Method for recovering titanium (halo) alkoxide from a waste liquid
AssigneeClariant International Ltd.
InventorsJing SU, Chung Ping CHENG, Werner Karl SCHUMANN
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Abstract
A method for separating one or more titanium (halo) alkoxides from a liquid mixture comprising titanium tetrachloride TiCl4 and at least one titanium (halo) alkoxide, said method comprising: agitating and cooling the liquid mixture until crystallization of at least one titanium (halo) alkoxide occurs in the liquid mixture; separating the crystallized titanium (halo) alkoxide from the mixture; and optionally, washing the separated, crystallized titanium (halo) alkoxide with a solvent.
Claims15
A method for separating titanium (halo) alkoxide from a liquid mixture comprising titanium tetrachloride TiCl4 and at least one titanium (halo) alkoxide, said method comprising:
- cooling the liquid mixture until crystallization of at least one titanium (halo) alkoxide occurs in the liquid mixture;
- separating the crystallized titanium (halo) alkoxide from its mother liquor by a separation equipment selected from the group of decanter, filter presses, vacuum filters, pressure filters and centrifuges;
- and optionally, distilling said mother liquor to separate titanium tetrachloride therefrom, wherein the titanium (halo) alkoxide is of the formula TiXx(OR)y where X is halogen, R is alkyl, x=0-3, y=1-4 and x+y=4.
Dependencies are inferred from the claim text.