Evaluation of the Performance of a Power Plant Boiler Firing Coal, Biomass and a Blend Under Oxy-fuel Conditions as a CO2 Capture Technique
Evaluation of the Performance of a Power Plant Boiler Firing Coal, Biomass and a Blend Under Oxy-fuel Conditions as a CO2 Capture Technique
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作为二氧化碳捕集技术，在富氧燃料条件下燃烧煤、生物质和混合物的发电厂锅炉的性能评估
DOI：
10.1016/j.egypro.2013.06.017
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Szuhánszki J
中科院分区：
文献类型：
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作者：
Szuhánszki J
在燃煤发电厂中利用生物质可以减少二氧化碳排放，特别是在与碳捕获和封存(CCS)技术相结合时，例如富氧燃料燃烧。本文利用商用计算流体力学软件，对一台500 MW超临界燃煤锅炉在相同的热输入下，燃用煤、生物质和20%生物质混合物时的空气和富氧燃料条件下的性能进行了预测。结果表明，对于湿循环改造，最佳氧气浓度在25%~30%的模拟范围内，无论是燃煤还是燃用20%生物质混合物，都可以达到空气燃烧的换热特性。然而，对于100%的生物质燃烧，可能需要对燃烧安排进行修改，以实现更接近原始设计的输出。
The utilisation of biomass in coal-fired power plants can mitigate CO2 emissions, especially when combined with carbon capture and storage (CCS) technologies, such as oxy-fuel combustion. In this paper, a commercial computational fluid dynamics software was used, with small or no modifications to the physical submodels, to predict the performance of a 500 MWesub-critical coal fired boiler under air and oxy-fuel conditions when firing coal, biomass, and a 20% biomass blend, for the same thermal input. The results suggest that for a wet recycle retrofit, the optimum oxygen concentration lies between the simulated range of 25 and 30%, where heat transfer characteristics of the air-fired design could be matched when firing either coal or a 20% biomass blend. However, for 100% biomass firing modifications of the firing arrangement may be necessary to achieve an output closer to the original design.