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[Chemical Knowledge]：Production and manufacturing method and process of ethyl acetate

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The manufacturing method
of ethyl acetate
Ethyl acetate is an important organic chemical raw material, which is widely used in medicine, pesticide, plastic, spice and other fields. This article will introduce the manufacturing methods of ethyl acetate, including esterification, ethylene synthesis, ethanol carboxylation and so on.

1. esterification

esterification is the main method for the production of ethyl acetate, the principle of which is to esterify acetic acid with ethanol in the presence of an acidic catalyst to produce ethyl acetate and water. The specific steps are as follows:

1. mix acetic acid and ethanol according to a certain proportion, and add acidic catalyst, such as sulfuric acid or hydrochloric acid.
2. At a certain temperature, the esterification reaction is carried out to generate ethyl acetate and water.
3. Ethyl acetate is separated from the reaction solution by distillation to obtain a product with high purity. The advantages of

esterification method are mature process, simple operation and low cost, but it produces more wastewater and needs to be treated.

2. ethylene synthesis method

ethylene synthesis method is through ethylene and acetic acid in the role of catalyst, the addition reaction of ethyl acetate. The specific steps are as follows:

1. Ethylene and acetic acid are mixed according to a certain proportion and passed into a reactor equipped with a catalyst.
2. At a certain temperature and pressure, the addition reaction is carried out to generate ethyl acetate.
3. Ethyl acetate is separated from the reaction solution by distillation to obtain a product with high purity. The advantage of

ethylene synthesis method is that it produces less waste water, but it needs to use a catalyst and the cost is higher.

3. Ethanol carboxylation method

Ethanol carboxylation method is through ethanol and carbon dioxide under the action of a catalyst, carboxylation reaction to generate acetic acid, and then acetic acid and ethanol esterification reaction to generate ethyl acetate method. The specific steps are as follows:

1. Ethanol and carbon dioxide are mixed according to a certain proportion and passed into a reactor equipped with a catalyst.
2. At a certain temperature and pressure, the carboxylation reaction is carried out to generate acetic acid.
3. The acetic acid and ethanol are mixed according to a certain proportion, and the acid catalyst is added to the esterification reaction to generate ethyl acetate and water.
4. Ethyl acetate is separated from the reaction solution by distillation to obtain a product with high purity. The advantage of

ethanol carboxylation method is that carbon dioxide can be used as a raw material, which is environmentally friendly, but it requires the use of a catalyst and is costly.

In short, there are many manufacturing methods of ethyl acetate, and different methods have different advantages and disadvantages and scope of application. In actual production, the appropriate method should be selected according to the specific situation, and the operating conditions of each production link should be strictly controlled to ensure product quality and output. At the same time, strengthen environmental protection work in wastewater treatment and waste recycling to improve the sustainability of the production process.

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