Han Jun, Kim Heejoon, Minami Wataru, Shimizu Tadaaki, Wang Guanghui
College of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, PR China.
Bioresour Technol. 2008 Jun;99(9):3782-6. doi: 10.1016/j.biortech.2007.07.010. Epub 2007 Sep 14.
A combustion experiment with cedar pellet fuel was carried out in a semi-pilot scale bubbling fluidized bed combustor. The effects of temperature, fluidized velocity, and bed material particle size on the emission of NOx, CO, and CO2 were investigated. The variations in the temperature profile and gas concentration in the vertical and horizontal directions of the combustor were also studied. The results showed that high temperature can improve the combustion efficiency and decrease CO emission. Moreover, increasing the fluidized velocity suppressed CO formation. In addition to temperature and fluidized velocity, the bed material also played an important role during cedar pellet combustion. Coarse bed materials were better than fine materials. In these test runs, the CO emission varied from 20 to 189 ppm, CO2 emission ranged from 5.7% to 19.5%, while NOx emission was quite stable at about 220 ppm.
在一个半中试规模的鼓泡流化床燃烧器中进行了雪松颗粒燃料的燃烧实验。研究了温度、流化速度和床料粒径对氮氧化物、一氧化碳和二氧化碳排放的影响。还研究了燃烧器垂直和水平方向上温度分布和气体浓度的变化。结果表明，高温可以提高燃烧效率并降低一氧化碳排放。此外，提高流化速度抑制了一氧化碳的形成。除了温度和流化速度外，床料在雪松颗粒燃烧过程中也起着重要作用。粗床料比细床料更好。在这些试验运行中，一氧化碳排放从20 ppm到189 ppm不等，二氧化碳排放范围为5.7%到19.5%，而氮氧化物排放相当稳定，约为220 ppm。
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