Nitrogen Generator Carbon Molecular Sieve Replacement

Replacement of Carbon Molecular Sieve in Nitrogen Generator, Refilling of Pulverized Carbon Molecular Sieve in Nitrogen Generator After prolonged use of the nitrogen generator, the quality of the carbon molecular sieve deteriorates, leading to low purity of the produced nitrogen. Replacing the carbon molecular sieve can restore the purity. Many customers have reported that after a certain period of use, nitrogen generators experience issues such as insufficient gas production, decreased nitrogen purity, and powder spraying from the nitrogen generator. Replacement of Carbon Molecular Sieve Improper operation and maintenance during the use of carbon molecular sieve can lead to poisoning. For example, if the initial air purification system is not equipped with treatment equipment or the existing equipment is operating with faults, oil and water impurities may enter the adsorption tower directly with the air and be adsorbed by the carbon molecular sieve, causing poisoning. This severely impairs the desorption capacity, significantly reducing nitrogen production and purity. Additionally, after reaching a certain service life, the nitrogen purity of the carbon molecular sieve will noticeably decline, failing to meet usage requirements. In such cases, replacing the carbon molecular sieve must be considered. PSA nitrogen generation has been widely used in China for over twenty years, and many users have reported similar issues. In response to the demands of nitrogen generator users, our company has successfully provided carbon molecular sieve replacement services for dozens of nitrogen generators from brands such as Sujing, Hangyang, Tianyi, Feida, Shenlan, Changjiang, and Shengda. Providing thorough, effective, and satisfactory services has always been our consistent service philosophy. Our professional technical service personnel can provide the following services: 1. Technical diagnosis and analysis of faults in PSA nitrogen generators. 2. Provision of technical solutions. 3. Supply of high-quality carbon molecular sieve. 4. Dispatch of technical personnel at any time for technical collaboration and guidance. The service life of carbon molecular sieve decreases by 5% in production capacity annually (due to aging, which is unavoidable). 5. The manufacturer recommends a service life of 5-6 years for CMS-220 carbon molecular sieve, but our company recommends replacement every 4 years. 6. All components are guaranteed for one year by our company, excluding normal consumables. Pulverized carbon molecular sieve is guaranteed for 4 years, excluding normal aging and capacity reduction. 7. Within the one-year warranty period, the carbon molecular sieve will not spray out, excluding improper use (e.g., failure to follow our company's maintenance schedule). We will provide free nitrogen generator repair services. The compression device of the nitrogen generator should have a compression stroke. During the operation of the nitrogen generator, the molecular sieve may pulverize due to the impact and friction of the airflow. However, the compression device should automatically compress until the molecular sieve deficiency alarm is triggered. If the nitrogen generator's compression device is an old-style screw compression, it is a one-time use. Once part of the molecular sieve pulverizes, it will loosen, and pulverization will worsen. Providing thorough, effective, and satisfactory services has always been our consistent service philosophy. Our professional technical service personnel can provide the following services: 1. Technical diagnosis and analysis of faults in PSA nitrogen generators. 2. Provision of technical solutions. 3. Supply of high-quality carbon molecular sieve. 4. Dispatch of technical personnel at any time for technical collaboration and guidance. Detailed Description: 2.2 Equipment Maintenance Requirements 2.2.1 Carbon molecular sieve is the core of nitrogen generation equipment. To prevent contamination and failure, the oil content in the compressor exhaust must be strictly controlled, and the filter elements and activated carbon in the oil remover must be replaced regularly. 2.2.2 Regularly check the pressure gauge of the compression cylinder. If there is no pressure or the pressure drops during the desorption process, it indicates that the cylinder cannot compress the carbon molecular sieve properly. Troubleshoot promptly to prevent the carbon molecular sieve from loosening and pulverizing due to lack of compression. When molecular sieve gap reorganization or normal loss triggers a carbon level alarm, promptly shut down and add carbon molecular sieve. 