Project introduction: Heat pipe is a new and efficient heat transfer element. It can transfer a large amount of heat over long distances through a small cross-sectional area without external power. Due to its many characteristics, it is widely used. Especially in the application of air preheater, it can effectively solve the problem of low-temperature corrosion, ash blocking, wear,

Air leakage and other problems. However, practice has proved that after the heat pipe is used for a period of time, the heat transfer efficiency is reduced, which is mainly caused by the failure of the heat pipe. There are many factors that affect the life of heat pipes, which can be summed up in three main aspects: non-condensable gases are generated; the physical properties of the working liquid are deteriorated, and the organic working medium will gradually decompose at a certain temperature; and dew point corrosion.

Main features: The surface porous layer is sintered in the evaporation section of the heat pipe to enhance the boiling of the working medium, and the surface modification is used to condense strong chemical substances in the condensation section of the heat pipe to greatly improve the heat transfer performance of the heat pipe. Surface modification technology is adopted to suppress the generation of non-condensable gases inside the heat pipe and extend the service life of the heat pipe. Coating corrosion resistant alloy on the outer surface of the heat pipe improves the dew point corrosion resistance of the heat pipe and reduces the exhaust gas temperature of the heating furnace. At the same time, the waste heat recovery system is optimized to optimize the combustion status of the heating furnace air after waste heat.

Technical level: The technology is at the domestic advanced level.

Application prospect: This project is of great significance to the enterprise's energy conservation and consumption reduction and the improvement of petrochemical production technology level.