Experiences and results on a 0.8MWth oxy-fuel operation pilot-scale circulating fluidized bed
Experiences and results on a 0.8MWth oxy-fuel operation pilot-scale circulating fluidized bed
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DOI：
10.1016/j.apenergy.2011.11.037
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发表时间：
2012-04
期刊：
影响因子：
11.2
通讯作者：
Yewen Tan;L. Jia;Yan-Lin Wu;E. Anthony
中科院分区：
文献类型：
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作者：
Yewen Tan;L. Jia;Yan-Lin Wu;E. Anthony
富氧循环床燃烧(CFBC)是一种替代富氧粉化燃烧(PC)的燃烧技术，它具有许多优点，往往使其成为一种更好的CO2捕集选择。本文介绍了在0.8兆瓦中试规模的燃氧循环床上的实验结果和运行经验。试验工作表明，空气燃料和氧气燃料之间的平稳过渡和稳定的氧气燃料操作，在干燥的基础上二氧化碳浓度超过90%。我们的实验结果还表明，石灰石的脱硫性能受到燃烧方式的影响，这种影响不仅取决于燃烧温度，还取决于燃料的性质。试验经验表明，在富氧-燃料模式下长时间运行中试装置，由于烟气中硫含量较高，导致腐蚀加剧。随着欧洲和北美的富氧循环床示范工程的开展，希望这些试验能够为该技术的燃烧特性、污染物形成和运行经验提供有价值的数据。
Oxy-fuel circulating fluidized bed combustion (CFBC) is an alternate technology to oxy-fuel pulverized combustion (PC), which has a number of advantages that can often make it a better choice for CO2capture. This paper presents experimental results and operating experiences from a 0.8MWth pilot-scale, oxy-fuel-fired circulating fluidized bed. Test work demonstrated smooth transition between air-fired and oxy-fuel-fired operation and stable oxy-fuel operation with CO2concentrations above 90% on a dry basis. Our experimental results also showed that limestone performance for sulfur removal is impacted by the combustion mode and that this impact depends on fuel characteristics as well as on combustion temperature. The test experiences showed that operating the pilot-scale unit over a long period under oxy-fuel mode led to enhanced corrosion due to higher sulfur concentrations in the flue gas. As demonstration projects of oxy-fuel CFB proceed in both Europe and North America, it is hoped that these tests can provide valuable data on the combustion characteristics, pollutant formation and operating experiences specific to this technology.