Gas purification system

The utility model discloses a gas purification system. The gas purification system comprises a wet dust collector, a gas circulating and purifying device communicated with a gas outlet of the wet dust collector through a pipeline, and a sediment purification and treatment device communicated with a sediment outlet of the wet dust collector through a pipeline. The gas purification system is a device for purifying harmful gas through liquid spraying circulation on the basis of a wet method dust collection working principle, and dust particles can be separated from airflow; after the dust particles are condensed and automatically separated from the airflow, the dust particles falling into liquid are subjected to liquid and solid separation under the action of a centrifugal machine, liquid serves as a solution in circulation, solids are made into sludge cakes and recycled, in the liquid and solid mixing process, the effect of a physical reaction is enhanced through a chemical reaction of chemical addition agents