The Analysis Of Oxygen-enhanced Combustion In The Condensing Gas-fired Hot Air Furnace

摘要

Oxygen-enhanced combustion is a high efficient burning technology.When it is applied in condensing gas-fired Hot Air Furnace,it is not only reducing the combustion-supporting air,but also greatly increasing the content of vapor in exhausted smoke and heightening the dew point.It is propitious to reclaim vaporization heat in the exhausted smoke.Through academic calculating,when we adopt oxygen-enhanced combustion,the hot air furnace combusts more fully,the volume of the exhausted smoke is reduced greatly and the water vapor quality percentage of the flue gases is increased.When the condensation heat transfer technology is used,the condensation rate of the vapor is increased upwards of 90％ and the heat loss of the smoke can be reduced below 2％.At the same time,the condensing boiler does not save energy but also reduce the harmful substance discharged into the atmosphere.That is because of the condensation water dissolving part of the harmful substances in the exhausted flue gas especially in high sulfur content fuel.Through the actual project tests,the sulfides and the dust can be reduced to more than 90％.The environmental protection is very prominent.