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Chemical composition of fuels and emissions from a coal + tire combustion experiment in a power station

机译：电站中煤+轮胎燃烧实验的燃料和排放物的化学成分

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Medium-sulfur bituminous coal and a mixture of 95 wt. percent coal plus 5 wt. percent tire-derived fuel (TDF) in the form of shredded automotive tires were combusted in a stoker boiler under the same conditions. This paper presents quantitative chemical compositions of the fuels and of the gaseous and particulate emissions. The coal + TDF mixture is considerably richer in Zn than the pure coal as a result of the high Zn content of the shredded tires (approx 1 wt. percent Zn). Atmospheric emissions of Zn increased from 15 g/h to nearly 2.4 kg/h when coal + TDF was combusted. Similarly, emissions of most other metals and metalloids, as well as those of HC1 increased when TDF (approx 3000 ppm Cl) was added. The enhanced metal emissions might be due to formation of gaseous metal chloride species in the stack gases. On the other hand, emissions of CO decreased slightly, whereas those of NO_x, SO_2, and total particulate matter remained virtually unchanged. These results help in assessing the environmental impact of energy recovery from scrap tires in stoker boilers.
机译：中硫烟煤和95 wt。百分比煤加5 wt。在相同条件下，在切碎的锅炉中燃烧百分之百的切碎的汽车轮胎形式的轮胎衍生燃料（TDF）。本文介绍了燃料以及气体和颗粒物排放的定量化学成分。由于碎轮胎的锌含量高（约占锌的1％），因此，煤+ TDF混合物中的锌比纯煤中的锌含量高得多。当燃烧煤炭和TDF时，Zn的大气排放量从15 g / h增加到近2.4 kg / h。同样，当添加TDF（约3000 ppm Cl）时，大多数其他金属和准金属的排放以及HCl的排放增加。金属排放量增加可能是由于在烟道气中形成了气态金属氯化物。另一方面，CO的排放量略有下降，而NO_x，SO_2和总颗粒物的排放量几乎保持不变。这些结果有助于评估从煤锅炉废轮胎中回收能量对环境的影响。

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