Acid dew point is one of the important parameters in boiler design and operation. Its value is closely related to exhaust gas temperature

boiler efficiency

coal consumption and exhaust heat utilization of boiler tail gas

which requires higher accuracy for accurate calculation of acid dew point. From different aspects

researchers in domestic and aboard put forward a lot of acid dew point estimation formula

and some scholars compared the estimation formula of the acid dew point from the perspective of SO3 volume fraction and water vapor volume fraction

but the study did not consider the effects of coal quality changes and other factors. Therefore

starting from the sulfur content of different coal types and the volume fraction of SO3 and water vapor after coal combustion

the acid dew point values of the flue gas were calculated by programming the commonly used acid dew point estimation formula

and the results were analyzed. It shows that

compared with the A.G.Okkes formula

the И.A.Bapahoba formula has small error

and the empirical formula of the Soviet Union obtains a lower acid dew point value. The fly ash content in the flue gas has great influence on the level of acid dew point