German
French
Italian
Portuguese
Japanese
Korrean
Russian
What are the specific contents of the daily maintenance of the activated carbon adsorption cabinet?
What are the specific contents of the daily maintenance of the activated carbon adsorption cabinet?The daily maintenance of the activated carbon adsorption cabinet should be combined with the equipment operating status, application scenario, and component characteristics. The following are the specific maintenance contents and operation points of the parts and scenarios:First, core component maintenance 1. Activated carbon filter Check content: Adsorption efficiency: Use a portable VOC detector to detect the concentration of the outlet, and replace it if it exceeds 20% of the design value or the initial efficiency drops below 80%. Appearance status: Observe whether there is hardening, discoloration, or odor, hardening will lead to increased resistance, and discoloration may indicate chemisorption saturation. Dust accumulation: Use the compressed air gun to purge the surface dust, if the internal dust accumulation is serious, the whole need to be replaced. Replacement standard: Industrial high pollution scenario: every 100,000 ~ 150,000 m³ waste gas replacement, or according to the manufacturer's recommended time cycle. Family scene: at least once a year, when the pollution is serious (such as after renovation) replacement in advance. 2. Fan system Cleaning operation: Clean the surface of the impeller with a soft brush every month to avoid noise increase caused by an imbalance of dynamic balance. Clean the fan shell and air inlet filter with a vacuum cleaner every quarter. Lubrication and calibration: The use of high-temperature lithium grease lubrication bearings, each filling amount of about 1/3 of the bearing chamber volume, to avoid excessive heat. Calibrate the dynamic balance of the fan impeller every year, and professional maintenance is required if the deviation exceeds 5g. 3. Sealing system Inspection method: After closing the cabinet door, use a cigarette or lighter to test whether there is air leakage in the door seam and whether the flame deviation needs to be adjusted. Use a pressure differential gauge to measure the pressure difference between the inlet and outlet of the cabinet. If the pressure difference drops by more than 5%, the sealing performance will decrease. Replacement standard: Replace the sealing strip (EPDM rubber material) every six months, and replace it immediately when aging and cracking. 4. Circuit and control system Insulation testing: Use a megohm meter to measure the insulation resistance of the circuit every year. The resistance value should be ≥2MΩ. If the resistance value is lower than the standard, check whether the circuit is aging or damp. Sensor calibration: Monthly check whether the differential pressure sensor and temperature and humidity sensor are abnormal. If the error exceeds ±5%, calibrate the data. 2. Supplementary maintenance by scenario 1. Industrial waste gas treatment scenario Pretreatment system: Clean the pre-filter (such as a plate or bag filter) weekly to prevent large particles of dust from entering the activated carbon layer. Check the oil removal efficiency of the spray tower or dry filter monthly, as oil will cause activated carbon to fail. Emergency measures: Configure the temperature sensor to start the cooling system (such as nitrogen purge) when the adsorption layer temperature exceeds 60 ° C. 2. Commercial/public environment Air quality linkage: In conjunction with the indoor air quality monitoring system, maintenance alerts are triggered when TVOC concentrations consistently exceed 0.6mg/m³. Disinfection treatment: Use ultraviolet lamps to disinfect the interior of the cabinet every quarter to avoid secondary pollution caused by microbial breeding. 3. Home/small office scenario Simple test: Use formaldehyde self-test box or odor judgment method, if the absorption of odor decreases significantly (such as can not absorb cigarette smell) need to replace the filter element. Energy saving mode: Low pollution periods (such as night) switch to low-speed operation, extending the life of the fan. 3. Special maintenance operations Activated carbon regeneration: In industrial scenarios, thermal desorption regeneration can be used (professional equipment is required, the temperature is controlled at 120~150 ° C), and the number of regenerations does not exceed 3 times. Home scenes are not recommended to regenerate themselves, high temperatures may release harmful gases. Anti-corrosion treatment: In coastal or high-humidity areas, the cabinet surface is sprayed with anti-corrosion paint (such as epoxy resin) every quarter, focusing on the protection of welds and supports. Seismic reinforcement: In an industrial environment with large vibration, check the fastness of anchor bolts every six months and install rubber shock-absorbing pads. 4. Maintenance precautions Safety protection: Wear an N95 mask and goggles when changing activated carbon to avoid dust inhalation; Wear anti-chemical gloves when touching chemical adsorbents (such as acid gas filters). Record and trace: Establish maintenance logs to record the amount of activated carbon replacement, fan running time, fault code, etc., to facilitate predictive maintenance. Compliance check: Industrial users should regularly check whether the exhaust gas emissions meet the standards of the "Air Pollution Prevention and Control Law", and immediately shut down maintenance when exceeding the standard. The above maintenance content, can ensure the long-term stable operation of the activated carbon adsorption cabinet, extend the life of the equipment by more than 30%, and reduce the risk of sudden failure. It is suggested to combine the Internet of Things monitoring system to realize intelligent maintenance and reduce the cost of manual inspection. |
