A：The condensing steam generator is a steam generator that condenses the water vapor in the flue gas into water and recovers its latent heat of vaporization as a steam generator, so that the thermal efficiency can reach 107%. A traditional steam generator can be upgraded to a condensing steam generator by adding a condensing heat exchanger. It should be said that transforming the traditional steam generator into a condensing steam generator is the main way to greatly improve the thermal efficiency of the steam generator and realize the effective utilization of resources.
In the exhaust heat loss of the steam generator, the heat loss carried by water vapor accounts for 55% to 75% of the exhaust heat loss. , can more effectively reduce the heat loss of the exhaust gas and improve the thermal efficiency of the steam generator.
The exhaust gas temperature of the condensing steam generator can be reduced to below 40°C~50°C, which can condense part of the water vapor in the flue gas, recover the latent heat of vaporization of the water vapor, and recover a certain amount of water vapor. The right amount of water can also remove harmful substances. Due to the increase in the amount of water vapor condensed, the thermal efficiency becomes larger.
The heat energy recovered by the condensing steam generator includes the latent heat of high-temperature flue gas and the latent heat of vaporization of water vapor. The latent heat of recovery treatment will not change greatly due to the drop of flue gas temperature.
However, the latent heat of vaporization of the recovered water vapor changes greatly due to the decrease in temperature. When the exhaust gas temperature is high, the latent heat of the recovery process is small. Due to the drop in exhaust gas temperature, the latent heat of the recovery process increases rapidly and then stabilizes. , From the point of view of condensation, as the flue gas temperature decreases, the difficulty of flue gas condensation work increases.
Post time: Jul-17-2023
