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Environment-friendly white carbon black preparation method

A white carbon black and environmental protection technology, applied in the field of white carbon black technology, can solve the problems of low white carbon black yield, high waste water treatment cost, and difficult treatment, so as to overcome uneven heating, improve aging process, and enhance BET. The effect of specific surface area

Active Publication Date: 2018-10-26
界首市众鑫科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What this application intends to solve is to provide an environmentally friendly white carbon black preparation method to solve the problems of low yield and high pollution rate of white carbon black prepared by precipitation method in the prior art;
[0005] Another technical problem to be solved in this application is to provide a primary sedimentation tank to solve the problems of high wastewater treatment cost and difficult treatment in the prior art;

Method used

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  • Environment-friendly white carbon black preparation method

Examples

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Effect test

Embodiment 1

[0051] A preparation method of environment-friendly white carbon black, comprising the following steps:

[0052] S1: Add solid sodium silicate to the dissolving device, add water and seal the dissolving device, feed steam until the steam pressure in the dissolving device reaches 120 cm mercury column, and stop when all the sodium silicate is dissolved, forming a specific gravity of 1.37 g / cm 3 dilute sodium silicate solution, and put the above dilute sodium silicate solution into the reactor;

[0053] S2: Slowly transport 98% concentrated sulfuric acid through the pipeline to the dilution tank for dilution to form a specific gravity of 1.27g / cm 3 dilute sulfuric acid, the dilute sulfuric acid formed above 3 / h transported to the reaction kettle, and mixed and stirred when the reaction temperature was controlled at 31°C until the pH of the solution in the reaction kettle reached 7, left to stand for 2 hours to age and generate crystal seeds, and then stirred to form a mixed s...

Embodiment 2

[0059] The content of this embodiment is basically the same as that of Example 1, and the similarities will not be repeated. The difference is that in step S1, solid sodium silicate is added to the dissolving device, water is added and the dissolving device is sealed, and the Steam until the steam pressure in the dissolving device reaches 125cm Hg and stop. After all the sodium silicate is dissolved, the specific gravity is 1.37g / cm 3 dilute sodium silicate solution, and put the dilute sodium silicate solution into the reaction kettle.

Embodiment 3

[0061] The content of this embodiment is basically the same as that of Example 1, and the similarities will not be repeated. The difference is that in step S1, solid sodium silicate is added to the dissolving device, water is added and the dissolving device is sealed, and the Steam until the steam pressure in the dissolving device reaches 150cm Hg and stop, after all the sodium silicate is dissolved, the specific gravity is 1.37g / cm 3 dilute sodium silicate solution, and put the dilute sodium silicate solution into the reaction kettle.

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Abstract

The invention relates to the technical field of white carbon black processes, in particular to an environment-friendly white carbon black preparation method. The method comprises the following steps that 1, solid sodium silicate is added into a dissolution device, water is added, the dissolution device is sealed, steam is introduced until the steam pressure in the dissolution device reaches 120-150-cm mercury column, after all the sodium silicate is dissolved, a dilute sodium silicate solution with the specific gravity of 1.36-1.38 g / cm<3> is formed, and the dilute sodium silicate solution isplaced in a reaction kettle. Therefore, in the environment-friendly white carbon black preparation method, the solid sodium silicate is added into the dissolution device, the water is added, the dissolution device is sealed, the steam is introduced until the steam pressure in the dissolution device reaches 120-150-cm mercury column, the introduced steam can accelerate dissolution of the solid sodium silicate, moreover, when the pressure value of the introduced steam is 120-150 cm, heating of the solid sodium silicate can be accelerated, the molecular activity is improved, and the dissolution cycle is shortened.

Description

Technical field: [0001] The invention relates to the technical field of white carbon black, in particular to a preparation method of environmentally friendly white carbon black. Background technique: [0002] Silica is an important reinforcing material in the rubber industry. Because of its similar microstructure and aggregate morphology to carbon black and similar reinforcing properties in rubber, it is called silica. First generation silica is the traditional or "standard" variety of silica. The second generation is called "high-performance reinforcing silica", namely Hengsil-988 high-performance reinforcing silica, which is a new type of reinforcing material suitable for green tires with high dispersion. Energy saving and environmental protection are two major themes in today's society. [0003] In the process of preparing white carbon black by precipitation method in the prior art, the production cost is relatively high, which is mainly reflected in the treatment cost ...

Claims

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Application Information

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IPC IPC(8): C01B33/12C08K3/36B01D21/02
CPCB01D21/02C01B33/12C01P2006/12C08K3/36
Inventor 刘宁
Owner 界首市众鑫科技服务有限公司
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