Practical Exercise on Purification Technology Version [004]
Thread Content
Commissioning of the on-site level gauge: 1. Verify that the level gauge is ready for operation. 2. Ensure that the bottom drain valve and the top vent valve of the level gauge are closed. 3. Slightly open the vapor phase root valve. 4. Slightly open the liquid phase root valve. 5. Once the level reaches the normal reading, fully open both the vapor phase and liquid phase root valves. 6. Contact the control room to check; the on-site level should match the level indicated in the control room. “My Technical Upgrades” in the coal chemical industry, 2017: http://bbs.hcbbs.com/thread-1786290-1-1.html. “Creative Ideas for Energy Savings” in the petrochemical sector – Phase 2 of this activity is currently in progress: http://bbs.hcbbs.com/thread-1666758-1-1.html
1. Confirm that the level gauge is ready for use. 2. Ensure that the bottom drain and top vent valve of the level gauge are closed. 3. Slightly open the vapor-phase root valve. 4. Slightly open the liquid-phase root valve. 5. Once the liquid level reaches the normal value, fully open the vapor and liquid-phase valves. 6. Contact the control room to compare the readings
1. Check that the installation is correct and that the level gauge is intact with no damage； 2. If there are multiple valves between the equipment and the level gauge, first open the valves other than those that are part of the level gauge itself or those located closest to the level gauge ； 3. Slowly open the air valve ； 4. Slowly open the liquid valve ； 5. Perform the level gauge flushing operation, and eliminate the possibility of blockages in the pressure transfer tubes during this process.
1. Check that the installation is correct and that the level gauge is intact with no damage； 2. If there are multiple valves between the equipment and the level gauge, first open the valves other than those that are part of the level gauge itself or those located closest to the level gauge ； 3. Slowly open the air valve (upper valve) ； 4. Slowly open the liquid valve (lower valve) ； 5. Perform the level gauge flushing operation, and eliminate the possibility of blockages in the pressure transfer tubes during this process. Note: When opening the valve and performing flushing operations, do so slowly to prevent blockages caused by the operation of the level gauge’s leak prevention device.
During actual operation, it doesn’t matter whether to turn it on from the top or from the bottom; what’s important is to check that there are no leaks. The upper part is the gas phase, while the lower part is the liquid phase. It can only be put into use after any leaks have been fixed. If there is no leakage but the display shows an issue, troubleshooting must be carried out based on the type of level gauge!
1. Confirm that the level gauge is ready for use. 2. Ensure that the bottom drain and top vent valve of the level gauge are closed. 3. Slightly open the vapor-phase root valve. 4. Slightly open the liquid-phase root valve. 5. Once the liquid level display is normal, fully open the valves
When putting the level gauge into use on-site, special attention should be paid to opening the upper gate valve first, and then the lower gate valve.
1. Confirm that the level gauge is ready for use. 2. Ensure that the bottom drain valve and the top vent valve of the level gauge are closed. 3. Slightly open the root valve on the gas phase side. 4. Slightly open the root valve on the liquid phase side. 5. Once the level reaches the normal reading, fully open the root valves for both the gas phase and the liquid phase. 6. Check with the control room to ensure that the on-site level matches the level indicated in the control room
1. Check that the installation is correct and that the level gauge is intact with no damage； 2. If there are multiple valves between the equipment and the level gauge, first open the valves other than those that are part of the level gauge itself or those located closest to the level gauge ； 3. Slowly open the air valve (upper valve) ； 4. Slowly open the liquid valve (lower valve) ； 5. Perform the level gauge flushing operation, and eliminate the possibility of blockages in the pressure transfer tubes during this process. Note: When opening the valve and performing flushing operations, do so slowly to prevent blockages caused by the operation of the level gauge’s leak prevention device.
1. Check that the installation is correct and that the level gauge is intact with no damage； 2. If there are multiple valves between the equipment and the level gauge, first open the valves other than those that are part of the level gauge itself or those located closest to the level gauge ； 3. Slowly open the air valve (upper valve) ； 4. Slowly open the liquid valve (lower valve) ； 5. Perform the level gauge flushing operation, and eliminate the possibility of blockages in the pressure transfer tubes during this process. Note: When opening the valve and performing flushing operations, do so slowly to prevent blockages caused by the operation of the level gauge’s leak prevention device.
1. Confirm that the level gauge is ready for use; 2. Ensure that the bottom drain and top vent valve of the level gauge are closed; 3. Slightly open the vapor phase root valve; 4. Slightly open the liquid phase root valve; 5. Once the level reaches the normal reading, fully open both the vapor phase and liquid phase root valves; 6. Check with the control room to ensure that the on-site level matches the level indicated by the control system.