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[Chemical Knowledge]：Production process and preparation method of acetic acid

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Acetic acid is a commonly used organic compound, widely used in various fields, such as pulp and paper, pharmaceutical, cosmetics and so on. So how is acetic acid made? The following is a detailed introduction to the production process and preparation method of acetic acid.

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Production process of 1. acetic acid
the production of acetic acid generally adopts complete chemical technology. Mainly divided into the following three steps:
1. Raw material processing: The raw materials for acetic acid production are mainly ethanol and air, and catalysts and solvents need to be added. These raw materials need to undergo precise processing before they can be used in production.
2. Reaction: the processed raw materials into the reaction kettle, heating and air, after a certain time of reaction, you can get acetic acid.
3. Separation: After obtaining acetic acid, it needs to go through multiple separation, filtration and other processes to finally obtain high-purity acetic acid.

Preparation method of 2. acetic acid
there are many methods for the preparation of acetic acid. Here are two of the most commonly used methods:
1. Ethanol oxidation method
ethanol oxidation is one of the most commonly used methods for the preparation of acetic acid. Specific steps are as follows:
(1) Prepare ethanol, catalyst and solvent.
(2) Put the processed raw materials into the reaction kettle, and react by heating and introducing air.
(3) After a certain period of reaction, acetic acid can be obtained.
(4) The reaction solution is separated and purified by means of filtration, distillation, etc., to finally obtain high-purity acetic acid.
2. Calcium carbonate hydrolysis method
the calcium carbonate hydrolysis method is also a method for preparing acetic acid. Specific steps are as follows:
(1) Put calcium carbonate into the reaction kettle, add appropriate amount of acetic acid, and carry out the reaction.
(2) Promote the reaction by heating and other methods to gradually hydrolyze calcium carbonate to produce acetic acid.
(3) The reaction solution is filtered and separated to finally obtain high-purity acetic acid.
The above are two methods for preparing acetic acid. You can choose the method that suits you according to actual needs.

3. summary:
acetic acid is a very important organic compound, which is widely used in various industries. The production process and preparation method of acetic acid are very critical and require precise operation and control. The method we provide is more commonly used, we can choose according to their own needs for their own methods.

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