摘要:
Selon un procédé de séparation sélective du HF contenu dans un gaz contenant du HF, du HCl et le cas échéant d'autres composants, on traite le gaz avec un liquide de lavage afin d'au moins extraire par lavage le HF, et on précipite et extrait le fluor contenu dans le système CaCl2-CaF2-HCl-H2O sous forme de CaF2. Afin de traiter les gaz d'évacuation d'une usine d'incinération, notamment d'une usine d'incinération de déchets, le gaz (2; 25) contenant du HF et du HCl est extrait par lavage des gaz d'évacuation (2) d'une usine d'incinération avec une solution aqueuse de CaCl2 (4; 27) ayant une teneur en CaCl2 surstoechiométrique par rapport à la teneur en fluor de la solution, puis un gaz contenant du HCl (6; 29) est extrait de la lessive.
摘要:
The invention relates to a method for burning waste and fossil fuels by combining a large fossil fueled boiler (1) and a waste incinerator (31), in which the flue gas from the incinerator and the flue gas from the large furnace are brought together and purified. According to the invention, in order to simplify gas purification in the combined furnaces, the flue gases from the waste incinerator (31) are purified (35, 36) with respect to heavy metals and dioxins/furans (PCDD/F) before being joined to the flue gases from the large boiler (1) and the previously purified flue gases from the waste incinerator are then joined to the flue gases from the large boiler to conduct flue gas desulphurization (19).
摘要:
The invention relates to a method for burning waste and fossil fuels by combining a large fossil fueled boiler (1) and a waste incinerator (31), in which the flue gas from the incinerator and the flue gas from the large furnace are brought together and purified. According to the invention, in order to simplify gas purification in the combined furnaces, the flue gases from the waste incinerator (31) are purified (35, 36) with respect to heavy metals and dioxins/furans (PCDD/F) before being joined to the flue gases from the large boiler (1) and the previously purified flue gases from the waste incinerator are then joined to the flue gases from the large boiler to conduct flue gas desulphurization (19).
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.