Sedimentation tank for treating process wastewater produced by preparation of white carbon black with precipitation method

A sedimentation tank and silica technology, which is applied in the field of silica technology, can solve the problems of low yield of silica, high cost of wastewater treatment, and difficulty in treatment, so as to overcome uneven heating, improve aging process, enhance Effect of BET specific surface area

Active Publication Date: 2018-11-16
界首市众鑫科技服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What this application intends to solve is to provide a 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 settling tank for the treatment of white carbon black process wastewater prepared by precipitation, so as to solve the problems of high wastewater treatment cost and difficult treatment in the prior art

Method used

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  • Sedimentation tank for treating process wastewater produced by preparation of white carbon black with precipitation method
  • Sedimentation tank for treating process wastewater produced by preparation of white carbon black with precipitation method
  • Sedimentation tank for treating process wastewater produced by preparation of white carbon black with precipitation method

Examples

Experimental program
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Effect test

Embodiment 1

[0050] A preparation method of white carbon black, comprising the following steps:

[0051] 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;

[0052] 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 solution;

[0053] S3...

Embodiment 2

[0058] 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

[0060] 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 a sedimentation tank for treating process wastewater produced by preparation of white carbon black with aprecipitation method. The sedimentation tank comprises a primary sedimentation tank and a secondary sedimentation tank, a feed port used for feeding quicklime is formed in the right end of the primary sedimentation tank, a water inlet of a first pipe is arranged at the upper end of the feed port, and the problems that water in the primary sedimentation tank rolls over up and down, the sedimentation effect is poor and the sedimentation period is long caused by production of a large amount of heat due to direct contact of the quicklime with wastewater are solved; a buffer mechanism is arrangedin the secondary sedimentation tank and comprises a bearing platform, a conveying channel is formed in the lower end of a barrier plate and located in a middle suspension layer of the secondary sedimentation tank, impact on inside of the outside secondary sedimentation tank is avoided, a flow-in supernatant liquid is conveyed to the middle suspension layer of the secondary sedimentation tank by the conveying channel, so that a secondary supernatant liquid is not interfered, and the sedimentation effect is ensured.

Description

Technical field: [0001] The invention relates to the technical field of white carbon black technology, in particular to a sedimentation tank for treating white carbon black process wastewater prepared by precipitation. 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 i...

Claims

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Application Information

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IPC IPC(8): B01D21/02C01B33/12C01F11/46
CPCB01D21/02C01B33/12C01F11/46C01P2006/12C01P2006/19C01P2006/80
Inventor 刘宁
Owner 界首市众鑫科技服务有限公司
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