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[Chemical Knowledge]：Manufacturing method and process of carbon black

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In the field of raw materials for chemical production, carbon black is manufactured by a variety of methods, including furnace method, tank method, thermal cracking method and acetylene black method. This article will introduce these manufacturing methods in detail, so that readers can fully understand the production process of carbon black.

1. furnace method

furnace method is the main method of producing carbon black, and can be divided into oil furnace method, gas furnace method and oil-gas mixed burning method. The oil furnace method is based on fuel oil as raw material, which is burned in the furnace to generate carbon black. The gas furnace law uses natural gas or coal gas as the main raw material to produce carbon black through combustion. The oil-gas co-firing law combines the characteristics of the oil furnace method and the gas furnace method, and can use fuel oil and natural gas or coal gas as raw materials at the same time.

1. The process of producing carbon black by oil furnace method includes the steps of raw oil atomization, combustion, cracking, polycondensation and carbon black particles. After the raw oil is atomized at high temperature, tiny oil droplets are formed, which are burned and cracked in the air to generate carbon black.
2. The gas furnace law is to mix natural gas or coal gas with air and introduce it into the combustion chamber for combustion to generate carbon black. The production process of the gas furnace method is relatively simple and easy to operate, but the output is low.
3. The oil-gas mixed combustion method combines the advantages of the oil furnace method and the gas furnace method, and can flexibly adjust the ratio of oil and gas according to market demand and raw material prices to achieve the best economic benefits.

2. channel method

channel method to produce carbon black mainly uses channel steel as a reactor, the raw oil or natural gas is heated to high temperature, introduced into the channel steel, so that it is cracked to produce carbon black. The production process of the trough method is relatively simple, but the production efficiency is low and the product quality is poor.

3. pyrolysis

pyrolysis is a method of cracking hydrocarbons at high temperatures to produce carbon black under oxygen-free or oxygen-deficient conditions. The carbon black produced by this method has the characteristics of small particle size, large specific surface area and high structure, so it has high value in some special applications.

4. Acetylene Black Method

The acetylene black method is a method of producing carbon black by pyrolysis of acetylene gas. At high temperatures, the acetylene gas undergoes a pyrolysis reaction to produce carbon black and hydrogen. Carbon black produced by acetylene black method has high conductivity and chemical stability, so it is widely used in batteries, electrodes and other fields.

In short, there are various methods for manufacturing carbon black, and each method has its own characteristics and application fields. In actual production, the appropriate manufacturing method can be selected according to factors such as market demand, raw material prices and production costs. At the same time, with the continuous progress of science and technology and the improvement of environmental protection requirements, the carbon black manufacturing process is also constantly improved and optimized to improve production efficiency, reduce energy consumption and reduce environmental pollution.

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