Enhanced combustion efficiency and reduced pollutant emission in a fluidized bed combustor by using porous alumina bed materials
Enhanced combustion efficiency and reduced pollutant emission in a fluidized bed combustor by using porous alumina bed materials
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使用多孔氧化铝床材料提高流化床燃烧器的燃烧效率并减少污染物排放
DOI：
10.1016/j.applthermaleng.2015.10.153
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发表时间：
2016-02-05
影响因子：
6.4
通讯作者：
Kim, Heejoon
中科院分区：
文献类型：
--
作者：
Qin, Linbo;Han, Jun;Kim, Heejoon
在半柱尺度流化床燃烧器（FBC）中进行了多氧化铝床材料中聚丙烯燃烧的实验比较。结果表明聚丙烯可以在两种床材料中有效用作燃料。聚丙烯在多孔氧化铝（PA）和非氧化铝（NA）中的燃烧效率高于993％，而烟气气中的CO浓度低于343 ppm。在聚丙烯燃烧过程中，未在PA中观察到明显的火焰，这意味着燃烧温度较低。因此，无法抑制任何形成。此外，PA具有电容效应，可以捕获或吸收一些可燃烃或在PA的微孔中融化的聚丙烯，并导致PA中较低的CO发射和高温。因此，PA中干舷区的温度显着降低。在NA的情况下，干板区域的温度似乎独立于高度。还研究了温度对PA聚丙烯燃烧的影响，实验结果表明，当温度高于750摄氏度时，燃烧效率高于99.9％。（c）2015年Elsevier Ltd.保留所有权利。
Experimental comparisons of polypropylene combustion in porous and nonporous alumina bed materials were conducted in a semi-pilot scale fluidized bed combustor (FBC). The results indicate that polypropylene can be effectively used as a fuel in both bed materials. The combustion efficiencies of polypropylene in porous alumina (PA) and nonporous alumina (NA) are above 993%, and CO concentrations in flue gas are below 343 ppm. During polypropylene combustion, no obvious flame is observed in PA, which implies the combustion temperature is low. Hence, NO formation can be suppressed. Further, PA has the capacitance effect, which can capture or absorb some combustible hydrocarbons or melted polypropylene in the micropore of PA and causes lower CO emission and high temperatures in PA. Thus, the temperature of the freeboard zone is significantly decreased in PA. In the case of NA, the temperature in the freeboard zone seems to be independent of the height. The influence of temperature on polypropylene combustion in PA is also investigated, the experimental results demonstrate that the combustion efficiency is above 99.9% when the temperature is above 750 degrees C. (C) 2015 Elsevier Ltd. All rights reserved.