Manufacturing method of cyclohexanone oxime
I. INTRODUCTION
Cyclohexanone oxime is an important raw material for the production of chemicals, which is widely used in the fields of pharmaceuticals, pesticides, dyes and so on. Therefore, it is of great significance to study the manufacturing method of cyclohexanone oxime to improve the production efficiency, reduce the cost and improve the product quality. In this paper, we will introduce a manufacturing method of cyclohexanone oxime, including raw material preparation, reaction process, and post-treatment.
II. Raw material preparation
The main raw materials for manufacturing cyclohexanone oxime are cyclohexanone and hydroxylamine salt. Among them, cyclohexanone can be obtained by hydrogenation of petrochemical raw material benzene, and hydroxylamine salt can be obtained by reacting hydroxylamine with acid. In the process of raw material preparation, the purity and quality of raw materials need to be ensured to avoid adverse effects on the subsequent reaction.
III. Reaction process
The manufacturing process of cyclohexanone oxime mainly includes the following steps:
1. Cyclohexanone and hydroxylamine salt are added into the reactor according to a certain molar ratio, and an appropriate amount of solvent is added at the same time to improve the reaction efficiency.
2. Stirring the reaction under a certain temperature and pressure. The reaction temperature and time need to be controlled during the reaction to ensure the progress of the reaction and the quality of the product.
3. At the end of the reaction, cooling, filtration and washing were carried out to obtain the crude product of cyclohexanone oxime.
4. Post-treatment
The post-treatment process mainly includes the following steps:
1. The crude cyclohexanone oxime product is refined to remove the impurities and improve the purity of the product. Commonly used refining methods include recrystallization, distillation and so on.
2. Perform product analysis and quality testing on the refined cyclohexanone oxime to ensure the quality of the product and compliance with relevant standards.
V. Precautions
In the manufacturing process of cyclohexanone oxime, the following matters need to be paid attention to:
1. Control the reaction temperature and pressure to avoid side reactions or product quality problems during the reaction.
2. Choose suitable solvent and reaction conditions to improve reaction efficiency and product quality.
3. In the post-treatment process, the purity and quality of the product need to be ensured to avoid adverse effects on subsequent applications.
VI.CONCLUSION
In this paper, a manufacturing method of cyclohexanone oxime was introduced, including raw material preparation, reaction process and post-treatment. In the actual production process, the manufacturing method needs to be optimized and improved according to the specific situation in order to improve the production efficiency, reduce the cost and improve the product quality. At the same time, attention needs to be paid to safe production and environmental protection requirements to ensure the sustainability and stability of the production process.
