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Method for removing vanadium from titanium tetrachloride refining organic matter

A technology of titanium tetrachloride and crude titanium tetrachloride, which is applied in the direction of titanium tetrachloride and titanium halide, can solve the problems of easy clogging, and achieve the effects of avoiding clogging, accelerating decomposition, and low impurity content

Active Publication Date: 2022-03-22
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Abstract
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Problems solved by technology

CN107758732A etc. disclose a kind of crude titanium tetrachloride refining vanadium removal method, this method comprises that titanium tetrachloride generates titanium tetrachloride steam through heat exchange, and this steam reacts with organic matters in the refining tower to obtain fine titanium, this method removes Vanadium is fast and effective, but there is a problem that the bottom of the refining tower is easy to clog

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  • Method for removing vanadium from titanium tetrachloride refining organic matter

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Embodiment 1

[0032] A, the thick titanium tetrachloride gained by chlorination is packed in the thick titanium storage tank (3), the organic vanadium removal reagent is packed in the organic vanadium removal reagent storage tank (2), the thick titanium tetrachloride and the organic removal The vanadium reagent is 2.6‰ by mass ratio and enters the return pipeline of the flash tank, and enters in the circulation tank (1);

[0033] B. The solid content in the circulation tank (1) is 120g / L, pump the 98wt% titanium tetrachloride slurry in the circulation tank (1) into the heat exchanger (5), and enter the flash after heat exchange through the heat exchanger (5) Steam tank (4), 2wt% returns to chlorination system (9);

[0034] C, in the flash tank (4), the control flash temperature is 154 ℃, and the flash pressure is 20kpa, and the TiCl obtained after the flash is 4 The steam enters the rectifying tower (6), and after passing through 42 trays, the solution containing high-boiling impurities re...

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Abstract

The invention discloses a method for removing vanadium from titanium tetrachloride refined organic matter, and belongs to the technical field of titanium tetrachloride production. In order to further improve the vanadium removal rate and prevent equipment and pipeline blockage, the invention provides a method for removing vanadium from titanium tetrachloride refined organic matter. In the present invention, the adding point of the organic vanadium-removing reagent and crude titanium is located at the return pipe of the flash tank, and part of the titanium tetrachloride slurry in the circulation tank is returned to the chlorination system, thereby controlling the solid content balance of the circulation tank during the entire circulation process, Avoid clogging, ensure the long-term operation of the vanadium removal system, and the vanadium removal speed is fast, and the TiCl 4 Low impurity content.

Description

technical field [0001] The invention belongs to the technical field of titanium tetrachloride production, and in particular relates to a method for removing vanadium from titanium tetrachloride refined organic matter. Background technique [0002] Titanium tetrachloride is the most important intermediate product in the production of titanium dioxide by the chloride method and the production of sponge titanium by the Krall method. The downstream products sponge titanium and titanium dioxide have strict requirements on the vanadium content in titanium tetrachloride. Therefore, the removal of vanadium from crude titanium tetrachloride is an important process for refining titanium tetrachloride. At present, the organic vanadium removal method is widely used in the vanadium removal process of titanium tetrachloride refining due to its advantages of abundant sources of vanadium removal reagents, low price, non-toxicity, and less environmental pollution. [0003] In recent years, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/02
CPCC01G23/024
Inventor 周丽李良王建鑫宋兵
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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