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[Chemical Knowledge]：Manufacturing method and process flow of acetic acid series

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The manufacturing method
of acetic acid series
acetic acid, also known as acetic acid, is an important organic chemical raw material, which is used in the production of many chemicals. There are many manufacturing methods of acetic acid, including ethanol oxidation, low carbon alkane oxidation, acetaldehyde oxidation and acetic acid fermentation. This article will introduce these manufacturing methods in detail.

1. Ethanol oxidation

Ethanol oxidation is one of the main methods for the production of acetic acid, the process is mainly ethanol and air in the presence of a catalyst, high temperature oxidation reaction, the formation of acetic acid. This method has the advantages of easy availability of raw materials and simple process, but it also requires higher reaction temperature and pressure, and the activity of the catalyst has a greater impact on the reaction.

2. Low-carbon alkane oxidation method

Low-carbon alkane oxidation method mainly uses low-carbon alkane (such as ethane, propane, etc.) as raw material, under the action of catalyst, oxidation reaction with air to generate acetic acid. This method has the advantages of abundant raw materials and low cost, but the reaction conditions are relatively harsh and require a high temperature and high pressure environment.

3. acetaldehyde oxidation

acetaldehyde oxidation method is acetaldehyde as raw material, in the role of catalyst, oxidation reaction with oxygen, acetic acid. The advantage of this method is that the by-products in the acetaldehyde production process can be used to improve the utilization of resources, but the activity and selectivity of the catalyst have a greater impact on the reaction.

4. acetic acid fermentation

acetic acid fermentation is the use of microorganisms in anaerobic conditions, the process of converting sugars into acetic acid. This method has the advantages of mild conditions and high selectivity, but the fermentation process takes a long time and the production efficiency is relatively low.

Generally speaking, the manufacturing methods of acetic acid have their own advantages and disadvantages. The choice of which method mainly depends on the source of raw materials, production costs, and environmental protection requirements. In the future, with the continuous progress of science and technology, the production process of acetic acid will be further optimized and improved.

In the production of acetic acid, the selection and use of catalyst is also very important. Different catalysts have a significant effect on the activity and selectivity of the reaction. Therefore, the research and development of efficient and stable catalysts is of great significance for improving the production efficiency and quality of acetic acid.

At the same time, the production process of acetic acid also needs to consider environmental factors. In the production process, some pollutants such as waste gas, waste water and solid waste will be produced, which need to be effectively treated and disposed to avoid harm to the environment and human health.

In addition, with the continuous expansion of downstream applications of acetic acid, the quality and purity requirements for acetic acid are getting higher and higher. Therefore, in the production process of acetic acid, it is necessary to strengthen quality control and testing to ensure that the product meets relevant standards and requirements.

In short, the manufacturing method of acetic acid is a process of continuous development and optimization. In the future, with the continuous progress and application of technology, the production of acetic acid will be more efficient, environmentally friendly and sustainable.

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