Tube rupture in furnace
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Cause analysis and preventive measures for tube rupture in heating furnaces? Is it an issue with the operation during runtime? It’s still a quality issue with the furnace tubes
The reason for localized overheating is local coking of the furnace tubes.
Both operational factors and the quality of the furnace tubes can lead to tube failure, but operational factors are the primary cause. Abnormal combustion of the flame, as well as phenomena such as the flame licking the furnace tubes, can result in localized overheating and coking of the tubes, reducing their thermal conductivity. This leads to the formation of hot spots and bulges in the tubes, eventually causing them to burst. It is also possible that a low flow rate of the medium inside the tubes, combined with high temperatures, can cause cracking and coking, thereby leading to tube failure.
It is also related to off-stream flow in the furnace tubes; low flow or no flow can lead to heating, coking, and tube explosion