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Microporous silica gel preparing flow

A manufacturing process and micro-hole technology, applied in the direction of silicon oxide, silicon dioxide, etc., can solve the problem of insignificant effect, and achieve the effect of improving the utilization rate of the device, shortening the production cycle, and uniform particle size distribution

Inactive Publication Date: 2013-04-17
青岛中能集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the effect of existing technology on particle size distribution is not obvious

Method used

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  • Microporous silica gel preparing flow
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  • Microporous silica gel preparing flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First add 10 liters of 25% sulfuric acid solution into the experimental reaction tower, and then add 6 liters of prepared SiO 2 The sodium silicate solution with a content of 30% is sprayed into the reaction tower for the experiment. Wash in water at ℃, wash with water for 30 hours, then bubble with ammonia for 7 hours, and then press the filter drying stage. The temperature of the oven is 100 ℃, and the drying time is 48 hours. The experimental data are shown in Table 1.

[0020] Table 1 Experimental data table

[0021]

Embodiment 2

[0023] First add 10 liters of 30% sulfuric acid solution into the experimental reaction tower, and then add 6 liters of prepared SiO 2 The sodium silicate solution with a content of 20% is sprayed into the experimental reaction tower, and the temperature inside the tower is 80°C. After aging for 18 hours in an acidic solution with a pH value of 1-3, it enters the experimental water washing tank. Wash in water at ℃, wash with water for 31 hours, then bubble with ammonia for 7 hours, and then press the filter drying stage. The temperature of the oven is 140 ℃, and the drying time is 50 hours. The experimental data are shown in Table 2.

[0024] Table 2 Experimental data table

[0025]

Embodiment 3

[0027] First add 10 liters of 30% sulfuric acid solution into the experimental reaction tower, and then add 6 liters of prepared SiO 2 The sodium silicate solution with a content of 25% is sprayed into the experimental reaction tower, and the temperature in the tower is 75 ° C. After aging for 17 hours in an acidic solution with a pH value of 1-3, it enters the experimental water washing tank. Wash in water at ℃, wash with water for 34 hours, then bubble with ammonia for 7 hours, and then press the filter drying stage. The temperature of the oven is 130 ℃, and the drying time is 50 hours. The experimental data are shown in Table 3.

[0028] Table 3 Experimental data table

[0029]

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PUM

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Abstract

The invention relates to a microporous silica gel preparing flow. The microporous silica gel preparing flow comprises mixing, reacting and rinsing by using an alkali preparing tank, an acid preparing tank, a reaction tower and a rinsing tank according to the following specific steps: preparing a sodium silicate solution with the SiO2 content of 25-35% at the temperature of 25-30 DEG C in silica gel producing equipment through the alkali preparing tank; preparing a sulfuric acid solution with the content of 20-35% at the temperature of 25-30 DEG C in the acid preparing tank; adding the sulfuric acid solution into the reaction tower, adding the prepared sodium silicate solution into the reaction tower, and reacting to form silica gel particles; aging the silica gel particles for 15-18 hours in an acid solution with the pH value of 1-3, and feeding the silica gel particles into the rinsing tank; rinsing the silica gel particles in water of 30-40 DEG C, and soaking the silica gel particles in ammonia for 6-8 hours at the end of rinsing; and performing pressing filtration and drying in a drying box to obtain microporous silica gel.

Description

technical field [0001] The invention belongs to the technical field of silica gel manufacturing, and in particular relates to a microporous silica gel manufacturing process. Background technique [0002] The application fields of silica gel are becoming more and more extensive. As far as the current application is concerned, the application fields of silica gel are mainly developed towards micronization, microporosity and macroporosity. And other application fields have been well used. Microporous silica gel is suitable for coatings, plastics, papermaking, brewing, petrochemical, construction, daily chemical and other industries. It can also be used for leather protection, which can effectively improve the quality of these leather products. . At present, the effect of the existing technology on the particle size distribution is not obvious. Contents of the invention [0003] The present invention overcomes the deficiencies of the prior art, and proposes a microporous sil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/14
Inventor 乔伟光
Owner 青岛中能集团有限公司