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Production device and method of aluminum hydroxide

An aluminum hydroxide and production device technology, which is applied in chemical instruments and methods, alkali metal aluminate/alumina/aluminum hydroxide preparation, inorganic chemistry, etc., can solve the problem of difficult continuous production of aluminum hydroxide products with stable quality and other problems, to achieve the effect of inhibiting spontaneous hydrolysis reaction and promoting neutralization reaction

Active Publication Date: 2017-05-24
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is still difficult for these reactors to achieve stable product quality and continuous production of aluminum hydroxide.

Method used

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  • Production device and method of aluminum hydroxide
  • Production device and method of aluminum hydroxide
  • Production device and method of aluminum hydroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] See Table 1 for other process conditions of Examples 1-3, and see Table 2 for the performance parameters of the obtained pseudo-boehmite. The XRD pattern of the pseudo-boehmite prepared in Example 1 is shown in figure 2 .

[0074] Table 1

[0075]

[0076] Table 2

[0077] Performance parameters Example 1 Example 2 Example 3 Pore ​​volume V(ml / g) 0.34 0.43 0.50 Specific surface area (m 2 / g)

[0078] The performance parameters of the pseudo-boehmite obtained in Examples 1-3 have little change, which shows that the aluminum hydroxide obtained by the device and method of the present invention can form pseudo-boehmite products with stable quality. In addition, after repeating Examples 1-3 5 times, the variation range of the performance parameters of the obtained pseudo-boehmite is less than 0.5%, which shows that the device and method of the present invention have good repeatability.

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Abstract

The invention discloses a production device and method of aluminum hydroxide. The production device comprises an inorganic membrane reactor, a meta-aluminate supply unit, a carbon dioxide supply unit and a reaction product storage unit. The meta-aluminate supply unit is connected with a liquid-phase inlet of a shell of the inorganic membrane reactor and used for supplying a meta-aluminate solution to a cavity of the inorganic membrane reactor. The carbon dioxide supply unit is connected with a gaseous-phase inlet of an inorganic membrane assembly of the inorganic membrane reactor and used for supplying carbon dioxide to the inorganic membrane assembly of the inorganic membrane reactor. The meta-aluminate solution and the carbon dioxide are reacted in the inorganic membrane reactor to form a reaction product with the aluminum hydroxide. By means of the aluminum hydroxide obtained through the production device and method, pseudo-boehmite stable in quality can be produced.

Description

technical field [0001] The invention relates to a production device and method for aluminum hydroxide, in particular to a device and method for producing aluminum hydroxide by carbonization. Background technique [0002] Alumina powder is often used as a desiccant, adsorbent, catalyst and catalyst carrier in the chemical industry. However, natural or artificially produced alumina monohydrate and alumina trihydrate have low specific surface area, small pore volume, and low activity, so they cannot be used as desiccants, adsorbents, catalysts, and catalyst supports. Pseudo-boehmite has the characteristics of high specific surface area, large pore volume, large pore diameter, and high activity. It is suitable for use as desiccant, adsorbent, and catalyst and catalyst carrier in the fields of petrochemical, fertilizer, and tail gas. Therefore, there is a need to convert alumina monohydrate or alumina trihydrate to pseudoboehmite. Pseudo-boehmite has low crystallinity, higher w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/14
CPCC01F7/142C01P2002/72C01P2006/12C01P2006/14
Inventor 史建公刘志坚张文平张敏宏文建军罗道威史建新蒋绍洋张新军伊红亮钟健李卫红
Owner CHINA PETROLEUM & CHEM CORP
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