Preparation method of carbon black

A technology of carbon black and structural inhibitors, applied in the direction of fibrous fillers, etc., can solve the problems of easy aggregation of carbon black into blocks, low energy utilization rate, unevenness, etc., to reduce energy consumption, not easy to aggregate, and increase reactivity Effect

Active Publication Date: 2021-05-28
SHANDONG LINK SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the carbon black produced in the process of producing carbon black by the oil furnace method is easy to aggregate into blocks, the energy utilization rate is not high in the production process, and the spray particles of the fan surface of a single gun head are large and uneven. This application uses a high-pressure jet device. Utilize impinging flow technology to generate turbulent flow through impinging flow, use turbulent shearing force to maximize energy dispersion, and continuously shear to form tiny tar droplets, so as to use natural gas energy efficiently and prepare carbon black of different sizes

Method used

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  • Preparation method of carbon black
  • Preparation method of carbon black

Examples

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Effect test

Embodiment 1

[0028] Configure tar containing methyl carbonate and hydroquinone, wherein the content of methyl carbonate is 1.7% (volume fraction), and the content of hydroquinone is 3‰ (volume fraction). The configured tar is sprayed with a high-pressure jet device in the opposite direction, and a turbulent fluid system is formed after the spraying, so that it forms nano-atomized droplets, which are sent into the combustion chamber together with the preheated hot air to burn, and the two pairs of The tar nozzle distance is 1mm, and the injection pressure is 1MPa. After the combustion reaction is completed, it is sent to the reaction chamber, and is pyrolyzed to form carbon black under the condition of 1700 ° C. The generated carbon black is cooled by quenching water with a conductivity of 1 us / cm. The cooled flue gas enters the cloth bag filter for collection, and finally produces the finished carbon black after granulation and drying.

Embodiment 2

[0030] Prepare tar containing ethyl acetate and hydroquinone, wherein the content of ethyl acetate is 2.6% (volume fraction), and the content of hydroquinone is 18‰ (volume fraction). The configured tar is sprayed with a high-pressure jet device in the opposite direction, and a turbulent fluid system is formed after the spraying, so that it forms nano-atomized droplets, which are sent into the combustion chamber together with the preheated hot air to burn, and the two pairs of The tar nozzle distance is 2mm, and the injection pressure is 2MPa. After the combustion reaction is completed, it is sent to the reaction chamber. Under the condition of 1600°C, it is pyrolyzed to form carbon black, and the generated carbon black is cooled by quenching water with a conductivity of 2us / cm. The cooled flue gas enters the cloth bag filter for collection, and finally produces the finished carbon black after granulation and drying.

Embodiment 3

[0032] Configure tar containing ethyl carbonate and dopamine, wherein the ethyl carbonate content is 2.1% (volume fraction), and the dopamine content is 13‰ (volume fraction). The configured tar is sprayed with a high-pressure jet device in the opposite direction, and a turbulent fluid system is formed after the spraying, so that it forms nano-atomized droplets, which are sent into the combustion chamber together with the preheated hot air to burn, and the two pairs of The tar nozzle distance is 2mm, and the injection pressure is 3MPa. After the combustion reaction is completed, it is sent to the reaction chamber, and under the condition of 1600°C, it is pyrolyzed to form carbon black, and the generated carbon black is cooled by quenching water with a conductivity of 6us / cm. The cooled flue gas enters the cloth bag filter for collection, and finally produces the finished carbon black after granulation and drying.

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Abstract

The invention relates to a preparation method of carbon black. The method comprises the following steps: (1) pre-treating tar, wherein tar is used as a raw material, and is added with a dispersing agent and a structure inhibitor to prepare treated tar; (2) carrying out opposite jetting on the tar obtained in the step (1) by adopting a high-pressure jet device in a reverse direction to form a turbulent fluid system after opposite jetting, enabling the turbulent fluid system to form nano atomized liquid drops, blowing the nano atomized liquid drops into a combustion chamber along with hot air, rapidly carrying out carbonization reaction, and then feeding the nano atomized liquid drops into a reaction chamber to carry out pyrolysis; and (3) after pyrolysis, introducing quenching water for cooling, collecting generated carbon black, granulating, and drying to obtain a final product. According to the invention, the impinging stream technology is adopted, energy is dispersed to the maximum extent under the action of shearing force, and tiny tar liquid drops are formed through continuous shearing, so that the natural gas energy is efficiently utilized, and the vortex shearing force generated by the impinging stream can reduce carbon black aggregation so as to improve the conversion rate.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method for preparing carbon black, in particular to a method for preparing carbon black by adopting an impinging flow method in the production process. Background technique [0002] As an inorganic chemical raw material, carbon black is widely used in people's daily life. Due to the rapid development of the world economy and transportation, people's demand for high-end products such as automobiles is increasing day by day, which has led to the vigorous development of the rubber industry mainly based on tires. The main role of carbon black in the field of rubber is as a reinforcing agent and filler agent, its consumption in the rubber industry accounts for 89.5% of the total output. Although the carbon black market is vast, the current carbon black production technology is facing serious pollution and energy consumption problems. Worldwide carbon black pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/50
CPCC09C1/50
Inventor 吴晓强吴晓林刘红亮殷鹏刚刘彩艳
Owner SHANDONG LINK SCI & TECH CO LTD
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