What does the Flue Gas Heater Circulate Continuously Through?

What does the Flue Gas Heater Circulate Continuously Through?

Continuous circulation in the working medium. The flue gas is cooled and the air is heated effectively without steam consumption. The power consumption of the air heater circulation pump is only 10 kW, which is very small compared to the heat recovery power in the flue gas. The air heater system operates at low pressure and the medium is hot water with a low temperature. Increases wall temperature, reduces flue gas corrosion and prevents ash blockage. No ash blowers are required. Compared with the heat pipe type, only the circulation pump is installed, which consumes a certain amount of electricity, but it is easy to operate, safe and reliable. Air heater is easy to set up and arrange, no need to replace the flue and air duct. Due to the thermal power requirements of the electrical heater heat pipe, the heater's air duct is generally required to be higher than the flue.

The forced circulation system can be arranged according to the site conditions. By selecting a reasonable electrical heater circulation pump head, the difference in duct resistance caused by different location configurations can be resolved. The power of the air heater circulation pump is 10kW, which is equivalent to 4kg/h standard coal, and its heat is equivalent to the enthalpy of 30kg steam. The exhaust gas temperature of small and medium-sized power station boilers is generally high. In order to prevent corrosion of the preheater and heating air, forced circulation air electric heater can solve the above contradiction and save steam. The economic benefits are very obvious.