The operation and maintenance of air separation equipment mainly include the following aspects:
Operation points
Startup and shutdown process: At startup, start auxiliary equipment such as air filters, precooling systems, etc., then gradually start the compressor and refrigeration system, and finally start the distillation tower. The order is reversed during shutdown, and attention should be paid to proper venting and decompression of the equipment during shutdown to prevent equipment damage.
Operation parameter control: Through the automatic control system, the inlet and outlet pressure and temperature of the compressor, the refrigeration temperature of the refrigeration system, the liquid level and pressure of the distillation tower and other parameters are monitored in real time, and adjusted according to the set value to ensure stable operation of the equipment.
Maintenance points
Regular inspection and maintenance: The air filter should be replaced regularly, generally every 36 months. The compressor should regularly check the quality and quantity of lubricating oil, check it once every 12 months, and check and maintain the moving parts of the compressor such as the impeller and piston to prevent wear and failure.
Refrigeration system and distillation tower maintenance: The key equipment such as the expander of the refrigeration system should be regularly inspected, and the sealing performance and bearing wear should be checked. A comprehensive inspection should be carried out at least once a year. The distillation tower should be cleaned regularly to prevent blockage. Generally, the internal cleaning should be carried out every 2-3 years. At the same time, the insulation of the tower body should be checked to ensure good insulation effect.
Cleaning and inspection: Clean the equipment regularly, use professional cleaning agents and tools to avoid damage to the equipment. Inspection is an important means to discover potential problems of the equipment. By inspecting the appearance, sound, vibration and other aspects of the equipment, abnormal conditions can be discovered in time and corresponding measures can be taken to deal with them.
Lubrication: Good lubrication can reduce friction and wear inside the equipment and extend the service life of the equipment. The appropriate lubricating oil or grease should be selected according to the use of the equipment and the manufacturer's recommendations, and added or replaced at the prescribed time intervals.
Common problems and solutions Temperature control: The operation process of the air separation equipment requires precise control of temperature and pressure to ensure the separation efficiency of the distillation tower. If abnormal temperature or pressure fluctuations are found, measures should be taken immediately to adjust them.
Gas purity: The operating status of the distillation tower needs to observe the gas purity at any time to prevent the product quality from deteriorating due to malfunctions. Regularly clean the frost or ice in the cold box to maintain the thermal insulation effect of the equipment.
Sealing performance: Regularly check the sealing performance of the equipment to prevent leakage and impurities from entering the equipment, affecting the heat dissipation effect and operating efficiency of the equipment.
Through the above operation and maintenance points, the long-term stable operation of the air separation equipment can be effectively ensured, and the production efficiency and safety can be improved.