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The chlor-alkali industry is a high-risk industry with high temperature, high pressure, flammable and explosive conditions. Over the years, a group of chlor-alkali enterprises represented by Zhejiang Juhua Co., Ltd. has accumulated rich experience and lessons in equipment management and technological innovation. As the head unit of the national chlor-alkali industry equipment management technology cooperation group, Juhua Electrochemical Factory made a comprehensive summary of these experiences and lessons. According to Fu Jianlin, director of the plant's equipment, overall, there are five key points in the management and technical innovation of chlor-alkali equipment.
First, we must pay attention to the automation of old devices and old equipment. Traditional diaphragm caustic soda system technology is relatively backward, the degree of automation is low, and the probability of accidents is large. Adopt advanced control technology to renovate old equipment and old equipment. For example, the turbine chlorine press adopts reliable control valves and controllers. The hydrogen chloride synthesis furnace adopts DCS control, and the pressure interlock device and flame interlock device are added. The furnace ignition adopts PLC. The control and the like can greatly improve the safety and reliability of the old devices and the old devices.
The second is to grasp the management of heat exchangers in special working conditions. Some carbon steel heat exchangers in caustic soda and polyvinyl chloride plants are special. For example, some carbon steel heat exchangers in the chlorine press will have severe corrosion to the heat exchanger if the tube and shell materials contact each other. The key management of these heat exchangers. If reliable manufacturers and quality products are selected, the process design is optimized, and the equipment structure is improved to ensure that the tube and shell materials are not in contact; at the same time, inspection efforts are increased in operation.
The third is to do a good job of equipment management on key lines. With the expansion of the scale of production, the number of equipment is increasing and the management is becoming more and more difficult. This requires the key management and maintenance of key lines and key equipment, and the key guarantees for spare parts spare parts.
Fourth, we must pay attention to details. The production of chlor-alkali is highly continuous and the process flow is long, which leads to the initiation of the whole body. In the ordinary course of equipment management, special attention must be paid to certain details. In particular, strict rules and regulations should be formulated and corresponding preventive measures should be taken.
The fifth is to pay attention to the upgrading of equipment, especially the technological transformation of old equipment. It is necessary to actively adopt new equipment, new materials, and new technologies to improve the stability of equipment and equipment, and to prolong the maintenance cycle of production equipment. Such as caustic soda devices to achieve two years or even three years of a repair goal.
It is also known that over the years, some enterprises in the chlor-alkali industry have actively promoted modern management technologies such as network planning technology, value engineering technology, and ABC management method, and adopted expanded anodes and modified diaphragm electrolytic cells and high-density bipolar natural circulation ion membrane electrolysis. The new technology and equipment such as tanks, synthetic cooling integrated graphite furnaces, and four-in-one graphite furnaces have greatly improved the technical level of major production facilities, and the reliability and stability of plant operations have also been significantly improved. Greatly extended.
Chlor-alkali industry equipment management and technological innovation to be strengthened
From 2003 to 2006, the chlor-alkali industry ushered in a period of rapid development. In order to seize opportunities, all major production facilities are at full capacity. It is particularly important to ensure the stable and long-term operation of important production facilities. At the same time, due to the country’s increased requirements for safety and environmental protection work, higher requirements have been put on equipment management, which has made equipment management face more new issues. In the fourth all-member meeting of the fourth national chlor-alkali industry equipment management technical cooperation group held in Chengdu in mid-September, the industry generally believed that the chlor-alkali equipment management innovation and technological innovation were two crucial factors that needed to be innovated. At the same time as the management system and model, we will intensify the upgrading of equipment and vigorously promote the application of new equipment, new processes, new materials, and new technologies.
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