A METHOD FOR WASTE-GAS CLEANING IN CERAMIC INDUSTRIES

The waste gas from the production process of technical ceramics contains hydrogen fluoride and hydrocarbons. The concentrations of these air pollutants have to be reduced to the legal limit values. To solve these waste gas problems, a combination of a regenerative afterburner and a fluorine scrubber is introduced. The regenerative afterburner was chosen because even at low loads of organic components an autothermic operation is possible and the energy costs can be minimized. The scrubber, working with a lime suspension, does not produce any waste water and supplies a final product, which can be dumped without any problems.