2.2.3 During operation, if a large amount of black dust is observed spraying from the vent, shut down immediately to identify the cause and avoid加剧 pulverization of the carbon molecular sieve. 2.2.4 The storage, transportation, and handling of carbon molecular sieve are harmless to the human body. When filling carbon molecular sieve, wear protective goggles, a respiratory filter, and use an exhaust fan. After filling, wash the contacted areas with soap. 2.2.5 When faults such as nitrogen purity alarm, carbon level alarm, or adsorption pressure drop occur, promptly identify the cause and resolve the issue. 2.2.6 During continuous operation of the equipment, regularly check the air tightness of all pipeline connections to ensure there are no leaks. Regularly check the operating status of pneumatic valves to ensure they are normal. 2.2.7 If the equipment is idle or used intermittently for a long time, ensure it is started once a month for four hours each time to keep the equipment in standby condition. 2.3 Daily Equipment Maintenance Checklist For the following items, under normal circumstances, check at least once a day according to the requirements in the table below. Record the inspection results and actions taken. Serial No. Item Inspection Content Maintenance Period 1 Valve Switch Status Whether the valve switch status is correct During equipment startup and shutdown 2 Compression Cylinder Compression Status Whether the compression cylinder pressure is normal During equipment startup and shutdown 3 Exhaust Status Whether dust is discharged During equipment operation 4 Buffer Tank Drain Valve Drainage Whether drainage is normal Before startup and after shutdown 5 Instrument Readings Whether readings are normal During equipment operation 6 Air Tightness of Pipeline Connections Whether there are leaks During equipment operation 2.4 Equipment Faults and Troubleshooting Methods Serial No. Fault Phenomenon Fault Cause Troubleshooting Method 1 Purity不合格 Long-Time Alarm 1. Excessive gas production; 2. Adsorption pressure drop; 3. Large filter pressure difference; 4. Pneumatic valve not operating or leaking; 5. Nitrogen analyzer malfunction; 6. Molecular sieve failure. 1. Adjust gas production; 2. Check compressor or air source; 3. Replace filter element; 4. Repair corresponding solenoid valve and pneumatic valve; 5. Follow the manual; 6. Replace molecular sieve. 2 Carbon Level Alarm 1. PLC program disorder; 2. Compression cylinder alarm device malfunction; 3. Normal settling of carbon molecular sieve. 1. Repair PLC; 2. Repair alarm device; 3. Add carbon molecular sieve. 3 Muffler Spraying Dust 1. Carbon molecular sieve not compressed; 2. Damage to the lower棕垫 of the adsorption tower; 3. Damage to the wire mesh of the gas extractor in the middle of the adsorption tower. 1. Check cylinder and upper orifice plate of adsorption tower; 2. Replace lower棕垫 of adsorption tower; 3. Replace wire mesh. 4 Buffer Tank Drain Valve Discharging Carbon Molecular Sieve Particles Upper seal failure of adsorption tower Shut down and check the upper seal of the adsorption tower Note: For faults 3 and 4, shut down immediately and contact us. 2.5 Reference Service Life of Wear Parts and Consumables Serial No. Wear Parts and Consumables Reference Service Life Remarks 1. Carbon Molecular Sieve Over 4 years with normal operation and maintenance No need to add or replace if technical indicators do not significantly decline. 2. Pneumatic Valve 1.5 million cycles No need to replace if operating normally and without leaks. 3. Solenoid Valve Over 1.5 million cycles No need to replace if operating normally. 4. Dust Filter 12 months Or replace the filter element if the pressure difference gauge reads above 0.035 MPa. 5. Air Filter Element 6 months Must be replaced 6. Nitrogen Analyzer 2 years Must be replaced Our company strictly adheres to daily management and product quality management, continuously researches and develops, improves technical services, and refines itself during development while learning to address its shortcomings. We are committed to providing customers with high-quality products, comprehensive technical support, and excellent after-sales service, striving to offer a complete set of优质 products. Seeking development through quality, building brands with integrity, improving ourselves, and serving customers. We look forward to working with you to create a better future! Professional guidance on nitrogen generator maintenance steps. We only charge for high-quality carbon molecular sieve, essential pneumatic valves for nitrogen generator maintenance, activated carbon filters, and other spare parts. Guidance fees for nitrogen generator maintenance are free. After nitrogen generator repair, daily operation and maintenance training for the nitrogen generator is also provided free of charge.