Process for the work-up of a contaminated inactive mercury(II)chloride/active carbon-catalyst

摘要

Contaminated inactive mercury(II)chloride/active carbon-catalysts are worked-up. To this end the invention provides for the active carbon to be burnt with the quantity of air or oxygen or mixtures thereof necessary to produce combustion gases containing metallic mercury in vapor form together with between 0.5 and 5% by volume of oxygen and between 2 and 15% by volume of carbon monoxide; for the combustion gases to be contacted in a condensation zone with water so as to effect separation of the mercury therein; for the gases issuing from the condensation zone to be conveyed through a scrubbing zone having an alkaline liquor therein; and for the gases leaving the scrubbing zone to be delivered to the atmosphere.