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[Chemical Knowledge]：Production method and process of ethyl acrylate nitrile

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Ethyl Acrylate Acetonitrile (EAAN) is an important raw material for chemical production, which is widely used in polymer synthesis, medicine, pesticide and other fields. This paper introduces the manufacturing method of ethyl acrylate nitrile in detail, including raw material preparation, reaction process, post-treatment and precautions.

1. raw material preparation

1. Ethyl acrylic acid (Ethyl Acrylate, referred to as EA): As the main reactant, ethacrylic acid should have a high purity to reduce the occurrence of side reactions.
2. sodium cyanide (sodium Cyanide, abbreviated as NaCN): as a cyanide source, it reacts with ethyl acrylic acid to generate ethyl acrylate nitrile.
3. Solvent: Select the appropriate solvent to ensure the uniformity and stability of the reaction system. Commonly used solvents are acetone, acetonitrile, etc.

2. Reaction Process

1. Feeding: Ethyl acrylic acid, sodium cyanide and solvent are added to the reactor in a certain proportion.
2. Stirring: Turn on the stirrer to mix the reactants thoroughly.
3. Temperature increase: The reactor is heated to a predetermined reaction temperature.
4. Reaction: Under the condition of stirring and heating, ethyl acrylic acid reacts with sodium cyanide to produce ethyl ethyl acrylate nitrile.

3. Post-treatment

1. Cooling: After completion of the reaction, the reactor was cooled to room temperature.
2. Filtration: Solid impurities in the reaction system were removed by filtration.
3. Distillation: Ethyl acrylate nitrile and solvent are separated by distillation to obtain a product with high purity.
Precautions for
4.

1. Safety protection: Because sodium cyanide is toxic, the safe operation procedures should be strictly observed during the operation, and professional protective equipment should be equipped to ensure the health and safety of employees.
2. Environmental protection: The waste liquid and waste gas generated in the production process should be treated to meet environmental protection standards and discharged to reduce the impact on the environment.
3. Quality control: strict quality inspection of raw materials, intermediates and products to ensure stable and reliable product quality.

5. optimization and improvement

In order to improve the yield and purity of ethyl ethyl acrylate nitrile, the manufacturing method can be optimized and improved:

1. Refine the raw materials to improve the purity of the raw materials and reduce the occurrence of side reactions.
2. Optimize the reaction conditions, such as temperature, time, feed ratio, etc., to improve the reaction efficiency.
3. Using new catalysts or additives to improve the reaction rate and selectivity.
4. Strengthen equipment maintenance and update to improve equipment operating efficiency and stability.

In short, the manufacturing method of ethyl acrylate nitrile involves multiple links and precautions, and it is necessary to strictly control the quality and safety of each process to ensure product quality and environmental protection requirements. At the same time, continuous optimization and improvement of manufacturing methods can increase the yield and purity of products, reduce costs, and create greater economic and social benefits for enterprises.

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