Analysis of faults in trial operation of DG490/13.73-Ⅱ2 CFB boiler

Huadian Technology ›› 2010, Vol. 32 ›› Issue (4): 45-47.

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Analysis of faults in trial operation of DG490/13.73-Ⅱ2 CFB boiler

ZHANG Chunli

China Huadian Engineering Corporation Limited, Beijing 100035, China

Received:1900-01-01 Revised:1900-01-01 Online:2010-04-25 Published:2010-04-25

Abstract

Abstract: The faults occurred during installation and commission of DG490/13.73-Ⅱ2 CFB boiler manufactured by Dongfang Boiler Factory were discussed, which include the pulverized coal leakage of coal feeder system, the jam of limestone feeder, the coking of furnace and refeeder, distortion and burning loss of ignition duct expansion joint, air leakage of air heater and others. Some typical accident examples, such as the boiler shutdown due to severe water shortage caused by blocking fault of filter screen of feed pump and secondary consumption in tail duct caused by serious overtemperature in economizer area, were introduced, and the reasons of the accidents were analyzed. The solving method and concrete measures to prevent the accidents were proposed, which can be used as reference for same units in erection and operation.
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Key words: circulating fluidized bed (CFB) boiler, economizer, secondary combustion, accident, measure

ZHANG Chunli. Analysis of faults in trial operation of DG490/13.73-Ⅱ2 CFB boiler[J]. Huadian Technology, 2010, 32(4): 45-47.

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Analysis of faults in trial operation of DG490/13.73-Ⅱ2 CFB boiler

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