The invention relates to a front-bag and rear-
electricity combined flow distribution deduster, which comprises a dedusting box body, an air inlet
pipe and an air outlet
pipe which are communicated with the dedusting box body and an ash bucket connected to the lower part of the dedusting box body, wherein the dedusting box body comprises a bag dedusting box body and an electric dedusting box body; the air inlet
pipe comprises a bag dedusting air inlet pipe communicated with the bag dedusting box body and an electric dedusting air inlet pipe which is communicated with the electric dedusting box body; the bag dedusting air inlet pipe is provided with a bag dedusting air
inlet valve, and the electric dedusting air inlet pipe is provided with an electric dedusting air
inlet valve; and the air outlet pipe is communicated with the bag dedusting box body and the electric dedusting box body. The front-bag and rear-
electricity combined flow distribution duster integrates the advantages of an electric deduster and a bag type deduster, the electric deduster and the electric deduster run in a partition mode and are switched mutually, and the characteristics of the electric deduster and the bag type deduster are exerted to meet the requirements of working conditions that a boiler is frequently halted and started; and by the front-bag and rear-
electricity combined flow distribution deduster, the damage of pipe explosion of the boiler to a filter bag is avoided effectively, the safety of the filter bag is ensured, bypass
smoke gas can be purified effectively during the starting of
fuel oil in the boiler, and the requirement of
environmental protection is met.