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BDO (1,4-butanediol) is an important organic chemical raw material widely used in plastics, fibers, adhesives, pharmaceuticals, and other fields. There are several main manufacturing methods for it: 

1 Acetaldehyde method 

Acetaldehyde method is the process of preparing BDO from acetylene and formaldehyde through reaction steps such as addition, hydrogenation, and oxidation. This method has the advantages of easy availability of raw materials, mild reaction conditions, and high yield, and is widely used in BDO production both domestically and internationally

The specific steps are as follows: acetylene and formaldehyde undergo an addition reaction in alkaline absorption solution to generate 1,4-butynediol, which is then hydrogenated to produce 1,4-butenediol, and finally oxidized to produce BDO

2. Maleic anhydride method 

Maleic anhydride method is the process of preparing BDO from maleic anhydride through reaction steps such as hydrogenation and hydrolysis. This method has the advantages of easy availability of raw materials, mild reaction conditions, and high product purity, but the production cost is high

The specific steps are as follows: the hydrogenation reaction of maleic anhydride generates 1,4-succinic acid, which is then hydrolyzed to produce BDO

3. Butadiene method 

Butadiene method is the process of preparing BDO from butadiene through oxidation, hydrolysis and other reaction steps. This method has the advantages of a wide range of raw material sources and mild reaction conditions, but the production process is more complex and the cost is higher

The specific steps are as follows: butadiene undergoes an oxidation reaction to produce 1,4-dihydroxy-2-butanone, which is then hydrolyzed to produce 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 based on their own situation and market demand. Meanwhile, with the continuous progress of technology and the increasing environmental requirements, new BDO production methods are also emerging, such as biological methods

Regardless of the production method used, strict control of reaction conditions and raw material quality is necessary 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 summary, BDO, as an important organic chemical raw material, 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 based on their own situation and market demand, and strengthen production and environmental management to improve product quality and production efficiency.