煤燃烧过程中灰层的扩散阻力及其微观结构的研究

STUDY ON HINDRANCE EFFECTS IN COAL COMBUSTION AND INVESTIGATION ON THEIR MICROCONSTRUCTIONS

煤的灰层扩散系数对煤粒的燃烧有较大的影响。因此,本文用实验的方法测定了三种煤的灰层扩散系数。研究还发现,不同的颗粒直径、不同的煤种以及不同的灰层厚度、煤的灰层扩散系数均不同。最后,从其微观结构得到了合理的解释。

The barrier diffusivity of coal effects its combustion greatly. In this paper we reported the experimental results of the barrier diffusivity of coal particles. It was found that the barrier diffusivity depends on the diameters of coal particles the kinds of coal and the thickness of ash. Investigations on microconstruction were also shown in this paper.