Principle of Flue Gas Waste Heat Boiler

Principle of Flue Gas Waste Heat Boiler

Flue gas waste heat boiler as a high energy-saving environmental protection equipment, often used in some power plants, steel mills, large-scale heavy industry, because these industries have a boiler and will produce a large number of high-temperature waste flue gas, these waste flue gas contains a large number of pollutants high temperature, high sulfur, high pollution and can not be directly discharged into the atmosphere, so the need to add a group of environmental protection equipment, the waste flue gas recycling and secondary utilization, reduce gas pollution, to help businesses flue gas to meet the standards.

Flue gas waste heat boiler will be sent to the high temperature flue gas to the preheat recovery device, the high temperature flue gas heat exchanger into a low-temperature flue gas, and then into the flue gas treatment equipment, after treatment through the chimney emissions such as the atmosphere.

Numerous chemical industries in the production process will require fuel, gas, coal-fired process, the incineration process is bound to produce a large amount of heat energy, most of which is also discharged with the flue gas. This heat released through high-temperature incineration of flue gas is flue gas waste heat, flue gas composition is complex to meet the emission standards need to be desulfurization and denitrification treatment, the temperature is too high in the case can not be normal desulfurization and denitrification treatment, which requires flue gas waste heat boiler first to cool down and then deal with it.

The role of flue gas waste heat boiler can generally be divided into two categories, used for waste heat recovery and secondary reuse of heat energy, waste heat recovery is the flue gas and other low-temperature media for heat transfer, heat recovery for secondary reuse, generally as air preheating or hot water recovery. The second use of energy is based on the recovery of the secondary use of waste heat, heated air is used to heat the tropical combustion material to help improve incineration efficiency, reduce fuel consumption, recovery of high-temperature hot water to drink steam can be used to generate electricity.