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[Chemical Knowledge]：Properties and Uses of Coal to Aromatic Hydrocarbons

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The properties and uses
of coal-to-aromatics
1. Introduction

Coal-to-aromatics is an important raw material for chemical production and has a wide range of applications. With the continuous progress of science and technology, the production technology of coal to aromatics has also been continuously improved, and has become an indispensable part of the modern chemical industry. This article will detail the nature and use of coal-based aromatics.

2. coal aromatics properties

1. physical properties

coal aromatics is a colorless transparent or slightly yellow liquid, with a special aromatic smell. It is not easily soluble in water, but can be miscible with many organic solvents. The boiling point of coal aromatics is higher, generally between 100-200 ℃.

2. chemical properties

coal aromatics has high chemical stability, can resist the general acid, alkali and oxidant corrosion. At the same time, it also has good thermal stability and can be used at high temperatures. The aromatic ring structure of coal-based aromatics makes it have good reactivity, and can undergo substitution, addition, polymerization and other reactions.

3. coal aromatics use

1. Production of plastics and synthetic rubber

Coal aromatics can be used as raw materials for the production of plastics and synthetic rubber, such as styrene, acrylonitrile and so on. These compounds can be further polymerized into polymer materials, widely used in packaging, construction, automotive, electronics and other fields.

2. Production of dyes and pharmaceutical intermediates

of coal aromatics can also be used to produce dyes and pharmaceutical intermediates raw materials, such as aniline, nitrobenzene and so on. These compounds can be further reacted to generate various dyes and drugs to meet the needs of different fields.

3. Production solvent and cleaning agent

coal aromatics has good solubility and chemical stability, can be used as a solvent and cleaning agent. For example, benzene, toluene, and the like can be used as a solvent for paints, inks, and the like, and can also be used for cleaning machines, parts, and the like.

4. coal to aromatics production technology

coal to aromatics production technology mainly has two kinds: one is the coking method, the other is the gasification method. The coking method is to coke coal at high temperature to obtain coke oven gas, and then obtain aromatics through catalytic cracking and other methods; the gasification method is to gasify coal at high temperature and high pressure to obtain synthesis gas (a mixture of carbon monoxide and hydrogen), and then through synthesis Reaction and other methods to obtain aromatics. These two methods have their own advantages and disadvantages, and the suitable production technology can be selected according to the actual situation.

5. conclusion

coal aromatics as an important chemical production raw material, has a wide range of applications and good market prospects. With the continuous progress of science and technology and the continuous improvement of production technology, the application field of coal-to-aromatics will be further expanded, injecting new vitality into the development of the chemical industry.

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