DISPOSAL OF WASTE GASES FROM PRODUCTION OF ALUMINUM CHLORIDE

摘要

Waste gases containing 15% or less vaporized chlorides are processed to recover chlorine values as HC1 by filtration of particulate material followed by the adsorption of metal chlorides on carbon beds and subsequent hydrolyzing of the metal chlorides at a temperature o 100-150.degree.C to form metal oxides and HC1. The remaining gases such COC12 are further hydrolyzed to recover aqueous HC1 and then the gases are scrubbed and finally incinerated to provide a discharge to the atmosphere containing CO2, N2, H2O, O2 and about 5 ppm. HC1.