Manufacturing method of ethyl acetate
Ethyl acetate is an important organic chemical raw material, which is widely used in medicine, food, plastics, dyes and other fields. Therefore, it is of great significance to study the manufacturing method of ethyl acetate to improve the production efficiency, reduce the cost, and improve the product quality. In this paper, we will introduce the manufacturing method of ethyl acetate, including the principle of reaction, process flow, equipment selection, operation points and so on.
I. Reaction principle
The manufacture of ethyl acetate is realized through the esterification reaction between acetic acid and ethanol. The esterification reaction is an acid-catalyzed reaction, and the commonly used catalyst is sulfuric acid or hydrochloric acid. The reaction equation is as follows:
CH3COOH + C2H5OH → CH3COOC2H5 + H2O
II. Process Flow
The manufacturing process of ethyl acetate mainly includes the following steps:
1. Dosing: add acetic acid and ethanol into the reactor according to a certain proportion.
2. Esterification reaction: Under the action of catalyst, acetic acid and ethanol undergo esterification reaction to produce ethyl acetate and water.
3. Distillation: ethyl acetate and water are separated by distillation to obtain pure ethyl acetate.
4. Refining: Refine the ethyl acetate to remove the impurities.
3. Equipment selection
In the manufacturing process of ethyl acetate, the equipment to be used includes reactor, distillation tower, refining tank and so on. When selecting equipment, it is necessary to make comprehensive consideration according to factors such as production scale, product quality, operation and maintenance.
Four, operation points
1. Control the reaction temperature: esterification reaction is an exothermic reaction, need to control the reaction temperature, to avoid too high a temperature caused by side reactions.
2. Control the amount of catalyst: too much catalyst will lead to equipment corrosion, too little will affect the reaction rate, need to control the appropriate amount.
3. Control the distillation temperature: In the distillation process, it is necessary to control the appropriate temperature to ensure the purity and yield of ethyl acetate.
4. Regular maintenance of equipment: regular inspection and maintenance of equipment to ensure the normal operation of equipment and improve production efficiency.
V. Safe production
In the manufacturing process of ethyl acetate, attention needs to be paid to safe production to avoid fire, explosion and other accidents. The following measures need to be taken:
1. Strictly control the reaction temperature and pressure to avoid the phenomenon of over-temperature and over-pressure.
2. Carry out regular inspection and maintenance of the equipment to ensure that it is safe and reliable.
3. Operators need to be professionally trained and familiar with operating procedures and safety knowledge.
4. The production site needs to be equipped with fire extinguishing equipment and other safety facilities to ensure production safety.
In short, the manufacture of ethyl acetate needs to master the knowledge of reaction principle, process flow, equipment selection, operation points, etc. Meanwhile, it needs to pay attention to the safety of production to ensure that the production process goes on smoothly.
