Patent ID: 8591819

Claim:
A combustion-type exhaust gas treatment apparatus, comprising: a circulation tank; a weir disposed in said circulation tank; a combustion treatment section for performing combustion treatment on an exhaust gas; and a cooling section for cooling the exhaust gas which has been treated in said combustion treatment section, wherein said combustion treatment section includes an exhaust-gas treatment combustor configured to form flames, a cylindrical body made from metal and arranged below said exhaust-gas treatment combustor, said cylindrical body being located downstream of the flames, an annular water reservoir provided between said exhaust-gas treatment combustor and said cylindrical body, and a water-film formation mechanism configured to form a swirling water film on an inner surface of said cylindrical body, said water-film formation mechanism having at least one water supply port that supplies water into said annular water reservoir in a direction tangential to said annular water reservoir, and wherein said circulation tank is located below said cylindrical body and is configured to receive the water that formed the swirling water film on said inner surface of said cylindrical body, wherein said weir is configured to prevent circulation of by-products having a predetermined size which are contained in the water, and wherein said inner surface of said cylindrical body is roughened.