Manufacturing method of liquid chlorine for industrial use
I. INTRODUCTION
Liquid chlorine is an important raw material for the production of chemicals, which is widely used in many fields, such as water treatment, papermaking, pharmaceuticals, pesticides, printing and dyeing and so on. With the development of industry, the demand for liquid chlorine is increasing. Therefore, it is of great significance to study the manufacturing method of industrial liquid chlorine to improve the output and quality of liquid chlorine and promote the development of chemical industry.
II. Manufacturing methods of industrial liquid chlorine
The manufacturing methods of industrial liquid chlorine are mainly electrolysis and pyrolysis.
1. Electrolysis
Electrolysis is the process of energizing aqueous salt solution to generate sodium hydroxide, hydrogen and chlorine gas through electrolysis. The chlorine gas is mixed with the hydrogen gas and then cooled, dried and compressed to make liquid chlorine. Electrolysis is currently one of the common methods used in industry to manufacture liquid chlorine. The advantages of
electrolysis method are mature process, stable operation, good product quality, and at the same time, it can produce a variety of useful by-products. However, the method has high energy consumption, requires large amounts of electricity and raw materials, and has high equipment maintenance costs.
2. Pyrolysis
Pyrolysis is a process in which organic materials such as chlorinated paraffins and vinyl chloride are decomposed at high temperatures to produce chlorine gas and hydrocarbon gases. The chlorine gas is cooled, dried and compressed to make liquid chlorine. Pyrolysis is a relatively new method of manufacturing liquid chlorine. The advantages of
pyrolysis are simple process, low energy consumption, wide source of raw materials, and the production of many useful by-products. However, the operating conditions of this method are more harsh, requiring high temperature and high pressure conditions, and higher requirements for equipment.
3. Manufacturing process of industrial liquid chlorine
The manufacturing process of industrial liquid chlorine mainly includes the following steps:
1. Raw material treatment: raw materials such as table salt or chlorinated paraffin are pre-treated to meet the requirements of the production process.
2. Electrolysis or pyrolysis: Chlorine and hydrogen or hydrocarbon gases are generated through electrolysis or pyrolysis.
3. Cooling and drying: The generated chlorine gas is cooled and dried to remove moisture and impurities from it.
4. Compression and liquefaction: The dried chlorine gas is compressed and liquefied to make a liquid chlorine product.
5. Storage and transportation: the made liquid chlorine products are stored in special cylinders and transported to the users.
Four, industrial liquid chlorine manufacturing precautions
In the manufacturing process of industrial liquid chlorine, the following matters need to be noted:
1. Strictly control the quality of raw materials to ensure that the purity of raw materials and components in line with the requirements of the production process.
2. Strengthen the safety management in the production process to prevent the occurrence of accidents such as leakage and fire.
3. Regularly check and maintain the production equipment to ensure the normal operation and service life of the equipment.
4. Pay attention to environmental protection and energy saving and emission reduction, and reduce waste emission and energy consumption in the production process.
V. Conclusion
The manufacturing methods of industrial liquid chlorine are mainly electrolysis and pyrolysis, and the different methods have their own advantages and disadvantages. In the manufacturing process, it is necessary to strictly control the quality of raw materials, strengthen safety management, regularly check and maintain the production equipment, and pay attention to environmental protection and energy saving and emission reduction. By continuously improving the manufacturing process and technology level, the output and quality of liquid chlorine can be further improved, contributing to the development of the chemical industry.
