Talk about the air leakage rate of the air preheater in your plant
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This post was last edited by zgj2405 on 2011-9-5 at 18:09. Topic: Discuss the air leakage rate of the air preheater in one’s own plant. Boiler type and model: Air preheater type: Air preheater sealing type: Current air leakage rate of the air preheater: Main factors affecting the current air leakage rate of the air preheater: Measures taken to reduce the air leakage rate of the air preheater and their effectiveness: Measures planned to take to reduce the air leakage rate of the air preheater:
This post was last edited by dongjiang1001 on 2011-9-5 15:48. Boiler type and model: DG75/5.3； Air preheater type: thin-walled welded tube, 4 tube boxes ； Air preheater sealing type: Welded ； Current air leakage rate of the air preheater: It has not been measured; damaged tubes are found during each maintenance check ； The main factors affecting the air leakage rate of air preheaters at present are: defects in the tubes themselves (cracks at the welds of welded tubes), wear, and damage caused by vibration ； Measures taken to reduce the air leakage rate of the air preheater and their effects: shock absorption reinforcement, replacement of leaking pipes ； Measures planned to reduce the air leakage rate of the air preheater: gradually replacing it with seamless tubes, and installing anti-wear devices on the two rows of tubes facing the airflow.
Last edited by zgj2405 on 2011-9-5 17:53: Boiler type and model: 75T/H circulating fluidized bed boiler； Air preheater type: Horizontal tube bank (tilted installation) ； Air preheater sealing type: Welded ； Current air leakage rate of the air preheater: 3 sets × 1,118 tubes (41 tubes have been plugged) ； The main factor affecting the air leakage rate of air preheaters at present: dust wear ； Measures taken to reduce the air leakage rate of the air preheater and their effects: Plugging the tubes (sealing both ends of the tubes with leaks) ； Measures planned to reduce the air leakage rate of the air preheater: modifying the cyclone separator.