Manufacturing Method of Vinyl Chloride
I. Introduction
Vinyl chloride is an important organic chemical raw material, which is widely used in the production of plastics, rubbers, fibers and other polymer materials. With the continuous development of the chemical industry, the manufacturing methods of vinyl chloride have been improved and optimized. In this paper, we will introduce the manufacturing methods of vinyl chloride, including acetylene method, ethylene method and combined method, and analyze their advantages and disadvantages and scope of application.
II. Acetylene method
Acetylene method is one of the common methods for manufacturing vinyl chloride, and its main raw materials are acetylene and hydrogen chloride. The main raw materials are acetylene and hydrogen chloride. Under the action of catalyst, acetylene and hydrogen chloride undergo addition reaction to generate vinyl chloride. Acetylene method has the advantages of simple process, convenient operation and low cost, so it is still widely used in some small chemical enterprises. However, the disadvantage of acetylene method is that the production process will produce a large amount of wastewater and exhaust gas, greater environmental pollution.
Three, ethylene method
Ethylene method is a more advanced method of manufacturing vinyl chloride, its main raw materials are ethylene and hydrogen chloride. The main raw materials are ethylene and hydrogen chloride. Under the action of catalyst, ethylene and hydrogen chloride undergo addition reaction to produce vinyl chloride. The advantage of the ethylene method is that it can produce vinyl chloride with high purity, and at the same time, it produces less exhaust gas and wastewater and causes less pollution to the environment. However, the disadvantage of the ethylene method is that it requires the use of high-quality raw materials, and the cost is higher.
Fourth, the combined method
The combined method is a method that combines the acetylene method and the ethylene method, aiming to give full play to the advantages of the two methods and make up for their shortcomings. The main raw materials of the combined method are acetylene, ethylene and hydrogen chloride. By adjusting the ratio of raw materials and process parameters, it can realize the production of vinyl chloride with high yield and high purity, and at the same time reduce the pollution to the environment.
V. Manufacturing process
Whichever method is used to manufacture vinyl chloride, the manufacturing process includes the steps of raw material preparation, reaction, separation and refining. Among them, reaction is the key step in the manufacture of vinyl chloride, which requires the selection of suitable catalyst and reaction conditions to ensure the smooth progress of the reaction and the purity of the product. The separation and refining steps, on the other hand, are needed to separate and purify the reaction products in order to ensure the quality and purity of the products.
VI.Safety Measures
Since vinyl chloride is a toxic and hazardous chemical raw material, it is necessary to strictly follow the safety operation procedures during the manufacturing process to ensure the safety of employees and the environment. At the same time, it is necessary to carry out comprehensive monitoring of the production process to discover and solve potential safety hazards in time to ensure the stability and safety of production.
VII. Environmental Protection Measures
Since the vinyl chloride manufacturing process will produce certain waste gas and waste water, it is necessary to take corresponding environmental protection measures for treatment. For example, methods such as waste gas combustion and waste water treatment can be adopted to reduce the pollution to the environment. At the same time, it is also necessary to strengthen the monitoring and management of wastewater and waste gas to ensure that the discharge is up to standard.
VIII.CONCLUSION
There are various manufacturing methods for vinyl chloride, including acetylene method, ethylene method and combined method. Different methods have different advantages and disadvantages and scope of application, and need to be selected according to the actual situation. In the manufacturing process, it is necessary to strictly comply with the safety operation regulations and environmental protection requirements to ensure product quality and production safety. At the same time, it is also necessary to continuously explore new manufacturing methods and technologies to improve the production efficiency and quality of vinyl chloride and promote the sustainable development of the chemical industry.
