1.3-Butanediol (1,3-Butanediol, abbreviated as 1,3-BD) is an important chemical raw material, which is widely used in pharmaceuticals, cosmetics, pesticides, plastics, fibers and other fields. The following are several common manufacturing methods for 1.3-Butanediol:
I. Biological Method
The biological method is the production of 1.3-Butanediol by microbial fermentation. Commonly used microorganisms are E. coli, yeast and so on. The production process of biological method is relatively simple, easy to operate and environmentally friendly, so it is highly favored. The specific steps are as follows:
1. Mix carbon source materials such as glucose and corn starch with nutrients such as nitrogen and phosphorus sources to make fermentation medium.
2. Inoculate microbial strains into the fermentation medium, and control the temperature, pH and other conditions to make microorganisms grow and multiply.
3. The microorganisms will produce 1.3-butanediol in the process of metabolism, and the product of 1.3-butanediol with higher purity will be obtained through separation and purification.
II. Chemical method
The chemical method is the method of synthesizing 1.3-butanediol through chemical reaction. Commonly used raw materials are acetaldehyde, hydrogen, formaldehyde and so on. The specific steps are as follows:
1. Acetaldehyde is hydrogenated with hydrogen under the action of a catalyst to produce butanol.
2. Butanol reacts with water under acidic conditions to form 1.3-butanediol.
3. 1.3-Butanediol is separated from impurities by distillation, rectification and other processes to obtain a product of higher purity.
3. By-product Recovery Method
In some chemical production processes, 1.3-Butanediol will appear as a by-product. By recycling these by-products, 1.3-butanediol can also be obtained. The specific steps are as follows:
1. Collect the by-products containing 1.3-butanediol during the production process.
2. Separate 1.3-butanediol from impurities by distillation, rectification and other processes to obtain a product with higher purity.
The above three methods are all common methods for manufacturing 1.3-butanediol, and each method has its advantages, disadvantages and scope of application. When choosing the manufacturing method, you need to make comprehensive consideration according to the actual situation and choose the most suitable method for you. At the same time, attention needs to be paid to safety, environmental protection and other aspects in the production process to ensure the smooth progress of production.
