Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Halogenous component
Patent
1984-05-09
1986-09-16
Doll, John
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Halogenous component
423245, 423481, 423612, 423618, 65 301, B01D 5334, C03C 1500
Patent
active
046121765
ABSTRACT:
A process and apparatus for treating a gas containing a metal halide or an organo substituted metal halide which is drawn into a recovery chamber and is decomposed to a metal precipitate and hydrogen halide by reaction with a warm water spray. Gaseous hydrogen halide is then subjected to a cold water spray to reduce the hydrogen halide gas to an acid which is diluted and discarded as an effluent. The treated gas which is finally discarded to the environment contains substantially no metal halides or organo substituted metal halides and only a minimal concentration of hydrogen halide gas. Metal recovery is enhanced by controlling the pH of the metal oxide and the collected warm water spray and the metal precipitate which is collected in the recovery chamber.
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Doll John
Russel Jeffrey E.
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