In view of the problems such as unstable operation of sodium formate drying system, the decline of the dust removal effect of the dust removal tower and large power consumption of fans, the corresponding solutions such as technical transformation of dust removal tower, change of fan running position and transformation of cyclone collector are adopted. The hidden dangers of original equipment are eliminated, the vibration of equipment is reduced, and the monthly power saving is about 10000 degrees. The material collection rate in the first class cyclone reaches 99.5%.The device reaches the expected transformation target.