Analysis and precaution on tube bursting in lowtemperature superheater of boiler

Abstract

Abstract:

There was a tube bursting in the lowtemperature superheater of supercritical unit in a power plant.Through macro inspection, metallographic analysis and electron microscopy, combining previous startup and shutdown inspection status, maintenance status, abnormal operation and the initial design of the boiler, it is discovered that oxidized scale falling off which leads to tube blockage and shortterm overheating is the cause to the tube bursting. Effective preventive measures for operating statuses are proposed, which effectively improve the safety and economy of the units

Key words:

">">low">">temperature superheater； tube bursting； oxidized scale

CHEN Xianxian, FANG Jue.

Analysis and precaution on tube bursting in lowtemperature superheater of boiler

[J]. Huadian Technology, 2018, 40(11): 55-56.

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Analysis and precaution on tube bursting in lowtemperature superheater of boiler

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