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[Chemical Knowledge]：Properties and Uses of Coal Tar (High Temperature)

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Coal tar (high temperature) in the chemical production of raw materials in the field of properties and uses

1. Introduction

coal tar is a complex mixture produced by the pyrolysis of coal, with rich chemical composition and unique physical properties. Under high temperature conditions, the properties and uses of coal tar show more characteristics and potentials. In this paper, the nature and use of coal tar (high temperature) will be discussed in depth, in order to provide a useful reference for the development of chemical production raw materials.

2. the nature of coal tar (high temperature)

1. physical properties: high temperature coal tar presents a dark brown, viscous liquid, with good fluidity. Its density and viscosity decrease with increasing temperature, showing typical non-Newtonian fluid characteristics.
2. chemical properties: coal tar is mainly composed of hydrocarbons, containing phenols, naphthalene, anthracene, phenanthrene and other compounds. Under high temperature conditions, the compounds in coal tar will undergo pyrolysis, condensation and other reactions to generate more gas and coke.

3. coal tar (high temperature) use

1. chemical raw materials: coal tar (high temperature) is rich in aromatic hydrocarbon compounds, such as benzene, toluene, xylene, etc., can be used in the production of plastics, synthetic fibers, rubber, dyes, medicine, pesticides and other chemical products.
2. Fuel: Coal tar at high temperature can be used as fuel, such as for combustion furnaces, boilers and other equipment, with high calorific value and combustion efficiency.
3. Carbon materials: Coal tar (high temperature) can be used as raw materials for the preparation of carbon materials, such as graphite electrodes, activated carbon, etc.

4. coal tar (high temperature) in the production of chemicals in the application of

1. plastic production: coal tar aromatic hydrocarbon compounds can be used as raw materials for plastic production, such as phenolic plastic, urea formaldehyde plastic. These plastics have excellent heat resistance, corrosion resistance, electrical insulation and other advantages, widely used in household appliances, automobiles, construction and other fields.
2. Synthetic fiber production: benzene, toluene and other compounds in coal tar can be used as raw materials for synthetic fibers, such as polyester and acrylic. These synthetic fibers have the advantages of high strength, good elasticity and wear resistance, and are widely used in textiles, clothing and other fields.
3. Dye production: naphthalene, anthracene and other compounds in coal tar can be used as raw materials for dye production, such as indigo, anthraquinone and so on. These dyes have the advantages of bright color and good light resistance, and are widely used in printing and dyeing, coatings and other fields.

5. the production and processing of coal tar (high temperature)
The production and processing of
coal tar requires multiple steps, including coal pyrolysis, distillation, separation, refining, etc. Under high temperature conditions, it is necessary to control the reaction temperature and pressure to ensure the quality and yield of coal tar. At the same time, it is also necessary to maintain and maintain the production equipment to ensure the smooth progress of the production process.

6. conclusion

coal tar (high temperature) as an important raw material for chemical production, has rich chemical composition and unique physical properties. Under high temperature conditions, the properties and uses of coal tar show more characteristics and potential, and can be used to produce plastics, synthetic fibers, rubber, dyes, pharmaceuticals, pesticides and other chemical products, as well as fuels and raw materials for the preparation of carbon materials. Therefore, strengthening the research on the properties and uses of coal tar (high temperature) will help to improve the utilization efficiency of raw materials for chemical production and promote the sustainable development of the chemical industry.

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