Current Location： Home > News > Chemical Knowledge > The production and manufacturing method and process of coal naphtha.

[Chemical Knowledge]：The production and manufacturing method and process of coal naphtha.

Read： 433 Time：13months ago Source：Transform the World with Simplicity

The manufacturing method
of coal naphtha
1. Introduction

With the rapid development of the chemical industry, coal naphtha is an important raw material for the production of chemicals, and its manufacturing method has attracted much attention. Coal-to-naphtha is a high value-added chemical product obtained from coal as raw material through a series of chemical reactions and processing processes. In this paper, the manufacturing method of coal naphtha will be discussed in detail.

2. coal naphtha manufacturing principle

coal naphtha manufacturing principle is mainly through pyrolysis, hydrogenation, catalytic cracking and other processes, coal into naphtha. The specific steps are as follows:

1. Pyrolysis of coal: Under high temperature conditions, organic matter in coal is decomposed by heat to generate gaseous, liquid and solid products. Among them, the liquid product is mainly coal tar.
2. Hydrotreating: Hydrocarbon compounds in coal tar are hydrogenated under the action of catalyst and hydrogen to generate saturated hydrocarbons.
3. Catalytic cracking: Under the action of a catalyst, saturated hydrocarbons undergo cracking reactions to produce small molecular hydrocarbon compounds, namely naphtha.

3. coal-to-naphtha manufacturing process
The
coal-to-naphtha manufacturing process mainly includes the following steps:

1. Coal crushing and drying: the raw coal is crushed to a certain particle size and dried to an appropriate moisture content for subsequent pyrolysis treatment.
2. Pyrolysis of coal: The dried pulverized coal is sent to a pyrolysis furnace for pyrolysis under high temperature conditions to generate coal tar and gas.
3. Hydrotreatment of coal tar: The coal tar is fed into the hydrogenation reactor, and the hydrogenation reaction is carried out under the action of the catalyst and hydrogen to generate saturated hydrocarbons.
4. Catalytic cracking: The hydrotreated saturated hydrocarbon compounds are sent to a catalytic cracking unit, and the cracking reaction is carried out under the action of a catalyst to produce naphtha.
5. Product separation and refining: Through distillation, extraction and other processes, the resulting naphtha is separated and refined from unreacted raw materials and other by-products to obtain qualified coal-based naphtha products.

4. matters needing attention in the process of coal to naphtha manufacturing

1. Control the reaction temperature and pressure: in the process of coal pyrolysis, hydrotreating and catalytic cracking, it is necessary to control the reaction temperature and pressure to ensure the smooth progress of the reaction and the quality of the product.
2. Select the appropriate catalyst: In the process of hydrotreating and catalytic cracking, it is necessary to select the appropriate catalyst to improve the reaction rate and selectivity.
3. Strengthen equipment maintenance and maintenance: A large number of equipment and pipelines need to be used in the production process of coal-to-naphtha, and maintenance and maintenance need to be strengthened to ensure the normal operation and service life of the equipment.

5. conclusion

coal naphtha is an important raw material for chemical production, and its manufacturing method involves multiple process steps and chemical reactions. In the actual production process, it is necessary to control various process parameters, select appropriate catalysts and equipment, and strengthen equipment maintenance and maintenance to ensure product quality and smooth production. At the same time, with the continuous progress and development of technology, the manufacturing method of coal naphtha will continue to improve and optimize, and make greater contributions to the development of the chemical industry.

Previous： The production and manufacturing method and process of coal-based diesel oil.

Next： Manufacturing method and process of light circulating oil

News Categories