Practical Exercise on Purification Technology Version [005]
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This post was last edited by hai8487 on 2017-7-16 07:27. How to put the low-temperature methanol pump into standby after maintenance: 1. Ensure that all drain valves are closed. 2. Slowly open the inlet valve to fill the pump; open the exhaust valve to release air and then close it. 3. Open the cold shock valve at the pump’s outlet. 4. Rotate the pump shaft to check that there is no jamming. 5. Confirm that the auxiliary systems are functioning properly. 6. Contact the electrical department to supply power, preparing to test the pump. “My Technical Upgrades” in the coal chemical industry in 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 all drain valves are closed. 2. Slowly open the inlet valve to fill the pump; open the exhaust valve to release air and then close it. 3. Open the pump’s outlet cooling valve. 4. Rotate the pump shaft to ensure there is no sticking. 5. Confirm that the auxiliary systems are functioning properly. 6. Contact the electrical department to supply power, preparing to test the pump
1. Confirm that all drain and bleed valves are closed. 2. Slowly open the inlet valve to fill the pump; open the exhaust valve to release air and then close it. 3. Open the cold shock valve at the pump outlet. 4. Rotate the pump shaft to ensure there is no jamming. 5. Confirm that the auxiliary systems are operating properly. 6. Contact the electrical department to supply power, preparing to test the pump
1. Confirm that all drain drains are closed； 2. Slowly open the inlet valve to fill the pump; open the vent valve to release air and then close it ； 3. Pump outlet chill valve ； 4. The turning gear operates without any jamming ； 5. Confirm that the auxiliary systems are operating normally ； 6. Contact the electrical department to supply power and prepare to test the pump.
First, purge with nitrogen; once it is satisfactory, close the backflow valve, open the inlet valve and the reflux valve, and open the exhaust valve to release gas. Close the exhaust valve when the multi-dispenser pump is discharging liquid. Open the cold shock valve on the pump. Open the circulating water return valve. Power supply backup
1. Confirm that all drain and bleed valves are closed. 2. Slowly open the inlet valve to fill the pump; open the exhaust valve to release air and then close it. 3. Open the cold shock valve at the pump outlet. 4. Rotate the pump shaft to ensure there is no jamming. 5. Confirm that the auxiliary systems are operating properly. 6. Contact the electrical department to supply power, preparing to test the pump
1. The inlet valve is fully open. 2. The cooling water flow is unobstructed. 3. The lubricating oil is normal. 4. Check valve bypass is open. 5. If the pump starts automatically and the outlet valve is open, set to “AUTO”. 6. Regular turning of the shaft
1. Confirm that all drain traps are closed. 2. Slowly open the inlet valve to fill the pump; open the exhaust valve to release air and then close it. 3. Open the cold shock valve at the pump outlet. 4. Rotate the pump shaft to ensure there is no sticking
1. Confirm that all drain and bleed valves are closed. 2. Slowly open the inlet valve to fill the pump; open the exhaust valve to release air and then close it. 3. Open the cold shock valve at the pump outlet. 4. Rotate the pump shaft to ensure there is no jamming. 5. Verify that the auxiliary systems are functioning properly. 6. Contact the electrical department to supply power, preparing to test the pump
1. Confirm that all drain valves are closed. 2. Slowly open the inlet valve to fill the pump; open the exhaust valve to release air and then close it. 3. Open the cold shock valve at the pump outlet. 4. Rotate the pump shaft to ensure there is no sticking. 5. Confirm that the auxiliary systems are operating properly. 6. Contact the electrical department to supply power, preparing to test the pump
1. Confirm that all drain and bleed valves are closed. 2. Slowly open the inlet valve to fill the pump; open the exhaust valve to release air and then close it. 3. Open the cold shock valve at the pump outlet. 4. Rotate the pump shaft to ensure there is no jamming. 5. Confirm that the auxiliary systems are operating properly. 6. Contact the electrical department to supply power, preparing to test the pump