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[Chemical Knowledge]：Manufacturing method and process of ethylene glycol tert-butyl ether (ETB)

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Ethylene glycol tert-butyl ether (ETB) is an important raw material for chemical production, which is widely used in solvents, cleaning agents, dyes, pesticides and other fields. This article will introduce a manufacturing method of ethylene glycol tert-butyl ether, which uses ethanol and isobutylene as raw materials and is produced by acid catalytic reaction.

1. raw materials and equipment

1. Raw materials: ethanol, isobutylene
2. Equipment: reactor, condenser, fractionator, storage tank, pump, valve and other

2. manufacturing steps

1. Add ethanol to the reactor and heat it to a certain temperature.
2. Isobutene is slowly added with stirring, while sulfuric acid is added dropwise as a catalyst.
3. Control the temperature and pH value during the reaction to make the reaction proceed under the optimum conditions.
4. After completion of the reaction, the reaction solution was distilled to separate ethylene glycol tert-butyl ether and unreacted raw materials.
5. Ethylene glycol tert-butyl ether is purified to remove impurities therein.

3. reaction principle

The manufacturing reaction of ethylene glycol tert-butyl ether is an acid-catalyzed addition reaction, and its reaction equation is as follows:

CH3CH(CH3)2 HOCH2CH2OH → CH3CH(CH3)2 OCH2CH2OH

4. Precautions

1. During the operation, the temperature and pH value should be strictly controlled to ensure the smooth progress of the reaction.
2. Regular maintenance and overhaul of the equipment to ensure the normal operation of the equipment.
3. Operators should be professionally trained and familiar with the operation process and safe operation procedures.

5. environmental protection and safety

1. In the production process, the treatment of waste gas, waste water and solid waste should be strengthened to reduce the impact on the environment.
2. For potential safety hazards, corresponding safety precautions and emergency plans shall be formulated.

6. Economic Benefit Analysis

In the manufacturing process of ethylene glycol tert-butyl ether, the main costs include raw material costs, equipment depreciation, labor costs, etc. By optimizing the production process and improving the utilization rate of equipment, the production cost can be reduced and the economic benefit of the enterprise can be improved. At the same time, as an important chemical raw material, ethylene glycol tert-butyl ether has a wide range of market demand and high added value, so it has a good market prospect.

7. Conclusion

This article introduces a method for manufacturing ethylene glycol tert-butyl ether through acid-catalyzed reaction using ethanol and isobutylene as raw materials. The method has the advantages of simple process, convenient operation and high yield, and has good market prospects and economic benefits. In the actual production process, we should strengthen the optimization of production process and equipment maintenance, improve production efficiency and quality, and strengthen environmental protection and safety management to ensure the smooth progress of production.

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