Precautions for the safe operation of CO2 compressors

1. Constantly monitor whether various process parameters such as the compressor’s pressure and temperature meet the required standards. If any exceedance occurs, the cause should be identified promptly and addressed immediately. 2. Regularly check the lubrication system to ensure it remains unobstructed and in good condition. The grade of the lubricating oil used must meet the design requirements. A three-stage filtration system must be strictly implemented for lubricating oil to fully ensure its quality. Lubricating oils that are to be reused must be regularly analyzed and tested, and new oil must be added periodically or the oil must be completely replaced and regenerated, so as to keep various parameters such as the flash point, viscosity, moisture, impurities, and ash content within the specified ranges. When a circulating oil pump is used for supplying oil, attention should be paid to the oil pressure and level in the tank; when an oil injection pump is used for automatic oil supply, attention should be paid to the amount of oil injected at each injection point. 3. Heat is generated during the compression of gas; this heat is removed by the cooling water in the cooler and the cylinder jacket. It is necessary to ensure that the water in the cooler and water jacket flows smoothly, with no blockages. The cooler and water jacket must be cleaned regularly, and the temperature of the cooling water should not exceed 40°C. If the cooling water supply is suddenly interrupted while the compressor is running, the cooling water inlet valve should be closed immediately, after which the machine should be shut down to allow it to cool down naturally. This is to prevent the equipment from overheating and then being cooled suddenly by the cooling water, which could cause it to explode. 4. The temperatures at the inlet and outlet of each stage of the compressor should be monitored at all times. If the temperature of a certain section of the compressor rises, it may be caused by an excessive compression ratio, faulty valves, damaged piston rings, worn piston skirts, or poor cooling or lubrication. The cause should be investigated immediately ； Take corresponding action. If the cause cannot be determined immediately, the machine should be shut down for a thorough inspection. 5. The oil and water separated by the separator, cooler, and buffer should be drained at regular intervals (every 30 minutes). If too much oil and water accumulate, it will carry the person to the next cylinder. A small amount can contaminate the cylinder and disrupt lubrication, accelerating the wear of the piston crown, piston rings, and cylinder; a large amount can cause liquid slugging, damaging the equipment. 6. Regular attention should be paid to the operating condition of all moving parts of the compressor. If there are abnormal noises, localized overheating, unusual odors, etc., the cause should be identified immediately and appropriate action taken. If the cause cannot be accurately determined, the machine should be stopped immediately. The cause must be identified and resolved before driving. 7. When the compressor is running, if there are leaks in areas such as the cylinder head, valve cover, pipe connection flanges, and valve flanges, it is necessary to shut down the machine, release the pressure, and then carry out repairs. It is strictly prohibited to loosen bolts while under pressure, to prevent the bolts from breaking due to uneven stress and excessive load. 8. In cold seasons, after the compressor is shut down, the water in the cylinder water jackets and coolers must be drained or forced to circulate within the system, to prevent the cylinders, equipment, and pipelines from freezing and cracking. 9. The compressor must be rotated manually before starting up. Before starting a compressor that compresses flammable gases, it must be purged, and operation can only commence after the analysis shows satisfactory results.