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本文应用经典的传热学理论对各种冷渣器内的传热进行了分析和计算,认为冷渣器内空气与高温炉渣颗粒之间的对流换热系数,对冷渣器的结构设计具有决定性的作用。文章指出:高温炉渣颗粒流态化逆流空气冷却,有利于结构紧凑化设计,被加热的空气携带细渣颗拉返回循环流化床锅炉的炉膛内,有利于锅炉燃烧的稳定,有利于热效率的进一步提高;靠重力使高温炉渣颗粒流态化和靠共振控制均匀排渣的风、水冷设计,可以使冷渣器的结构走向紧凑型、节能型,简单型,应当是当前循环流化床锅炉冷渣器的理想的发展方向。
In this paper, the heat transfer theory in a variety of slag cooler was analyzed and calculated using the classical heat transfer theory. The convection heat transfer coefficient between air and slag in the slag cooler was considered. The structure design of the slag cooler has Decisive role. The article points out that the high temperature slag particles fluidize countercurrent air cooling is conducive to the design of compact structure. The heated air carrying fine slag pull back to the hearth of the circulating fluidized bed boiler, which is in favor of boiler combustion stability and thermal efficiency To further improve; gravity by high-temperature slag particles fluidized and controlled by resonance uniform slag, wind and water cooling design, can make the slag cooler structure toward compact, energy-saving, simple, should be the current circulating fluidized bed boiler Desiccant ideal direction of development.