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Method for recovering titanium tetrachloride

A technology of titanium tetrachloride and recovery tank, which is applied in the direction of titanium halide, can solve the problems of heat mismatch in the chlorination furnace system, loss of titanium tetrachloride, etc., and achieve continuous production, high recovery rate, and simple process equipment Effect

Active Publication Date: 2012-05-30
JINCHUAN GROUP LIMITED
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Problems solved by technology

[0006] In view of this, the purpose of this invention is to provide a method for reclaiming titanium tetrachloride, which solves the problem of titanium tetrachloride loss caused by the hydrolysis process, and simultaneously solves the problem of vanadium-containing titanium tetrachloride produced by refining aluminum powder in addition to vanadium. The heat mismatch between the mud returning to the chlorination system and the chlorination furnace system

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  • Method for recovering titanium tetrachloride

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Embodiment Construction

[0020] see figure 1 The process flow diagram of the present invention, the method for reclaiming titanium tetrachloride of the present invention comprises the following steps: 1) the vanadium titanium tetrachloride mud in the settling tank is by natural sedimentation, and the titanium tetrachloride clear liquid wherein is stratified with the underflow of solid mud ; 2) The titanium tetrachloride clear liquid overflows in the titanium tetrachloride recovery tank, and the solid-containing mud produced at the bottom of the settling tank flows into the paddle dryer by itself, and the paddle dryer selects 0.55~0.65MPa The steam heat source is used to heat the solid-containing mud, and the temperature is controlled at 140-148°C. Preferably, the steam pressure is 0.6MPa, and the temperature is controlled at 145°C; the temperature control can adopt an automatic adjustment method to ensure that the temperature is stable during the mud drying process. At the same time, the special struc...

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Abstract

The invention discloses a method for recovering titanium tetrachloride. The method comprises the following steps that: 1) a vanadium titanium tetrachloride slurry in a settling tank is naturally settled, wherein the titanium tetrachloride supernatant is separated from a solid-containing slurry underflow; 2) the titanium tetrachloride supernatant overflows into a titanium tetrachloride recovery tank, the solid-containing slurry generated on the bottom of the settling tank automatically flows into a blade dryer, and the blade dryer selects a 0.6MPa steam heat source and heats the solid-containing slurry, and the temperature is controlled to be 145 DEG C; 3) titanium tetrachloride liquid in the solid-containing slurry is gasified into titanium tetrachloride steam, overflows from the top of the blade dryer and enters a condenser through a pipeline, and solid impurities in the solid-containing slurry are dried into slag and enter a vanadium slag pot; and 4) the titanium tetrachloride steam is condensed into liquid and enters the titanium tetrachloride recovery tank.

Description

technical field [0001] The invention relates to a method for recovering titanium tetrachloride, in particular to a method for recovering titanium tetrachloride from titanium tetrachloride mud by using a paddle dryer. Background technique [0002] Titanium tetrachloride is an important intermediate product in the production of titanium sponge and titanium dioxide. There are many harmful impurities in crude titanium tetrachloride produced by boiling chlorination. The high and low boiling point impurities in crude titanium tetrachloride can be removed by distillation and rectification, and the vanadium in titanium tetrachloride can be removed by chemical method of aluminum powder removal. Impurities. [0003] A large amount of titanium tetrachloride slurry will be produced in the above refining production process, of which only VOCl is produced in the production of aluminum powder for vanadium removal 2 The amount of titanium tetrachloride slurry such as solid impurities acco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/02
Inventor 秦为涛梁曦彬田忠元
Owner JINCHUAN GROUP LIMITED
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