Reasons for the rupture of heat pipes in air preheaters of petrochemical heating furnaces
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The image below shows a tube rupture in the air preheater of a petrochemical heating furnace. The main reason is that after the compressor stops due to a fault, the air at the cold end stops first, followed by the flue gas. This causes the temperature of the medium inside the heat pipe (water quality) to rise sharply to over 300 degrees, and the pressure to reach more than ten megapascals, resulting in the heat pipe bursting.
The main reason for heat pipe rupture is that after the compressor fails and shuts down, the air at the cold end is stopped first, followed by the flue gas. This caused the temperature of the medium (water) inside the heat pipe to rise sharply to over 300 degrees, and the pressure also increased to more than ten megapascals, ultimately leading to the rupture of the heat pipe. .