A kind of 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, large particles, etc., to achieve reduced energy consumption, difficult aggregation, and good dispersion Effect

Active Publication Date: 2022-04-05
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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  • A kind of preparation method of carbon black
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  • A kind of preparation method of carbon black

Examples

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Effect test

Embodiment 1

[0028] The tar containing methyl carbonate and hydroquinone was prepared, wherein the content of methyl carbonate was 1.7% (volume fraction) and the content of hydroquinone was 3‰ (volume fraction). The configured tar is sprayed with a high-pressure jet device in the opposite direction. After the spray, a turbulent fluid system is formed to form nano-atomized droplets, which are sent to the combustion chamber together with the preheated hot air to burn, and the two pairs are controlled. The distance of the tar nozzle 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 at 1700°C, and the generated carbon black is cooled with quench water with a conductivity of 1us / cm. The cooled flue gas enters the bag filter for collection, and after granulation and drying, the finished carbon black is finally obtained.

Embodiment 2

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

Embodiment 3

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

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Abstract

The present invention relates to a kind of preparation method of carbon black, and described preparation method comprises the following steps: (1) the pretreatment of tar: take tar as raw material, add dispersant, structural inhibitor in tar, prepare the treated tar; ( 2) The tar obtained in step (1) is sprayed with a high-pressure jet device in the opposite direction to form a turbulent fluid system to form nano-atomized droplets, and at the same time, it is blown into the combustion chamber with hot air for rapid carbonization reaction, and then enter the reaction chamber for pyrolysis; (3) after pyrolysis, pass through quenching water to cool, collect the generated carbon black, granulate, and dry to prepare the final product. The invention adopts the impingement flow technology, maximizes the energy dispersion through the action of the shearing force, continuously shears and forms tiny tar droplets, thereby utilizing the energy of natural gas with high efficiency, and at the same time, the eddy current shear force generated by the impinging flow can reduce the loss of carbon black. Aggregation increases conversion rates.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to a method for preparing carbon black, in particular to a method for preparing carbon black by adopting an impact flow method in a production process. Background technique [0002] As an inorganic chemical raw material, carbon black has a wide range of applications 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, which has led to the vigorous development of the tire-based rubber industry. The main role of carbon black in the rubber field is as a reinforcing agent and filler. The consumption of the rubber industry accounts for 89.5% of the total output. Although the carbon black market is broad, the current carbon black production technology faces serious pollution and energy consumption problems. The carbon black production technology in the world can be...

Claims

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Application Information

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Patent Type & Authority Patents(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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