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A vaporizer, equipment and method for producing white carbon black

A silica, vaporizer technology, applied in the directions of silicon oxide, silicon dioxide, halogenated silicon compounds, etc., can solve the problems of reducing the quality of silica and the large fluctuation of the specific surface area of ​​silica

Active Publication Date: 2017-08-25
ZHEJIANG KAIHUA SYNTHETIC MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the specific surface area of ​​white carbon black produced by this equipment fluctuates greatly, which reduces the quality of white carbon black

Method used

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  • A vaporizer, equipment and method for producing white carbon black
  • A vaporizer, equipment and method for producing white carbon black

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0118] The molar ratio is methyltrichlorosilane: air: hydrogen = 1:10:1 ratio, methyltrichlorosilane is vaporized through vaporizer 1, and the liquid level of the vaporizer is controlled by a regulating valve to keep it stable so that the liquid level is higher than that of the tube The upper surface is 30mm; the vaporized methyltrichlorosilane gas phase is mixed with the air from the air heater 2, and then mixed with the hydrogen from the hydrogen heater 3 in the first reactor 4 and the second reactor 5 and injected into the The high temperature hydrolysis reaction is carried out in the corresponding first synthesis furnace 6 and the second synthesis furnace 7 . The gas-solid mixture discharged from the first synthesis furnace 6 and the second synthesis furnace 7 is cooled through the first vertical pipe 8 and the second vertical pipe 9, the first horizontal pipe 10 and the second horizontal pipe 11, and the cooled material is respectively The agglomerated white carbon black ...

Embodiment 2

[0125] The technical solution of Example 1 was used to produce white carbon black. The difference was that in this example, the molar ratio of methyltrichlorosilane:air:hydrogen was 1:25:4.

[0126] The present invention detects the obtained white carbon black, and the results show that the acid value of the white carbon black obtained in this example is relatively high, kept between 4.4 and 4.6, and the specific surface area is stable, and the specific surface area is 50m 2 / g~60m 2 / g, the fluctuation is small, and the average particle size is 15 μm to 16 μm.

Embodiment 3

[0128] Adopt the technical scheme of embodiment 1 to produce white carbon black, the difference is that in the present embodiment, methyltrichlorosilane: air: the mol ratio of hydrogen is 1:20:3, and the water yield of synthesis furnace section is 11m 3 / h, the water volume of the standpipe section is 9m 3 / h, the water volume of the horizontal pipe section is 7m 3 / h, the water volume of the first and second sections of the concentrator is 4m respectively 3 / h and 2m 3 / h.

[0129] The present invention detects the obtained white carbon black, and the results show that the acid value of the white carbon black obtained in this example is relatively high, kept between 4.4 and 4.6, and the specific surface area is stable, with a specific surface area of ​​175m 2 / g~185m 2 / g, the fluctuation is small, and the average particle size is 7 μm to 8 μm.

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Abstract

The invention provides a vaporizer, equipment and method for producing white carbon black, the vaporizer includes a column tube vertically arranged at the lower part of the vaporizer; a material gas phase outlet arranged at the top of the vaporizer; arranged at the bottom of the vaporizer The liquid phase inlet of the material; and the liquid level gauge arranged in the vaporizer, the liquid level gauge controls the liquid level in the vaporizer to be 30mm-60mm higher than the upper surface of the tubes. The vaporizer provided by the present invention can be used as a vaporizer for methyltrichlorosilane, and a liquid level gauge is arranged in the vaporizer, and the liquid level gauge controls the liquid level in the vaporizer to be 30 mm to 60 mm higher than the upper surface of the tubes, and the vaporizer There is a certain vaporization buffer space in the upper part, so that the methyltrichlorosilane can be vaporized stably, the vaporization pressure is stable, and the fluctuation of the gas phase flow rate of the methyltrichlorosilane is reduced, so that the fluctuation of the specific surface area of ​​the obtained white carbon black is small, Improves the quality of silica.

Description

technical field [0001] The invention relates to the technical field of inorganic fine chemicals, in particular to a vaporizer, equipment and method for producing white carbon black. Background technique [0002] White carbon black is the general term for white powdery X-ray amorphous silicic acid and silicate products, mainly referring to precipitated silica, fumed silica, ultrafine silica gel and aerogel, including powdered Synthesis of aluminum silicate and calcium silicate, etc. Silica is a porous substance whose composition can be SiO 2 ·nH 2 O represents, where nH 2 O exists in the form of surface hydroxyl, high temperature resistance, non-flammable, tasteless, odorless, and has good electrical insulation. As an environmentally friendly additive with excellent performance, silica is mainly used in the fields of rubber products (including high-temperature vulcanized silicone rubber), textiles, papermaking, pesticides, and food additives. [0003] According to the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/12C01B33/107
Inventor 廖端友翁卫红汪玉林李巧涂俊宏郑云峰
Owner ZHEJIANG KAIHUA SYNTHETIC MATERIAL
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