Abstract: According to the principle of venturi tube,a technology and equipment of dedusting and desulfurization of flue gas from coal-buring boiler by integrating a wet process with a cyclone is designed.The structure trait,the working principle and the important aspects of industrial applications of this unit are introduced.The results of industrial applications show that the dedusting efficiency is more than 97%, and the desulfurization efficiency reaches 75% with a resistance less than 1 200 Pa.

Key words: coal-burning boiler, wet type, dedusting, desulfurization