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Titanium dioxide preparing equipment and oxidation technology process

A technology of titanium dioxide and equipment, which is applied in the field of TiO2 preparation, can solve the problems of fast, difficult and difficult gas phase reaction, and achieve the effects of fast cooling speed, uniform particle size and simple manufacture

Active Publication Date: 2017-07-14
桐乡市佑昌新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oxidation reactor is TiCl 4 Oxidation key equipment, equipment and production technology are complex and difficult
First at high temperature TiCl 4 It is highly corrosive, and has strict requirements on the strength, temperature resistance and corrosion resistance of all materials at temperatures above 1000°C, followed by TiCl 4 , O 2 , AlCl 3 Not only the mixing should be uniform, but also the speed of mixing and injection is very fast. According to domestic and foreign materials, the injection speed is 150-200m / s, so the process and equipment of high-speed mixing are very difficult; and it is necessary to use the control reactant within 0.01-0.05 seconds residence time to adjust the TiO 2 The grain size is also very difficult; due to the high reaction temperature of titanium dioxide chloride, TiCl at high temperature 4 , O 2 It is highly corrosive to equipment, and the gas phase reaction speed is fast under high temperature and high pressure, which is extremely difficult to control. TiO 2 The scarring is in the wall of the device, which is difficult to remove and affects production

Method used

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  • Titanium dioxide preparing equipment and oxidation technology process
  • Titanium dioxide preparing equipment and oxidation technology process
  • Titanium dioxide preparing equipment and oxidation technology process

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Embodiment Construction

[0030] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0031] Such as Figure 1 to Figure 6As shown, the titanium dioxide preparation equipment includes a front-end feed pipe, a counter-spray cooling device and a collecting hopper device, and the front-end feed pipe includes a first feed pipe 1, a second feed pipe 2, and a third feed pipe 3 With the first discharge pipe 6, the spray cooling device includes the fourth feed pipe 10, the fifth feed pipe 11, the sixth feed pipe 12 and the second discharge pipe 13; the first feed pipe 1, the second The feed pipe 2, the third feed pipe 3 and the first discharge pipe 6 communicate, and the first feed pipe 1, the second feed pipe 2, the third feed pipe 3 and the first discharge pipe 6 constitute The shape is cross-shaped; the fourth feed pipe 10, the ...

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Abstract

The invention discloses titanium dioxide preparing equipment. The titanium dioxide preparing equipment comprises a front-end feeding pipe, an opposite-spraying cooling device and an aggregate bin device, wherein the front-end feeding pipe comprises a first feeding pipe, a second feeding pipe, a third feeding pipe and a first discharging pipe; the opposite-spraying cooling device comprises a fourth feeding pipe, a fifth feeding pipe, a sixth feeding pipe and a second discharging pipe; the first feeding pipe, the second feeding pipe and the third feeding pipe are communicated with the first discharging pipe; the fourth feeding pipe, the fifth feeding pipe and the sixth feeding pipe are communicated with the second discharging pipe; the first discharging pipe is connected with the fourth feeding pipe; and the second discharging pipe is communicated with the aggregate bin device. The titanium dioxide preparing equipment is simple in manufacturing, under a high temperature and a high pressure, gas phase reactants are mixed instantly, reaction is full, termination reaction cooling speed is high, TiO2 generated by reaction is not easily scarred in a high-temperature and high-pressure device wall, the generated TiO2 and a cooling medium are clashed and mixed at a high speed, the cooling speed is high, the titanium dioxide preparing equipment has an air flow crushing effect to bonded TiO2, and a product is more uniform in granularity and more stable in quality.

Description

technical field [0001] The present invention relates to TiO 2 The field of preparation, specifically relates to a titanium dioxide preparation equipment and an oxidation process. Background technique [0002] The production of titanium dioxide by the chlorination method is a technological advancement compared to the sulfuric acid method, with high production efficiency, continuous automatic operation, stable product quality, and less "three wastes" directly discharged. The process flow of the chloride method is short, and the main production process includes three parts: the preparation of titanium tetrachloride, the oxidation of titanium tetrachloride and the surface treatment of titanium dioxide. [0003] The oxidation of titanium tetrachloride is the core process of the production of titanium dioxide by the chloride method, TiCl 4 The oxidation of TiCl is a gas phase reaction, the reaction temperature is about 1200 ° C, TiCl 4 Generate TiO 2 The reaction time is only ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/07
CPCC01G23/07
Inventor 杨绍泉
Owner 桐乡市佑昌新材料有限公司
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