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

[Chemical Knowledge]：The production and manufacturing method and process of coal-to-olefins.

Read： 957 Time：14months ago Source：Transform the World with Simplicity

1. of the manufacturing method
of coal to olefins Introduction

With the progress of science and technology and the development of the chemical industry, the production technology of coal to olefins has been continuously improved, and has gradually become an important member in the field of raw materials for chemical production. There are a variety of manufacturing methods of coal to olefins, and this article will introduce several common methods.

2. Coal to Olefin Manufacturing Method

1. Methanol to Olefin (MTO)

Methanol to Olefin is a production method that uses methanol as raw material and converts it into low-carbon olefins such as ethylene and propylene through the action of a catalyst. This method has the advantages of easy access to raw materials, simple production process and high product yield, so it has been widely used in actual production. The reaction principle of

methanol to olefins is that under a certain temperature and pressure, methanol undergoes a dehydration reaction under the action of an acidic catalyst to generate dimethyl ether, and the dimethyl ether is further cracked to generate ethylene and propylene. During the reaction, it is necessary to control the appropriate reaction temperature and pressure to ensure the smooth progress of the reaction and the stability of the product quality.

2. Coal to Methanol to Olefin (CTO/MTO)

Coal to Methanol to Olefin is a method that first gasifies coal to make syngas (CO H2), then converts syngas to methanol, and finally produces low-carbon olefins through methanol to olefins. This method converts coal resources into chemicals, realizes the efficient utilization of coal resources, and also provides a new way for the development of coal chemical industry. In the production process of

coal from methanol to olefins, gasification, purification, methanol synthesis and other steps are the key, and it is necessary to ensure that the composition and purity of synthesis gas meet the requirements of subsequent processes. In addition, since the use of multiple catalysts is involved in the entire production process, the activity and selectivity of the catalyst are also important factors affecting product quality and yield.

3. Direct Coal Liquefaction to Olefins (CTL)

Direct Coal Liquefaction to Olefins is a process that converts coal directly into liquid fuels and chemicals. In this method, the coal is heated and pressurized, and a catalyst and hydrogen are added at the same time to convert the organic matter in the coal into a liquid product. Liquid products are further separated and cracked to obtain low-carbon olefins and other chemicals. The advantage of

coal direct liquefaction to olefins is that coal resources can be directly converted into liquid fuels and chemicals without the need for gasification and other steps, so it has high energy efficiency. However, the production process of this method is relatively complicated, which requires high temperature and high pressure conditions, and the activity and selectivity of the catalyst also need to be further improved.

3. conclusion

coal to olefin manufacturing methods are varied, and different methods have different advantages and disadvantages and scope of application. In actual production, it is necessary to select and optimize according to the source of raw materials, product demand, production process and other factors. With the advancement of science and technology and the improvement of environmental protection requirements, the production technology of coal-to-olefins will continue to improve and perfect, providing more reliable and efficient support for the development of the chemical industry.

Previous： The production and manufacturing method and process of coal gas.

Next： The production and manufacturing method and process of coal-to-oil.

News Categories