Combustion of coal in circulating fluidized-bed boilers: a review
Combustion of coal in circulating fluidized-bed boilers: a review
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DOI：
10.1016/s0009-2509(99)00285-7
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发表时间：
1999-11-01
影响因子：
4.7
通讯作者：
Basu, P
中科院分区：
文献类型：
--
作者：
Basu, P
燃料成本是循环流化床锅炉最重要的运行成本。一个设计良好的循环流化床锅炉可以以相当高的效率燃烧煤，并在可接受的气体排放水平。然而，在运行中的工厂中经常发生的偏离理想运行条件的情况，使工厂远离设计性能。对锅炉炉膛内燃烧和污染物产生过程的充分了解可以大大避免这种代价高昂的破坏。本文综述了目前对燃烧过程的认识。结果表明，尽管循环流化床锅炉具有燃料灵活性，但它可能需要不同的炉膛容积来提供最佳的燃烧条件。根据具体情况，煤焦可以在三种燃烧状态中燃烧。有几种性能预测模型可用于高炉的性能分析。给出了循环流化床炉硫捕集和氮氧化物控制能力预测的简化方程和方法。1999爱思唯尔科学有限公司版权所有。
Fuel cost is the single most important operating cost in a circulating fluidized bed boiler. A well-designed CFB boiler can burn coal with a fairly high efficiency and within acceptable levels of gaseous emission. However, departure from ideal operating conditions, which often occurs in operating plants, throws the plant far off the designed performance. A good understanding of the combustion and pollutant generating processes in the boiler furnace can greatly avoid such costly upsets. This paper reviews the current understanding of combustion process. It shows that in spite of its fuel flexibility a CFB boiler may need different furnace volumes to provide the optimum combustion conditions. Depending upon the circumstances the coal char could burn in one of three combustion regimes. Several performance predictive models are available for performance analysis of the furnace. Simplified equations and methods are provided for prediction of sulfur capture and nitric oxide control capability of a CFB furnace. (C) 1999 Elsevier Science Ltd. All rights reserved.