| 摘要 |
Such gases contain combustible constituents and a multiplicity of toxic constituents, which depend on the nature of the waste materials fed. Before combustion, the gases must be freed of these constituents. According to the invention, the crude gas is washed for this purpose in a first washing stage with water and formalin, the gas from the first washing stage is washed in a second washing stage with water, alkali and hydrogen peroxide, the pure gas is discharged from the second washing stage, and the suspended materials are removed from the washing liquids of the first and second washing stages and the reaction products dissolved in the washing liquids are converted for harmless use. The process according to the invention is especially suitable for use in pyrolysis plants. |
