Research on a Novel Heat Recovery Method for Flue Gas

The energy consumption is increasing year after year with the development of economy in our country.Improving and optimizing the way of energy use constantly is necessary.Industrial waste heat is the energy which is not used in the thermal conversion equipment and energy-using equipment in the process of production.In the research, a novel system is developed for waste heat recovery.Parts of sensible heat and latent heat of the low temperature flue gas are recycled through the recuperative heat exchanger which reduces the temperature of the exhausted flue gas.Comparing with the common boiler and the depth recovery system of flue gas waste heat under different conditions, it was found that the latter not only increases the available heat and thermal efficiency, but also reduces the exhausting temperature of flue gas.