Method and system for removing vanadium from crude titanium tetrachloride

A technology of crude titanium tetrachloride and organic matter, which is applied in the chemical industry, can solve the problems that affect the continuous and stable operation of the refining system, and the superheater is easy to foul, so as to avoid the formation of fouling, reduce cleaning operations, and ensure stable operation Effect
CN113149068AActive Publication Date: 2021-07-23PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Publication Date
2021-07-23

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Abstract

The invention discloses a method and system for removing vanadium from crude titanium tetrachloride, and the method comprises the following steps: mixing an organic matter for removing vanadium with an inhibitor to obtain a first mixed solution; mixing the first mixed solution with a crude titanium tetrachloride solution to obtain a second mixed solution; using a superheater for heating the second mixed liquid, so that the organic matter reacts with vanadium impurities in the crude titanium tetrachloride liquid; and separating the reacted material to obtain vanadium-removed titanium tetrachloride, wherein the inhibitor is used for inhibiting the reaction product of the organic matter and the vanadium impurity from further forming a viscous solid through a polymerization reaction. According to the vanadium removal method and system, formation of scaling substances in the superheater can be inhibited, the operation cycle of the vanadium removal process is prolonged, and stable and smooth operation of the vanadium removal process is guaranteed.
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Description

technical field

[0001] The invention relates to the field of chemical industry, in particular to a method and system for removing vanadium from crude titanium tetrachloride. Background technique

[0002] The production process of titanium dioxide by chloride method has gradually become the mainstream process of domestic titanium dioxide production because of its environmental protection technology and excellent product quality. Refined titanium tetrachloride is an important intermediate raw material for the production of titanium dioxide or sponge titanium by the chloride method, and the refining process of crude titanium tetrachloride is the key link in the production of refined titanium tetrachloride. During the refining process of crude titanium tetrachloride, vanadium impurities in the crude titanium tetrachloride need to be removed.

[0003] In the process of using organic matter to remove vanadium from crude titanium tetrachloride, the organic matter is in VOCl 3 and...

Claims

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