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[Chemical Knowledge]：Propanol manufacturing method and process flow

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Propanol manufacturing method

1. Introduction

Propanol is an important organic chemical raw material, widely used in medicine, pesticides, spices, solvents and plastics and other fields. With the continuous development of science and technology, the manufacturing method of propanol is constantly improved and optimized, which improves the production efficiency, reduces the cost, and further promotes the application of propanol in various fields. This article will introduce the manufacturing method of propanol in detail.

2. the properties and uses of propanol

propanol is a colorless, transparent, flammable, pungent odor liquid, with strong hydrophilic, can be miscible with water, ethanol, ether and other solvents. Propanol has three isomers, namely n-propanol, isopropanol and tert-butanol, of which n-propanol and isopropanol are widely used. Propanol is mainly used in the production of solvents, plasticizers, stabilizers, antioxidants, surfactants, etc., can also be used in the manufacture of pharmaceuticals, pesticides, spices and other fine chemicals.

3. Propanol Manufacturing Method

1. Propylene hydration
Propylene hydration is one of the main methods for the manufacture of propanol. The method uses propylene and water as raw materials, under the action of acidic catalyst, through hydration reaction to produce propanol. The hydration of propylene has been widely used because of its mild reaction conditions, simple operation and low production cost. However, this method also produces some by-products, such as acetone, propionaldehyde, etc., which need to be separated and purified.

2. Ethylene Oxo Synthesis
Ethylene Oxo Synthesis is a more advanced method of manufacturing propanol. The method uses ethylene, carbon monoxide and hydrogen as raw materials, under the action of a catalyst, through a carbonylation reaction to produce propionaldehyde, and then through a hydrogenation reaction to produce propanol. This method has the advantages of high atomic utilization rate, less by-products and high product quality, but the catalyst cost is high, and it needs to be regenerated and replaced regularly.

3. Acrylate hydrogenation
Acrylate hydrogenation is a method for the manufacture of propanol using acrylate and hydrogen as raw materials. In this method, the acrylate is first mixed with hydrogen, and then hydrogenated under the action of a catalyst to produce propanol. This method has the advantages of easy access to raw materials, mild reaction conditions and high product quality, but the activity of the catalyst will be inhibited, and regular regeneration and replacement are required. The manufacturing process of

4. propanol
The manufacturing process of
propanol mainly includes the steps of raw material pretreatment, reaction, separation and purification. Specifically, the raw materials need to be pretreated first, such as desulfurization, dehydration, etc., to ensure the smooth progress of the reaction. Then, the reaction is carried out in the presence of a catalyst to produce propanol and by-products. After the reaction, the product needs to be separated and purified to obtain a high-purity propanol product.
Precautions in the manufacturing process of
5. propanol

In the manufacturing process of propanol, the following matters need to be paid attention to:

1. Strictly control the reaction conditions, such as temperature, pressure, catalyst dosage, etc., to ensure the smooth progress of the reaction And the quality of the product;
2. Strict quality inspection and control of raw materials and products to ensure the quality and purity of the product;
3. Strengthen equipment maintenance and maintenance to ensure the normal operation and service life of equipment;
4. Strengthen safety production management, comply with relevant regulations and standards, and ensure safety and environmental sanitation in the production process.

6. Conclusion

In short, there are many manufacturing methods of propanol, and different methods have different advantages and disadvantages and scope of application. In the actual production process, it is necessary to select the appropriate manufacturing method according to the specific situation, and strictly control the reaction conditions and product quality to ensure the production efficiency and product quality of propanol.

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