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前言随着锅炉容量的不断增大,在制粉系统的设计计算中,特别是对直吹式制粉系统一些问题显得比较突出。例如,如何更恰当地选择排粉风机的参数;怎样使并联布置管道的阻力达到均衡以及保证风、粉的均匀分配等。要解决这些问题,首先需要掌握输粉系统中各元件的阻力特性,较准确地计算出输粉管道内的压力损失。关于输送物料的阻力损失已有不少研究报告,但大多是通过对作用于一个粒子上的力的
Preface With the increasing capacity of the boiler, some problems in the design and calculation of the milling system, especially for the direct-blowing milling system, are more prominent. For example, how to choose the parameters of powder discharge fan more properly, how to balance the resistance of pipes arranged in parallel and ensure the uniform distribution of wind and powder. To solve these problems, we first need to know the resistance characteristics of each component in the powder feeding system and calculate the pressure loss in the powder conveying pipe more accurately. There are a lot of research reports on the resistance loss of conveying materials, but most of them are based on the force acting on one particle