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Method for reducing tin content of titanium tetrachloride

A technology of titanium tetrachloride and tin tetrachloride, applied in the direction of titanium tetrachloride, tin chloride, titanium halide, etc., can solve the problem of increasing the content of aluminum trichloride, the high price of trivalent titanium, and the impact on the production of sponge titanium, etc. problems, to achieve the effects of reducing energy consumption, simple equipment installation and production, and a wide range of applications

Pending Publication Date: 2021-05-07
仙桃市中星电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN201811325189 discloses that through trivalent titanium slurry, aluminum powder and refined titanium tetrachloride are mixed and heated for reaction and then distilled to remove tin tetrachloride, but the price of trivalent titanium used in this method is high, and aluminum powder is a flammable and explosive substance , and the final product of the reaction will increase the content of aluminum trichloride. CN2014105560279 discloses a method that passes through a rectification tower, a first condenser, a top product storage tank, a reboiler, a second condenser, a bottom product storage tank and a reflux pump. To remove tin tetrachloride, two substances are separated by rectification, which consumes a lot of steam and electricity and increases production costs
[0003] At present, in the production process of titanium tetrachloride, when rutile is used as raw material, the finished titanium tetrachloride will contain a small amount of tin tetrachloride, which will affect the production of sponge titanium

Method used

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  • Method for reducing tin content of titanium tetrachloride

Examples

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Effect test

Embodiment 1

[0018] A method for reducing titanium tin tetrachloride content, comprising the following steps:

[0019] 1) An aluminum wire mesh 2 is added to the middle of the distillation tower 1, and the aluminum wire mesh 2 is provided with 3 layers, and the density of the aluminum wire mesh is 20-35 mesh;

[0020] 2) The temperature at the top of distillation tower 1 is controlled at 136°C, and titanium tetrachloride is sent into the distillation tower. Since tin tetrachloride has a lower boiling point than titanium tetrachloride, tin tetrachloride and tin tetrachloride are collected from the top of the distillation tower. The mixture of titanium tetrachloride, titanium tetrachloride is collected at the bottom of the distillation column, and the rectification process reduces the reflux ratio;

[0021] 3) According to the tin content in titanium tetrachloride, control the feed rate, so that the content of titanium tetrachloride and tin tetrachloride at the bottom of the tower can meet t...

Embodiment 2

[0025] A method for reducing titanium tin tetrachloride content, comprising the following steps:

[0026] 1) An aluminum wire mesh 2 is added to the middle of the distillation tower 1, and the aluminum wire mesh 2 is provided with 3 layers, and the density of the aluminum wire mesh is 20-35 mesh;

[0027] 2) The temperature at the top of distillation tower 1 is controlled at 145°C, and titanium tetrachloride is sent into the distillation tower. Since the boiling point of tin tetrachloride is lower than that of titanium tetrachloride, tin tetrachloride and The mixture of titanium tetrachloride, titanium tetrachloride is collected at the bottom of the distillation column, and the rectification process reduces the reflux ratio;

[0028] 3) According to the tin content in titanium tetrachloride, control the feed rate, so that the content of titanium tetrachloride and tin tetrachloride at the bottom of the tower can meet the production requirements of sponge titanium;

[0029] 4) ...

Embodiment 3

[0032] A method for reducing titanium tin tetrachloride content, comprising the following steps:

[0033] 1) An aluminum wire mesh 2 is added to the middle of the distillation tower 1, and the aluminum wire mesh 2 is provided with 3 layers, and the density of the aluminum wire mesh is 20-35 mesh;

[0034] 2) The temperature at the top of distillation tower 1 is controlled at 155°C, and titanium tetrachloride is sent into the distillation tower. Since the boiling point of tin tetrachloride is lower than that of titanium tetrachloride, tin tetrachloride and tin tetrachloride are collected at the top of the distillation tower. The mixture of titanium tetrachloride, titanium tetrachloride is collected at the bottom of the distillation column, and the rectification process reduces the reflux ratio;

[0035] 3) According to the tin content in titanium tetrachloride, control the feed rate, so that the content of titanium tetrachloride and tin tetrachloride at the bottom of the tower ...

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Abstract

The invention relates to a method for reducing the tin content of titanium tetrachloride, which comprises the following steps: adding an aluminum wire mesh in the middle of a distillation tower, controlling the tower top temperature of the distillation tower at 136-155 DEG C, feeding titanium tetrachloride into the distillation tower, collecting a mixture of tin tetrachloride and titanium tetrachloride at the tower top of the distillation tower because the boiling point of tin tetrachloride is lower than that of titanium tetrachloride, and collecting titanium tetrachloride at the tower bottom of the distillation tower, wherein the reflux ratio is reduced in the rectification process. The method has the advantages that the cost is low, a honeycomb zeolite molecular sieve is applied, excessive equipment capital investment is not needed, and equipment is easy to install and manufacture.

Description

technical field [0001] The invention relates to the technical field of chemical production, in particular to a method for reducing the content of titanium tin tetrachloride. Background technique [0002] The currently disclosed methods for reducing the tin content of titanium tetrachloride are mainly chemical methods and physical adsorption methods. CN201811325189 discloses that through trivalent titanium slurry, aluminum powder and refined titanium tetrachloride are mixed and heated for reaction and then distilled to remove tin tetrachloride, but the price of trivalent titanium used in this method is high, and aluminum powder is a flammable and explosive substance , and the final product of the reaction will increase the content of aluminum trichloride. CN2014105560279 discloses a method that passes through a rectification tower, a first condenser, a top product storage tank, a reboiler, a second condenser, a bottom product storage tank and a reflux pump. To remove tin tet...

Claims

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Application Information

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IPC IPC(8): C01G23/02C01G19/08
CPCC01G23/024C01G19/08Y02P10/20
Inventor 赵中友黄敏李汉轻陈连章秦欢吴焕清彭特张朝朝
Owner 仙桃市中星电子材料有限公司
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