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The manufacturing method of butene-1 is an important raw material for chemical production, widely used in fields such as plastics, synthetic rubber, and synthetic fibers. With the continuous development of the chemical industry, the demand for butene-1 is also increasing year by year. Therefore, studying the manufacturing methods of butene-1 is of great significance for improving production efficiency, reducing costs, and promoting the development of the chemical industry

2、 The properties and uses of butene-1 

Butene-1 is a colorless, flammable, and slightly odorous gas with the molecular formula C4H8. It has the properties of being insoluble in water and easily soluble in organic solvents. The main use of butene-1 is as a chemical raw material for the production of chemicals such as butadiene, butanol, butyraldehyde, butyric acid, etc. It can also be used to manufacture synthetic rubber, synthetic fibers, plastics, etc

3、 The manufacturing method of butene-1 

1 Petrochemical cracking method is currently the main method for industrial production of butene-1. This method uses naphtha, light diesel, and other raw materials to generate a low-carbon olefin mixture including butene-1 through high-temperature cracking reaction. Then, high-purity butene-1 is obtained through processes such as separation and purification

2. Ethanol dehydrogenation method 

Ethanol dehydrogenation method is a method of preparing butene-1 through ethanol dehydrogenation reaction. This method uses ethanol as the raw material, and under the action of a catalyst, converts ethanol to butene-1 through heating and dehydrogenation reactions. The advantage of this method is that the raw materials are easily available, the reaction conditions are mild, but the yield is low

3. Butane dehydrogenation method 

Butane dehydrogenation method is a method of preparing butene-1 through butane dehydrogenation reaction. This method uses butane as the raw material and, under the action of a catalyst, converts butane to butene-1 through heating and dehydrogenation reactions. The advantage of this method is that the raw materials are cheap and easy to obtain, but the reaction conditions are relatively harsh, requiring high temperature and high pressure

4、 The manufacturing process flow of butene-1 

1 The process flow of producing butene-1 using petrochemical cracking method: 

Raw material pretreatment → Cracking reaction → Cooling separation → Compression → Refining → Product storage 

2 The process flow of producing butene-1 by ethanol dehydrogenation method: 

Ethanol raw material pretreatment → dehydrogenation reaction → cooling separation → refining → product storage 

3 The process flow of producing butene-1 by butane dehydrogenation method: 

Butane raw material pretreatment → dehydrogenation reaction → cooling separation → refining → product storage 

5. Safety production and environmental requirements 

In the production process, strict compliance with safety production norms and environmental requirements is required to ensure the safety and environmental protection of the production process. At the same time, it is necessary to strengthen the treatment and utilization of production waste gas, and reduce environmental pollution

6、 Conclusion: As an important raw material for chemical production, the manufacturing methods of butene-1 mainly include petrochemical cracking, ethanol dehydrogenation, and butane dehydrogenation. Different manufacturing methods have their own advantages, disadvantages, and applicability. Choosing the appropriate manufacturing method based on the actual situation is of great significance for improving production efficiency, reducing costs, and promoting the development of the chemical industry. At the same time, strict adherence to safety production regulations and environmental requirements is required during the production process to ensure the safety and environmental protection of the production process.