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Production device and method of pseudo-boehmite

A pseudo-boehmite and production device technology, which is applied in the field of pseudo-boehmite production devices, can solve the problems of large fluctuations in product quality, long reaction time, and small production capacity, so as to suppress spontaneous hydrolysis reactions and realize continuous The effect of chemical production and promotion of neutralization reaction

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

AI Technical Summary

Problems solved by technology

The above method adopts the direct introduction of CO into the reaction device 2 It is decomposed into glue, so there are the following disadvantages: the process equipment is backward, the automation level is low, and the labor efficiency is low; the traditional decomposition tank is harmful to CO 2 Low absorption rate, small production capacity; long reaction time, large fluctuations in product quality; easy scarring of production equipment, short operating cycle; difficult to achieve continuous production
However, it is still difficult for the above-mentioned reactors to achieve stable product quality and continuous production

Method used

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Examples

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Embodiment 1

[0088] In Examples 1-5, the carbon dioxide gas used is pure carbon dioxide gas. For other process conditions, see Table 1. For the performance parameters of the obtained pseudo-boehmite, see Table 2. The XRD pattern of the pseudo-boehmite prepared in Example 1 is shown in figure 2 .

[0089] Table 1

[0090]

[0091]

[0092] Table 2

[0093] performance parameters Example 1 Example 2 Example 3 Pore ​​volume V(ml / g) 0.35 0.40 0.41 Specific surface area (m 2 / g)

440.50.33 387.80 347.56

[0094] The performance parameters of the pseudo-boehmite obtained in Examples 1-3 have little change, which shows that the device and method of the present invention can obtain pseudo-boehmite products with stable quality.

[0095] 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 h...

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Abstract

The invention discloses a production device of pseudo-boehmite and a method thereof. The production device comprises a gel-forming device which comprises a meta-aluminate supply unit, a carbon dioxide supply unit and an inorganic membrane reactor. The inorganic membrane reactor comprises a shell and an inorganic membrane component. The inorganic membrane component is arranged inside the shell and is in seal connection with the shell. The meta-aluminate supply unit is used for supplying a meta-aluminate solution to the inorganic membrane reactor. The carbon dioxide supply unit is used for supplying carbon dioxide gas to the inorganic membrane component. The inorganic membrane component is used for containing carbon dioxide gas and diffusing the carbon dioxide gas into the meta-aluminate solution in the cavity. By the device and the method, pseudo-boehmite of stable quality can be produced.

Description

technical field [0001] The invention relates to a production device and method of pseudo-boehmite, in particular to a device and method for producing pseudo-boehmite 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 water co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/14
Inventor 史建公张文平刘志坚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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