Manufacturing Method of Methacrylonitrile
Methacrylonitrile (MAN) is an important organic chemical raw material, which is widely used in synthetic fibers, plastics, rubber and other fields. In this paper, we will introduce the manufacturing method of Methacrylonitrile, including raw material preparation, reaction process, post-treatment and so on.
I. Raw material preparation
The manufacture of methacrylonitrile requires the following raw materials: acrylonitrile, methanol and catalyst. Among them, acrylonitrile is the main raw material, methanol participates in the reaction as a reactant, and catalyst is used to accelerate the reaction process. In order to ensure the smooth progress of the reaction, the raw materials need to be strictly quality controlled and proportioned.
II. Reaction process
The manufacture of methacrylonitrile mainly adopts the ester exchange method, the specific steps are as follows:
1. Mix acrylonitrile and methanol according to a certain proportion, add the catalyst, and send it into the reactor after stirring evenly.
2. Under a certain temperature and pressure, acrylonitrile and methanol undergo an ester exchange reaction to produce methacrylonitrile and water.
3. Temperature and pressure need to be controlled during the reaction to ensure the smooth progress of the reaction and the quality of the product.
4. By separating and purifying the reaction solution, the higher purity methacrylonitrile product is obtained.
3. Post-treatment
After the reaction is finished, the reaction solution needs to be post-treated to obtain the methacrylonitrile product that meets the requirements. The specific steps are as follows:
1. Send the reaction liquid into the distillation tower, and separate methacrylonitrile and water by distillation.
2. Refining the methacrylonitrile to remove the impurities and water therein to obtain a product with higher purity.
3. Treat the wastewater to meet the requirements of environmental protection.
4. Precautions
In the manufacturing process of methacrylonitrile, the following matters need to be noted:
1. Strictly control the quality and proportion of raw materials to ensure the smooth progress of the reaction and the quality of the products.
2. Control the reaction temperature and pressure to avoid the occurrence of side reaction and decomposition of products.
3. Carry out regular maintenance and upkeep of the equipment to ensure the normal operation and service life of the equipment.
4. Strengthen the safety production management, comply with the relevant regulations and rules to ensure the safety and stability of the production process.
In short, the manufacture of methacrylonitrile requires strict raw material preparation, scientific reaction process and fine post-treatment, and at the same time, it needs to pay attention to safe production and environmental protection requirements. Only in this way can we manufacture high-quality methacrylonitrile products and contribute to the development of chemical production field.
