Verfahren und Vorrichtung zur Ausscheidung von Schwermetallen und schwermetallhaltigen Verbindungen

摘要

The invention relates to a process for separating out heavy metals and compounds containing heavy metals from the exhaust gas of metallurgical vessels charged with problem materials, which vessels are directly connected to a gas purification plant and which supply gas afterburning devices. The process is characterised according to the invention by the following steps: a) the flue gas collecting in the metallurgical vessel is removed from this by suction and purified. b) some of the dust-freed exhaust gas, in an amount which can be set, is branched off from the main gas stream to supply the afterburning and is led through a cooler. c) the cooled part-stream of the clean gas is added to the flue gas prior to its entry into the gas purification plant.