采用旋风—沸腾颗粒层两级除尘器净化冲天炉烟气的干法工艺表明,对于中小型冲天炉的烟气净化是可行的,其工艺流程是:从冲天炉内引出的高温烟气先经风冷或水冷管道,再进入旋风除尘器,在初净化的同时,烟气温度进一步冷却到沸腾颗粒层允许的温度后,进入沸腾颗粒层除尘器进行二次净化. The dry process of purifying the cupola flue gas by the cyclone-ebullition particle level two-stage precipitator shows that it is feasible to purify the flue gas of the small and medium-sized cupola. The technological process of the process is as follows: Air-cooled or water-cooled pipe, and then into the cyclone, the initial purification at the same time, the flue gas temperature is further cooled to the boiling particles allowed temperature, into the boiling particle layer filter for secondary purification.