Ethyl Acrylate Acetonitrile (EAAN) is an important raw material for the production of chemicals, which is widely used in the fields of polymer synthesis, medicine and pesticide. In this article, the manufacturing method of Ethyl Acrylate Acetonitrile will be introduced in detail, including raw material preparation, reaction process, post-treatment and precautions.
I. Raw material preparation
1. Ethyl Acrylate (EA): as the main reactant, Ethyl Acrylate should have high purity to reduce the occurrence of side reactions.
2. Sodium Cyanide (NaCN): as a cyanide source, react with Ethyl Acrylic Acid to form Ethyl Acrylate Nitrile.
3. Solvent: choose a suitable solvent to ensure the homogeneity and stability of the reaction system, commonly used solvents are acetone, acetonitrile and so on.
2. Reaction process
1. Feeding: add ethyl acrylic acid, sodium cyanide and solvent into the reactor in a certain proportion.
2. Stirring: Turn on the stirrer to mix the reactants fully.
3. Warming up: Heat up the reactor to a predetermined reaction temperature.
4. Reaction: Under the condition of stirring and heating, ethyl acrylic acid reacts with sodium cyanide to form ethyl acrylate nitrile.
3. Post-treatment
1. Cooling: After the reaction, the reactor was cooled to room temperature.
2. Filtration: solid impurities in the reaction system were removed by filtration.
3. Distillation: Separate the ethyl acrylate nitrile and solvent by distillation to get the product with higher purity.
4. Precautions
1. Safety Protection: Since sodium cyanide is toxic, the operation process should strictly follow the safety operation procedures and be equipped with professional protective equipment to ensure the health and safety of employees.
2. Environmental protection: Waste liquid and gas generated in the production process should be treated to meet the environmental standards and then discharged to minimize the impact on the environment.
3. Quality control: Strict quality testing of raw materials, intermediates and products to ensure stable and reliable product quality.
V. Optimization and improvement
In order to improve the yield and purity of ethyl acrylate nitrile, the manufacturing method can be optimized and improved:
1. Refine the raw materials, improve the purity of raw materials and reduce the occurrence of side reactions.
2. Optimize the reaction conditions, such as temperature, time, feeding ratio, etc., to improve the reaction efficiency.
3. Adopt new type of catalyst or additives to improve the reaction rate and selectivity.
4. Enhance equipment maintenance and updating to improve the operating efficiency and stability of the equipment.
In short, the manufacturing method of ethyl acrylate nitrile involves a number of links and considerations, and it is necessary to strictly control the quality and safety of each process to ensure the quality of the product and environmental protection requirements. Meanwhile, continuous optimization and improvement of the manufacturing method can improve the yield and purity of the product, reduce the cost, and create greater economic and social benefits for the enterprise.
