DONG Zhi-qian, ZHENG Tian-yang, CHENG Zhong-hui, et al. CHARACTERISTIC ANALYSIS OF TUBE-BURST OCCURRED ON HEATING SURFACE OF THE WATER-WALL IN 300 MW CFB BOILER[J]. Thermal power generation, 2007, (7): 89-90.
DONG Zhi-qian, ZHENG Tian-yang, CHENG Zhong-hui, et al. CHARACTERISTIC ANALYSIS OF TUBE-BURST OCCURRED ON HEATING SURFACE OF THE WATER-WALL IN 300 MW CFB BOILER[J]. Thermal power generation, 2007, (7): 89-90. DOI: 10.19666/j.rlfd.2007.07.026.
The situation of tube-burst occurred on the water-wall of 300 MW circulating fluidized bed(CFB) boilers has been presented.It is believed from analysis that the main causes are as follows:(1) untightness of the hand-operated valve for purging the tapered valve of slag-cooler at the right side of boiler no.1 by using compressed air;(2) unwelded fins of extended wall on the water-wall of boiler no.2;(3)the temporary weldments haven't removed;(4) long term scouring by hot air and other materials.For these
corresponding treatment and preventive measures have been put forward.