Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ivb metal
Patent
1990-07-05
1991-12-17
Lewis, Michael
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ivb metal
423241, 423492, C01B 701, C01G 2302
Patent
active
050733559
ABSTRACT:
A process for the removal of chlorine from off-gases which continuously or sporadically contain small amounts of chlorine by scrubbing the off-gases with a ferrous chloride-containing aqueous solution in a scrubbing system. The solution used is obtained by dissolving a solids mixture which results from the chlorination of a titaniferous and ferriferous feedstock material and which contains essentially ferrous chloride. This solution is used in particular for the scrubbing of off-gases formed in the production of titanium dioxide by the chlorination of titaniferous and ferriferous feedstock material, thus generating titanium tetrachloride and ferrous chloride, and by the reaction of the titanium tetrachloride with oxygen-containing gases. It is preferably the solids mixture separated in this process from the chlorination mixture in a condensation step that is dissolved in the process of the invention, and at least part of the resulting solution is used for the scrubbing of the off-gases. Known devices can be used for scrubbing, e.g., packed columns.
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Bolam Brian M.
Kronos (U.S.A.), Inc.
Lewis Michael
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