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[Chemical Knowledge]：Manufacturing method and process flow of ethylene glycol butyl ether

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Manufacturing method

of ethylene glycol butyl ether Ethylene glycol butyl ether is a commonly used chemical production raw material, widely used in coatings, inks, cleaning agents, printing and dyeing auxiliaries and other fields. This article will introduce the manufacturing method of ethylene glycol butyl ether, including raw material preparation, reaction process, post-treatment and so on.

1. Raw Material Preparation

The main raw materials for the manufacture of ethylene glycol butyl ether are ethylene glycol and n-butanol. In the process of raw material preparation, it is necessary to ensure the purity and quality of raw materials to avoid adverse effects on subsequent reactions.

2. reaction process

the manufacturing process of ethylene glycol butyl ether is mainly realized by esterification reaction. The specific steps are as follows:

1. Ethylene glycol and n-butanol are added into the reaction kettle according to a certain molar ratio, and an appropriate amount of catalyst is added at the same time.

2. heating reaction kettle, the raw materials to heat up to the reaction temperature, and maintain a certain reaction time.

3. During the reaction, it is necessary to constantly monitor the acid value and alcohol content of the reaction liquid to ensure the degree of reaction and product quality.

4. After completion of the reaction, the reaction solution was cooled to room temperature and allowed to stand and separate into layers.

3. post-treatment

post-treatment process mainly includes distillation, dehydration, refining and other links to obtain high-quality ethylene glycol butyl ether products. The specific steps are as follows:

1. Distilling the reaction liquid after standing and layering to separate unreacted raw materials and by-products.

2. The distilled ethylene glycol butyl ether is subjected to a dehydration treatment to remove moisture therefrom.

3. Refine the dehydrated glycol butyl ether to further improve the purity and quality of the product.
Precautions for
4.

In the process of manufacturing ethylene glycol butyl ether, the following matters need to be paid attention to:

1. Strictly control the quality and purity of raw materials to avoid adverse effects on the reaction.

2. Control the reaction temperature and time to ensure the degree of reaction and product quality.

3. In the post-processing process, it is necessary to ensure the cleanliness and tightness of the equipment to avoid product contamination or loss.

In short, the manufacturing process of ethylene glycol butyl ether requires strict control of the process parameters and product quality of each link to ensure that high-quality chemical production raw materials are finally obtained.

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