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[Chemical Knowledge]：Manufacturing method and process flow of industrial liquid chlorine

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The manufacturing method
of industrial liquid chlorine
1. Introduction

liquid chlorine is an important raw material for the production of chemical products, widely used in water treatment, papermaking, medicine, pesticides, printing and dyeing and other fields. With the development of industry, the demand for liquid chlorine is also increasing. Therefore, it is of great significance to study the manufacturing method of industrial liquid chlorine for improving the yield and quality of liquid chlorine and promoting the development of chemical industry.

2. industrial liquid chlorine manufacturing method

industrial liquid chlorine manufacturing method mainly has two kinds of electrolysis and pyrolysis.

1. Electrolysis

electrolysis is a process in which sodium hydroxide, hydrogen and chlorine are generated by electrifying the salt solution. After chlorine and hydrogen are mixed, liquid chlorine is made through processes such as cooling, drying and compression. Electrolysis is one of the commonly used methods for manufacturing liquid chlorine in industry. The advantages of

electrolysis are mature process, stable operation, good product quality, and the ability to produce a variety of useful by-products. However, this method has high energy consumption, requires a large amount of electricity and raw materials, and also has high equipment maintenance costs.

2. Pyrolysis

pyrolysis refers to the process of decomposing chlorinated paraffin, vinyl chloride and other organic substances at high temperature to generate chlorine and hydrocarbon gases. Chlorine gas after cooling, drying, compression and other processes, made of liquid chlorine. Pyrolysis is a relatively new method for the manufacture of liquid chlorine. The advantages of

pyrolysis are simple process, low energy consumption, wide sources of raw materials, and the ability to produce a variety of useful by-products. However, the operating conditions of this method are relatively harsh, high temperature and high pressure conditions are required, and the requirements for equipment are relatively high.

3. Industrial Liquid Chlorine Manufacturing Process

Industrial Liquid Chlorine Manufacturing Process mainly includes the following steps:

1. Raw material processing: Pretreatment of raw materials such as salt or chlorinated paraffin to meet the requirements of the production process.

2. electrolysis or pyrolysis: chlorine and hydrogen or hydrocarbon gases are generated by electrolysis or pyrolysis.

3. Cooling and drying: The generated chlorine gas is cooled and dried to remove moisture and impurities therein.

4. Compression and liquefaction: The dry chlorine gas is compressed and liquefied to make liquid chlorine products.

5. Storage and transportation: Store the manufactured liquid chlorine product in a dedicated cylinder and transport it to the user.
Precautions for the manufacture of liquid chlorine for industrial use in
4.

In the manufacturing process of liquid chlorine for industrial use, the following matters need to be paid attention to:

1. Strictly control the quality of raw materials to ensure that the purity and components of raw materials meet the requirements of the production process.

2. Strengthen the safety management in the production process to prevent accidents such as leakage and fire.

3. Regularly inspect and maintain production equipment to ensure the normal operation and service life of the equipment.

4. Pay attention to environmental protection, energy conservation and emission reduction, and reduce waste emissions and energy consumption in the production process.

5. Conclusion The manufacturing methods of liquid chlorine for

industry mainly include electrolysis and pyrolysis, and 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 inspect and maintain production equipment, and pay attention to environmental protection and energy conservation and emission reduction. By continuously improving the manufacturing process and technical level, we can further improve the output and quality of liquid chlorine and contribute to the development of the chemical industry.

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