The Application of Heat Pipe to Flue Gas Residual Heat System in Thermal Organic Media Furnace with Coal as Fuel

To resolve the problem of reclaiming residual heat of the flue gas for thermal organic media furnace with coal as fuel, a technique project of reclaiming residual heat of the flue gas using heat pipe technology is put forward, and the technology of heat exchanger network is optimized. 1.25MPa steam produced by the heat pipe steam generator reclaiming residual heat of the flue gas can supply supplement steam of the rapid installation steam boiler, and the boiler operation time can be reduced and the energy can be saved. The heat pipe air pre-heater further recycles residual heat of the flue gas, preheating up the air from the normal temperature to 130°C or so, as heating furnace´s oxidizing air. And the efficiency of heating furnace can be improved. The project application example indicated that the economic benefit of the system of reclaiming residual heat of the flue gas using heat pipe technology is the more remarkable than that of the traditional tube-shell air pre-heater.