Formation of PCDDs and PCDFs during the combustion of polyvinylidene chloride.
Formation of PCDDs and PCDFs during the combustion of polyvinylidene chloride.
复制标题
聚偏二氯乙烯燃烧过程中形成 PCDD 和 PCDF。
DOI：
10.1016/s0045-6535(00)00540-3
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发表时间：
2001
期刊：
影响因子：
8.8
通讯作者：
N. Umedzu
中科院分区：
文献类型：
--
作者：
M. Ohta;S. Oshima;T. Iwasa;N. Osawa;K. Kumatoriya;A. Yamazaki;T. Takasuga;M. Matsushita;N. Umedzu
在实验室规模的聚偏二氯乙烯（PVDC）的燃烧中，使用石英管式炉，该石英管式炉被设计和制造为提供期望的燃烧温度和燃烧气体与空气的混合状态，发现在800°C或更高温度下，PVDC多氯二苯并呋喃的水平（PCDDs/PCDFs）的产生从PVDC燃烧并不高于单独加热空气，并且因此远低于PVDC在750°C或更低温度下燃烧所产生的水平。这些结果首次在实验室证实了PVDC焚烧温度与多氯二苯并对二恶英/多氯二苯并呋喃形成之间的关系，以及高温、空气和燃烧气体之间的湍流以及足够的停留时间作为最大限度地减少城市固体废物焚烧炉中多氯二苯并对二恶英/多氯二苯并呋喃形成的控制因素的首要重要性。
In laboratory-scale combustion of polyvinylidene chloride (PVDC) with a quartz tubular furnace designed and fabricated to provide the desired combustion temperature and mixing state of combustion gas with air, it was found that at 800°C or higher the level of PVDC polychlorinated dibenzofurans (PCDDs/PCDFs) resulting from PVDC combustion was no higher than that from heating air alone, and thus far below the levels which resulted from PVDC combustion at 750°C or lower. The results provide the first laboratory confirmation of the relation between PVDC incineration temperature and PCDD/PCDF formation, and of the primary importance of high temperature, turbulence for mixing between air and combustion gas, and sufficient residence time, as governing factors for the minimization of PCDD/PCDF formation in municipal solid waste incinerators.