Road, Jhongli, Taoyuan 32001 Taiwan, Republic of China;

    State Key Laboratory of Clean Energy Utilization, Zhejiang University, 38 Zheda Road, Hangzhou, Zhejiang 310027, People's Republic of China;

    Institute of Environmental Engineering, National Central University, 300 Jhong-da Road, Jhongli, Taoyuan 32001 Taiwan, Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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