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[Chemical Knowledge]：The production and manufacturing method and process of butyl acrylate.

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1. of the manufacturing method
of n-butyl acrylate Introduction

n-Butyl acrylate is an important organic chemical raw material, widely used in polymer synthesis, coatings, adhesives, fibers and other fields. With the continuous development of science and technology, the manufacturing method of n-butyl acrylate has been continuously improved and optimized. This article will introduce a common manufacturing method of n-butyl acrylate.

2. raw materials and equipment

1. raw materials: acrylic acid, n-butanol, catalyst (sulfuric acid or p-toluenesulfonic acid), inhibitor (such as hydroquinone).
2. Equipment: reaction kettle, stirrer, condenser, thermometer, pressure gauge, etc.

3. manufacturing steps

1 ingredients: according to a certain proportion of acrylic acid, n-butanol, catalyst, inhibitor and other raw materials into the reactor.
2. Heating reaction: turn on the stirrer and heat the reaction kettle to increase the temperature of the reaction liquid to a predetermined reaction temperature and maintain a constant temperature reaction for a certain period of time.
3. Dehydration: After the reaction is completed, the reaction solution is cooled to a certain temperature, a certain amount of alkaline absorbent is added to neutralize the remaining acid in the reaction solution, and then subjected to distillation dehydration.
4. Refining: The dehydrated n-butyl acrylate is refined to remove impurities and obtain a product with high purity.
Precautions for
4.

1. Strictly control the reaction temperature and time to prevent side reactions and product quality degradation.
2. Pay attention to the ratio of raw materials and the feeding sequence to ensure the smooth progress of the reaction.
3. In the reaction process to maintain uniform stirring, to prevent local overheating and product agglomeration.
4. During the dehydration process, the dosage and neutralization time of alkaline absorbent should be controlled to avoid excessive neutralization or insufficient neutralization.
5. In the refining process, the sealing of the equipment and the safety of operation should be ensured to prevent the product from being contaminated or causing safety accidents.

5. conclusion The manufacturing method of

n-butyl acrylate involves many links and precautions, and it is necessary to strictly control the conditions of raw materials, equipment, operation and other aspects to ensure product quality and production safety. At the same time, with the continuous development of science and technology, the manufacturing method of n-butyl acrylate is also constantly improving and optimizing, and the work of improving production efficiency, reducing energy consumption and reducing environmental pollution still needs to be further promoted.

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