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[Chemical Knowledge]：Production and manufacturing method and process flow of dibasic acid ester (DBE)

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1. of manufacturing method
of dibasic acid ester (DBE) Introduction

dibasic acid ester (DBE) is an important chemical raw material, widely used in coatings, inks, adhesives, plastics and other fields. With the continuous growth of market demand, the manufacturing method of DBE has become a hot research topic. This article will introduce a common DBE manufacturing method.

2. raw materials and equipment

1. raw materials: ethanol, acetic acid, catalyst (sulfuric acid)
2. equipment: reactor, condenser, water separator, stirrer, thermometer, pressure gauge and other

3. manufacturing steps

1. feeding: ethanol and acetic acid according to a certain proportion into the reactor, while adding the appropriate amount of catalyst sulfuric acid.
2. Heating reaction: turn on the stirrer and heat the reaction kettle to make the raw materials undergo esterification reaction under the action of the catalyst. The reaction temperature is controlled and maintained for a certain period of time.
3. Water separation: The water generated by the reaction is separated by a water separator to promote the esterification reaction in the positive direction.
4. Post-treatment: After the reaction is completed, heating is stopped, the reaction kettle is cooled, and the reaction solution is post-treated to obtain the DBE product.

4. precautions

1. control reaction temperature: esterification reaction is exothermic reaction, need to control the reaction temperature, avoid excessive temperature caused by side reactions.
2. Water separation operation: The water separator needs to discharge the generated water in time to promote the esterification reaction.
3. the amount of catalyst: the amount of catalyst needs to be appropriate, too much will lead to difficult post-treatment, too little will affect the reaction rate.
4. safety measures: in the production process, it is necessary to strictly abide by the safety operation procedures to avoid accidents. Summary of

5.
Above
is a common manufacturing method of dibasic acid ester (DBE). By controlling the reaction conditions and post-treatment steps, high-quality DBE products can be obtained. In the production process, it is necessary to pay attention to safety and strictly abide by the operating procedures to ensure the smooth progress of production.

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