VERFAHREN ZUR SELEKTIVEN HF-ABTRENNUNG AUS EINEM HF UND HCL UND GEGEBENENFALLS ANDERE KOMPONENTEN ENTHALTENDEN GAS

摘要

In a process for selectively separating HF from a gas containing HF and HCl and possibly other components, in which the gas is treated with a washing fluid at least to wash out the HF and the fluorine separates out from the CaCl2-CaF2-HCl-H2O system as CaF2 and is extracted, in order to treat an exhaust has gas from an incineration plant, especially a rubbish incineration plant, the gas (2; 25) containing HF and HCl is washed out of the exhaust gas (2) of an incineration plant with an aqueous CaCl2 solution (4; 27) with a superstoichiometric CaCl2 content in relation to the fluorine content of the solution and a gas containing HCl (6; 29) is extracted from the wash.