A procedure and device for the cooling and purification of industrial gases containing dust, especially gases of tostation (Machine-translation by Google Translate, not legally binding)

摘要

Process for the cooling and purification of industrial gases containing dust eg toasting gases by pre-purification if possible dry with direct cooling by means of a refrigerating agent conducted in refrigerated cycle in return and consecutive electric purification of the cooled wet gases in at least two phases (installation for the removal of arsenic) between which a cooling (intermediate cooling) of the gases takes place at room temperature characterized in that said intermediate cooling is carried out in an indirect heat exchanger cooled preferably by fresh water and to such an extent that with it takes care of such a large part of the cooling work of the direct cooling in front that the return refrigeration of the washing agent is suppressed for at least one of the direct cooling phases in front of it, being able to be coupled and preferably introduced. The resulting condensate in the indirect heat exchanger is given within the direct cooling cycle for the scrubbing agent. (Machine-translation by Google Translate, not legally binding)