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[Chemical Knowledge]：Ethylene oxide and downstream production and manufacturing methods and processes.

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Manufacturing Methods
of Ethylene Oxide and Its Downstream Products
1. Introduction

Ethylene oxide is an important organic chemical raw material, which is widely used in the production of various chemicals, such as ethylene glycol, ethanolamine, ethylenediamine, etc. At the same time, ethylene oxide downstream products also have a wide range of uses, including solvents, surfactants, polymer monomers, etc. This article will introduce the manufacturing methods of ethylene oxide and its downstream products. Manufacturing method of

2. ethylene oxide

ethylene oxide can be prepared by various methods, among which the industrial commonly used methods are mainly chlorohydrin method and oxidation method.

1. Chlorohydrin

Chlorohydrin method is based on vinyl chloride and alkali as raw materials, through the addition reaction to generate chlorohydrin, and then through the cyclization, dechlorination and other steps to produce ethylene oxide. This method has mild reaction conditions and simple operation, but it produces more waste liquid and pollutes the environment.

2. Oxidation method

oxidation method is based on ethylene and oxygen as raw materials, through the role of silver catalyst, ethylene oxidation to ethylene oxide. This method has the advantages of easy access to raw materials, mild reaction conditions and high product purity, and is a commonly used preparation method in industry.

3. ethylene oxide downstream product manufacturing method

1. ethylene glycol

ethylene glycol is an important chemical raw material, widely used in the production of polyester fiber, antifreeze, unsaturated polyester resin and other fields. Ethylene glycol can be produced by reacting ethylene oxide with water. This reaction is an exothermic reaction, and it is necessary to control the reaction temperature and to use an acidic catalyst to promote the reaction.

2. ethanolamine

ethanolamine is an organic amine compound, widely used in the production of surfactants, pharmaceutical intermediates and other fields. Ethanolamine can be produced by reacting ethylene oxide with aqueous ammonia. The reaction needs to be carried out at high temperature and high pressure, and it needs to use a catalyst to promote the reaction.

3. Ethylenediamine

Ethylenediamine is an organic compound, which is widely used in the production of nylon, polymers, pesticides and other fields. Ethylenediamine can be produced by reacting ethylene oxide with ammonia gas. The reaction needs to be carried out at high temperature and high pressure, and it needs to use a catalyst to promote the reaction. In addition, ethylenediamine can also be produced by reacting glyoxal with ammonia gas.
Safety and environmental protection
in the manufacturing process of
4.
In the process of manufacturing ethylene oxide and its downstream products, it is necessary to strictly comply with safety and environmental protection requirements to ensure the safety and environmental protection of the production process. Specifically, the following measures need to be taken:

1. Strengthen the management and maintenance of production equipment to ensure the normal operation of equipment and prevent equipment failures from affecting production safety.

2. Strictly control the quality and purity of raw materials to avoid impurities affecting the production process and product quality.

3. Strengthen the safety management of the production site, ensure that employees abide by the safety operation procedures, and prevent the occurrence of production accidents.

4. Strengthen the management and recycling of production wastes to reduce environmental pollution.

5. conclusion

ethylene oxide and its downstream products have broad application prospects in the chemical industry, and mastering its manufacturing methods is of great significance to promote the development of the chemical industry. In the manufacturing process, it is necessary to strengthen safety and environmental management to ensure the smooth progress of the production process, while improving the quality and purity of products, and creating greater economic and social benefits for enterprises.

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