Flue Gas Heat Exchanger, Cooling Air with Flue Gas

Flue Gas Heat Exchanger, Cooling Air with Flue Gas

A flue gas heat exchanger is a device used to recover heat from industrial flue gases and then transfer that heat to other fluids, such as air, to improve the thermal efficiency of the system. In this case, a flue gas heat exchanger is used to transfer heat from the flue gas to the air to reduce the temperature of the air or to provide preheating.

The following are the main functions and features of flue gas heat exchangers used to cool air:

1. Flue gas recovery:

Flue gas heat exchanger recovers heat from the flue gas by exchanging heat between the flue gas and air or other cooling medium. This helps to reduce energy consumption and improve the energy efficiency of the system.

2. Cooling air:

A common application of flue gas heat exchangers is to reduce the temperature of hot flue gas produced in industrial processes. This flue gas can be from combustion processes or waste flue gas from industrial production. By exchanging heat between this hot flue gas and air that needs to be cooled, the temperature of the air can be effectively reduced to meet specific process or environmental requirements.

3. Preheated air:

In some industrial processes, it is necessary to preheat the outside air to improve energy utilisation and process efficiency. Flue gas heat exchangers can be used to preheat the air by transferring the heat from the hot flue gas to the cold incoming air.

4. Areas of application:

Flue gas heat exchangers are widely used in coal-fired power plants, industrial boilers, steel manufacturing, chemical plants, cement production and other industrial processes to improve energy efficiency and reduce environmental impact.

5. Flue gas purification:

In addition to cooling air and recovering heat, flue gas heat exchangers can help purify flue gas in a number of applications. By cooling the flue gas, some of the pollutants in it can be settled or crystallised, thus reducing emissions to the environment.

The flue gas heat exchanger is a versatile device used to recover heat, cool air and improve the energy efficiency of industrial processes. It has important applications in a variety of industries and energy production areas, helping to reduce energy waste and environmental impact.