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[Chemical Knowledge]：Manufacturing method and process flow of BDO

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BDO(1,4-butanediol) is an important organic chemical raw material, which is widely used in plastics, fibers, adhesives, pharmaceuticals and other fields. Its manufacturing methods are mainly the following:

1. acetylene aldehyde method

acetylene aldehyde method is acetylene and formaldehyde as raw materials, after addition, hydrogenation, oxidation and other reaction steps of BDO. This method has the advantages of easy availability of raw materials, mild reaction conditions and high yield, and is a widely used BDO production method at home and abroad.

specific steps are as follows: acetylene and formaldehyde in the alkaline absorption solution addition reaction to generate 1,4-butynediol, and then through the hydrogenation reaction to generate 1,4-butenediol, and finally through the oxidation reaction to generate BDO.

2. maleic anhydride method

maleic anhydride method is maleic anhydride as raw material, after hydrogenation, hydrolysis and other reaction steps to produce BDO. This method has the advantages of easy availability of raw materials, mild reaction conditions and high product purity, but the production cost is high.

specific steps are as follows: maleic anhydride hydrogenation reaction to generate 1,4-succinic acid, and then through hydrolysis reaction to generate BDO.

3. Butadiene method

Butadiene method is butadiene as raw material, through oxidation, hydrolysis and other reaction steps to produce BDO. This method has the advantages of wide source of raw materials and mild reaction conditions, but the production process is complicated and the cost is high.

specific steps are as follows: butadiene undergoes oxidation to generate 1,4-dihydroxy-2-butanone, and then undergoes hydrolysis to generate BDO.

The above three methods are currently the main BDO production methods, each with its own advantages and disadvantages. Enterprises can choose suitable production methods according to their own conditions and market needs. At the same time, with the continuous progress of science and technology and the continuous improvement of environmental protection requirements, new BDO production methods are also emerging, such as biological methods. No matter which production method is used for

, it is necessary to strictly control the reaction conditions and the quality of raw materials to ensure product quality and production safety. At the same time, strengthening environmental management in the production process and reducing the discharge of waste and pollutants are also important tasks in the field of chemical production.

In conclusion, as an important organic chemical raw material, BDO has broad application prospects in the field of chemical production. Different production methods have their own advantages and disadvantages. Enterprises need to choose suitable production methods according to their own conditions and market demand, and strengthen production management and environmental protection management to improve product quality and production efficiency.

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