GAS SCRUBBER

A gas scrubber is provided to improve collecting capabilities of water-soluble gas and powder by extending contact area and contact time of gas, prevent corrosion of exhaust duct and pipe by installing an instant drying part, and reduce the volume ratio of the gas scrubber by integrating components of the gas scrubber. A gas scrubber comprises a manifold(100), a burner(110), a burning chamber(200), a wet column(400), an instant drying part(500), and a drain tank(600). The manifold sends harmful gas flown in to the burning chamber. The burner is installed on one side of the manifold to ignite the combustion gas by flowing air or oxygen into combustion gas. The burning chamber is located under the manifold to burn or thermally decompose harmful gas flown in from the manifold using a flame generated from the burner. The wet column includes a baffle board(410) and an absorber(420) which extend a flow path of the gas passing through the burning chamber to increase contact area and contact time of the gas. The instant drying part supplies external air into the wet column through an external air inlet to lower relative humidity of the gas passing through the wet column. The drain tank is located under the burning chamber and wet column and collects and drains wastewater and powder generated while the gas passes through the burning chamber and wet column.