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近十多年发生的许多相互牵连的事件结果是更加强了固体燃料作为电厂主要能源。综合燃料价格,变化着的市场行情和环境条件的限制等因素,要求锅炉的设计与运行跟上这个形势。本文讨论了影响机组尺寸和比例的煤各种特性。内容包括已详尽论述过的煤种,水分,发热量和灰特性的影响。特别应注意下述特性,诸如燃料含氧量和燃烧反应能力,挥发性的碱金属对积灰和炉膛结渣以及形成一微米以下硅尘的影响。了解上述特性有助于设计师在考虑机组设计时与燃料特性相适应。
The many interconnected events that took place in the last decade or so have resulted in a further increase in the use of solid fuels as the major energy source for power plants. Integrated fuel prices, changing market conditions and environmental conditions and other constraints, requiring the boiler design and operation to keep up with this situation. This article discusses the various coal characteristics that affect unit size and ratio. It includes the effects of coal, moisture, calorific value, and ash properties that have been exhaustively discussed. Particular attention should be paid to the following characteristics such as fuel oxygen content and combustion reactivity, the effects of volatile alkali metals on fouling and furnace slag formation, and the formation of silica dust below one micron. Understanding the above features helps designers adapt fuel characteristics when considering unit design.