一、前言 在高温烟气热辐射中,粒子辐射占的比例最大。从热辐射角度,粒子可分为大粒子与微(小)粒子两类。当粒子的尺度参数x=πD/λ(D为粒子直径,λ为入射波长)小于或接近于1时称为微粒子。此时粒子表面凹凸不平之处相对入射波长来说,可忽略不计,颗粒表面可认为是光学光滑的,这种颗粒的辐射行为可用Mie电磁理论来描述。当粒子的尺度参 First, the preface In the high temperature flue gas heat radiation, particle radiation accounted for the largest proportion. From the perspective of thermal radiation, the particles can be divided into two types: large particles and micro (small) particles. When the particle size parameter x = πD / λ (D is the particle diameter, λ is the incident wavelength) is less than or close to 1, it is called as fine particle. At this point, the surface of the particle is uneven with respect to the incident wavelength, which is negligible. The particle surface can be regarded as optically smooth. The radiation behavior of such particle can be described by Mie electromagnetic theory. When the particle size parameters