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首页> 外文期刊>IFAC PapersOnLine >Energy and exergy analyses of a subcritical pulverised coal-fired boiler based on the effects of slagging and fouling
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Energy and exergy analyses of a subcritical pulverised coal-fired boiler based on the effects of slagging and fouling

机译：基于结渣和结垢效应的亚临界煤粉锅炉的能量和火用分析

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摘要

Globally coal-fired power plants are still predominantly utilised for production of electrical energy. The efficiency of a coal-fired power plant is greatly influenced by the performance of the boiler. In turn, the boiler performance is affected by the coal type, combustion characteristics, and the heat transfer from the flue gas side to water-steam side. In the boiler the heat transfer is impeded by the accumulation of ash deposits, known as slagging and fouling, on the heat transfer surfaces. In this paper the effects of slagging and fouling on the boiler performance are investigated by means of energy and exergy analyses. A boiler simulation model, representative of the combustion and heat transfer characteristics, is used to perform the analyses. From the results it is seen that slagging has the most significant effect, while fouling has a less significant influence, on the boiler energy and exergy efficiency.
机译：在全球范围内，燃煤发电厂仍主要用于生产电能。燃煤电厂的效率在很大程度上受到锅炉性能的影响。反过来，锅炉的性能受煤种，燃烧特性以及从烟气侧到水蒸汽侧的热传递的影响。在锅炉中，由于灰分沉积物在热传递表面上的积聚而被阻止，这阻碍了热传递。本文通过能量和火用分析研究了结渣和结垢对锅炉性能的影响。代表燃烧和传热特性的锅炉模拟模型用于执行分析。从结果可以看出，结渣对锅炉能量和火用效率的影响最大，而结垢的影响较小。

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