Step 1: Depressurize and Shut Down the System
To ensure operator safety, before replacing the activated carbon, we need to reduce the pressure of the air purification system to zero. This is to prevent accidents caused by pressure release during the replacement process.
Step 2: Open the System Flange Cover
The flange cover must only be removed after the system pressure has been reduced to zero. A container should be prepared to hold the activated carbon to prevent spillage, waste, and pollution.
Step 3: Remove the Old Activated Carbon
Use an industrial vacuum cleaner or other tools to completely remove the activated carbon from the container. Collect the removed activated carbon in one place to prevent contamination of the workshop floor. Observe the surface of the activated carbon for oil stains. If oil stains are found, the filter element and air compressor need to be maintained and serviced promptly.
Step 4: Clean the Inside of the System
Thorough cleaning and inspection ensure that there are no residual contaminants inside the system, preventing them from affecting the adsorption effect of the new activated carbon.
Gently tap the oil separator with a hammer to dislodge any activated carbon adhering to the inner wall. Wipe the inner wall of the oil separator clean with a clean cloth, wash with soapy water if necessary, and then dry with compressed air.
Check the ventilation head: Ensure that the upper and lower ventilation heads are intact. If the wire mesh is damaged or rusted, thoroughly remove the rust and replace it with a 50-mesh wire mesh.
Step 5: Reinstall the Lower Flange Cover
After cleaning, the lower flange cover needs to be reinstalled. This ensures the sealing of the flange connection to prevent air leaks that could reduce system operating efficiency.
Step 6: Fill with New Activated Carbon
According to the estimated filling amount, gradually pour in the new activated carbon. Gently tap the legs or other parts of the oil separator to compact the activated carbon and prevent pulverization. A fan can be used to blow away any dust generated during the filling process, ensuring that the activated carbon is tightly packed. During the filling process, ensure the uniformity and density of the activated carbon to achieve its best adsorption effect.
Step 7: Cover the Flange Cover and Perform a Leak Test
The leak test is a crucial step to ensure that the system is airtight, directly affecting the system's operating efficiency and safety. After filling, the flange cover needs to be reinstalled and a leak test performed. Step 8: Dust Removal and Site Cleanup
After all replacement work is completed, perform final dust removal and cleanup. This not only ensures the cleanliness of the system but also reduces environmental pollution and improves work efficiency.