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A kind of method for preparing carbon black

A technology of carbon black and carbon powder, which is applied in the treatment of dyed low-molecular organic compounds, fibrous fillers, etc., can solve the problems of consumption of non-renewable resources, high price of carbon black, high production cost, etc., to save non-renewable resources and improve adsorption Good effect on specific surface area, dispersion and stability

Active Publication Date: 2021-11-02
江西缙禧纳米材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main production processes of carbon black include tank method, furnace method, thermal cracking method, etc. Most of the raw materials required for these methods of preparing carbon black are natural gas, coal tar, anthracene oil, calcium carbide, heavy oil, etc., which will consume a large amount of non-renewable resources. Higher cost, resulting in higher price of carbon black

Method used

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  • A kind of method for preparing carbon black

Examples

Experimental program
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Effect test

Embodiment example 1

[0050] Take 10kg of petroleum coke in the production process of a domestic factory, the main element content is (wt.%): C 90.18, H 3.83, S2.25, N 1.27, O 2.31, crushed to -200 mesh, accounting for 90%, add 200L of 8mol / A mixed solution of L nitric acid and 2mol / L hydrogen peroxide was leached for 10 hours at a leaching temperature of 80°C and a stirring rate of 200r / min. Then filter and wash with 2mol / L ammonia water, adjust the pH value to 7.9, and dry to obtain carbon powder.

[0051] Put the obtained carbon powder into a muffle furnace for calcination, the protective atmosphere is nitrogen, the temperature is 800°C, and the time is 3h. Put the calcined carbon powder into a high-speed kneader, and then add 1% of the mass of the carbon powder The titanate modifier was started to knead in a high-speed kneader, the kneading temperature was 160°C, and the kneading time was 75 minutes, and then transferred to an ultrafine mill for ultrafine pulverization to obtain coke carbon bl...

Embodiment example 2

[0054] Take 20kg of petroleum coke in the production process of a domestic factory, the main element content is (wt.%): C 84.36, H 3.393, S 6.602, N 1.500, O 4.147, crushed to -200 mesh, accounting for 90%, add 300L of 6mol / L The mixed solution of nitric acid and 2mol / L hydrogen peroxide was leached for 8 hours under the condition that the leaching temperature was 70°C and the stirring speed was 200r / min. Then filter and wash with 2mol / L ammonia water, adjust the pH value to 8.2, and dry to obtain carbon powder.

[0055] Put the obtained carbon powder into a muffle furnace for calcination, the protective atmosphere is nitrogen, the temperature is 800°C, and the time is 2.5h. Put the calcined carbon powder into a high-speed kneader, and then add 2 % stearic acid modifier, start the high-speed kneader kneading, the kneading temperature is 150 ℃, and the kneading time is 70min, then transfer to the superfine pulverizer and carry out superfine pulverization, obtain coke carbon bla...

Embodiment example 3

[0058] Take 30kg of petroleum coke in the production process of a domestic factory, the main element content is (wt.%): C 86.56, H 3.396, S 5.602, N 1.3032, O 3.946, crushed to -200 mesh to account for 90%, add 600L of 6mol / L The mixed solution of nitric acid and 2mol / L hydrogen peroxide was leached for 8 hours at a leaching temperature of 75°C and a stirring rate of 200r / min. Then filter and wash with 2mol / L ammonia water, adjust the pH value to 7.7, and dry to obtain carbon powder.

[0059] Put the obtained carbon powder into a muffle furnace for calcination, the protective atmosphere is nitrogen, the temperature is 800°C, and the time is 2h. Put the calcined carbon powder into a high-speed kneader, and then add 2% of the mass of the carbon powder Phosphate ester and titanate modifier whose mass is 1% of carbon powder mass, start high-speed kneader kneading, kneading temperature is 180 ℃, kneading time is 80min, then transfer to superfine pulverizer for superfine pulverizati...

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Abstract

The invention relates to a method for preparing carbon black, in particular to a method for preparing carbon black by using petroleum coke as a raw material, and belongs to the technical field of carbon black. The method for preparing carbon black of the present invention comprises the following steps: S1, crushing petroleum coke, leaching in a mixed solution of acid and hydrogen peroxide, filtering, washing, and drying to obtain carbon powder; S2, using the carbon obtained in S1 The powder is calcined in a protective atmosphere, then a modifier is added, kneaded and ground to obtain carbon black; the carbon content in the petroleum coke is greater than 80 wt%. The invention utilizes petroleum coke to produce carbon black, saves non-renewable resources required in the traditional carbon black production process, and reduces the production cost of carbon black. The properties of the carbon black prepared by the invention are superior to those of the N330 carbon black on the market, and its physical properties are greatly improved after being filled into tire rubber.

Description

technical field [0001] The invention relates to a method for preparing carbon black, in particular to a method for preparing carbon black by using petroleum coke as a raw material, and belongs to the technical field of carbon black. Background technique [0002] Carbon black is the main filler and reinforcing agent in the rubber industry. At present, the consumption of carbon black in the rubber industry accounts for 94% of the total consumption, of which 60% is used to make tires. The addition of carbon black can endow rubber products with a series of excellent properties, such as the improvement of tensile strength, hardness and wear resistance. At present, the main production processes of carbon black include tank method, furnace method, thermal cracking method, etc. Most of the raw materials required by these methods for preparing carbon black are natural gas, coal tar, anthracene oil, calcium carbide, heavy oil, etc., which will consume a large amount of non-renewable r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/48C09C3/08C09C1/56
CPCC09C1/48C09C1/56C09C3/08
Inventor 仲奇凡肖劲犹子涵刘晋麟张秀珍
Owner 江西缙禧纳米材料有限公司
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