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Vacuum crystallization device for titanium dioxide

A technology of vacuum crystallization and titanium dioxide, which is applied in the direction of crystallization separation, solution crystallization, and selection of crystallization auxiliary conditions. It can solve the problems of poor diversion effect of the guide tube, poor helicity of the liquid flow, and influence on the crystallization effect, and achieve large stirring. effect, uniform crystal particle size distribution, crystallization speed and enhanced crystallization effect

Pending Publication Date: 2017-11-17
南京圆点环境清洁技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Deficiencies in the prior art: 1. The unreasonable setting of the material inlet leads to poor helicity of the liquid flow of the crystallization liquid in the clarification area formed between the guide cylinder and the cylindrical baffle, and the crystallization liquid is easy to block at the material inlet, and the material inlet A thicker crystal layer is formed, which is cumbersome to clean and extremely inconvenient to clean; 2. The diversion effect of the guide tube is poor, which affects the subsequent crystallization effect; There is a dead space on the edge of the cylinder

Method used

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  • Vacuum crystallization device for titanium dioxide
  • Vacuum crystallization device for titanium dioxide
  • Vacuum crystallization device for titanium dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 , figure 2 , image 3 As shown, a titanium dioxide vacuum crystallization device includes a crystallization tank 100, and the crystallization tank includes a guide tube 1, a baffle plate 2, a propeller 3, an elutriation tube 4, and a circulation tube 5, and the guide tube is arranged inside the crystallization tank. The flow tube includes an upper cylindrical flow guide tube 11 and a lower conical flow guide tube 12. The inner side of the crystallization tank is provided with a cylindrical baffle, and the lower conical flow guide tube is provided with a stirring paddle, which is connected to a stirring motor. 33. The stirring paddle includes a main paddle 31 and an auxiliary paddle 32. The auxiliary paddle is arranged on the lower side of the main paddle. An elutriation tube is provided at the bottom of the crystallization tank, and a mother liquor outlet 41 and a crystal outlet 42 are arranged at the bottom of the elutriation tank. There is a crysta...

Embodiment 2

[0032] Such as Figure 4 As shown, a titanium dioxide vacuum crystallization device 100, the top of the crystallization tank is connected to a cooling water system 200, and the cooling water system can better promote crystal formation. The circulation pipe is connected with a circulation pump, and a heating device 300 is arranged on the circulation pipe. The heating of the heating device makes it easy for the fine crystals in the reflux liquid to dissolve and form supersaturation, and return to the crystallization tank for recrystallization. And connect the crystal pump 6 at the crystal outlet. The rest of the structure is the same as that of Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a vacuum crystallization device for titanium dioxide. A crystallization tank comprises a flow guide barrel, a baffle, a propeller, an elutriation pipe and a circulation pipe, wherein the flow guide barrel comprises an upper cylindrical flow guide barrel body and a lower conical flow guide barrel body; stirring paddles are arranged in the lower conical flow guide barrel body and comprise main paddles and auxiliary paddles arranged on the lower sides of the main paddles; a mother liquor outlet and a crystal outlet are arranged in the bottom of the elutriation pipe; the upper part of the circulation pipe is connected with a circulating fluid outlet, the lower part of the circulation pipe is connected with a crystalline liquid inlet pipe, a material inlet is arranged on the circulating pipe, and the crystalline liquid inlet pipe is a spiral cyclone pipe. The vacuum crystallization device has the benefits of use convenience, simplicity in operation, good crystallization effect, uniform crystal size, no blind angles during stirring, consistent crystal size and good crystallization effect.

Description

technical field [0001] The invention relates to the technical field of chemical crystallization equipment, in particular to a titanium dioxide vacuum crystallization device. Background technique [0002] The scientific name of titanium dioxide is titanium dioxide (Titanium Dioxide). It is a dye and pigment with a molecular formula of TiO2 and a molecular weight of 79.8658. Titanium dioxide is a very important raw material in industrial production, widely used in coatings, plastics, papermaking, printing ink, chemical fiber, rubber, cosmetics, ceramics, enamel, electronics, food and medicine and other industries. Among the paint products, the most consuming titanium dioxide is architectural paint, accounting for 60% of paint usage. Due to the large demand of the real estate market for coatings, the demand for titanium dioxide has greatly increased due to the hot real estate market. [0003] The preparation methods of titanium dioxide mainly include chlorination method and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D9/02B01F7/16
CPCB01D9/005B01D2009/0086B01F27/192B01F27/80
Inventor 胡家富冯建琳姚义刚杨瑞成朱麟方若雨
Owner 南京圆点环境清洁技术有限公司
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