EFFECT OF RECYCLE ON FLUIDIZED-BED COMBUSTION AND EMISSION CHARACTERISTICS OF HIGH-SULFUR LIGNITE
EFFECT OF RECYCLE ON FLUIDIZED-BED COMBUSTION AND EMISSION CHARACTERISTICS OF HIGH-SULFUR LIGNITE
复制标题
回收对高硫褐煤流化床燃烧及排放特性的影响
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
Hakan Altindağ
中科院分区：
文献类型：
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作者：
N. Selçuk;Yusuf Gogebakan;Hakan Harmandar;Hakan Altindağ
循环对优质煤沸腾燃烧产生的气体污染物排放的影响已经得到了广泛的研究，并得到了很好的证明。然而，到目前为止，回收对高灰分、挥发分和硫含量的土耳其褐煤燃烧产生的气体排放的影响还没有被研究过。在沸腾锅炉中使用国产褐煤的最新趋势要求对污染物排放进行调查，并使沸腾燃烧技术适应这些褐煤。在这项研究中，给出了中东工业大学0.3兆瓦大气鼓泡床燃烧器试验台在不同循环比下燃烧典型的国产褐煤Beypazari，在添加石灰石和不添加石灰石的情况下，各种气体排放的实验结果。测试结果表明，循环对直流炉已经很高的燃烧效率影响不大。在气体排放方面，循环的引入减少了NOx和SO2的排放，但增加了CO的排放。
The effect of recycle on gaseous pollutant emissions from fluidized-bed combustion of high-quality coals has extensively been investigated and is well documented. However, the effect of recycle on gaseous emissions from combustion of Turkish lignites with high ash, volatile matter, and sulfur contents has not been investigated to date. Recent trends in the utilization of indigenous lignites in fluidized-bed boilers necessitated investigation of pollutant emissions and adaptation of fluidized-bed combustion technology to these lignites. In this study, experimental results of various runs pertaining to gaseous emissions from the Middle East Technical University 0.3 MWt atmospheric bubbling fluidized-bed combustor test rig burning a typical indigenous lignite, Beypazari, at various recycle ratios, with and without limestone addition, are presented. Measurements show that the effect of recycle on already high combustion efficiency in once-through operation is not pronounced. As for the gaseous emissions, introduction of recycle reduces NOx and SO2 emissions but enhances CO emission.