以一台存在结渣的国产 30 0 MW机组的 10 2 5 t/ h锅炉为对象 ,采用数值模拟对其中硫铁矿和煤粉及其飞灰颗粒的运动进行数值计算 ,通过对两者在炉内的运动和水冷壁附近颗粒浓度的比较 ,探讨结渣产生的机理和原因 ,并对与结渣有关的含硫量、Fe S2 密度、硫铁矿颗粒尺寸分布、缩小切圆直径的影响进行了数值研究 Taking a 1025t / h boiler of domestic 30? MW unit with slagging as an object, the numerical simulation of the movement of pyrite, pulverized coal and fly ash particles was carried out by numerical simulation. The movement in the furnace and the concentration of particles in the vicinity of the water wall were compared to investigate the mechanism and causes of slagging, and the influence of slagging related sulfur content, Fe S2 density, pyrite particle size distribution and shrinking tangent diameter Conducted a numerical study