PURIFICATION OF WASTE GASES

Residual gases containing 15 % or less of gaseous chlorides are treated by filtration on a particulate material and the metal chlorides are then adsorbed on charcoal beds (20, 22, 24). The metal chlorides are desorbed (at 24) and then hydrolysed (at 70) with steam to form HCl and metal oxides. HCl i...

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Bibliographic Details
Main Authors DONALD LEE KINOSZ, THOMAS GEORGE LAMBERTI, LEE GRAYDON CARPENTER, VITO CEDRO III
Format Patent
LanguageEnglish
Published 26.07.1979
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:Residual gases containing 15 % or less of gaseous chlorides are treated by filtration on a particulate material and the metal chlorides are then adsorbed on charcoal beds (20, 22, 24). The metal chlorides are desorbed (at 24) and then hydrolysed (at 70) with steam to form HCl and metal oxides. HCl is removed from the gases by scrubbing with water and the remaining gases are again hydrolysed to convert COCl2 into hydrochloric acid, and are then washed and burned. The gases discharged into the atmosphere contain CO2, N2, H2O, O2 and approximately 5 ppm of HCl.
Bibliography:Application Number: AU19780032604