On the maintenance of gas blowers in coking plants

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During normal operation, the accumulation of tar and naphthalene in coke oven gas can cause problems with the operation of the blower. Here, I would like to share some of my experiences in blower maintenance: 1. Regularly purge the gas inlet and outlet pipes of the blower as well as the blower rotor, twice per shift for about 10 minutes each time. During the purging process, ensure that the steam pressure remains above 0.4 MPa, and closely monitor parameters such as the vibration of the blower bearings and the temperature of the incoming gas to prevent any significant fluctuations. If any abnormalities occur, stop the purging process immediately； 2. Regularly check the anchor bolts of the blower unit, motor, coupling, and accelerator; tighten them immediately if any looseness is detected ； 3. Ensure that the gas outlet temperature of the primary cooler is between 20-22 degrees, thereby improving the efficiency of coking and naphthalene removal ； 4. Operate the electrostatic tar catcher properly, with the secondary current ranging between 500-800 mA ； 5. Regularly check the quality of the lubricant used in the blower; it is advisable to conduct an oil quality analysis once a month, and replace the lubricant promptly whenever any issues are detected ； 6. All instruments on the blower must remain in good working condition at all times; any faults detected must be addressed immediately ； 7. Pay attention to changes in the amount of oil cooling water and water temperature; the temperature of all bearings of the blower should be below 65 degrees