Flue gas heating device

The utility model discloses a flue gas heating device, the heat transfer device of flue gas in including casing, sealed tuber pipe, supercharging device, seal box and being used for heating shell body, seal box sealing connection is in the casing outside, and supercharging device is used for to carrier gas in the seal box, and supercharging device installs on sealed tuber pipe, and the import of sealing the tuber pipe is located the exit end of casing inner chamber, and the export of sealed tuber pipe is located the seal box. High temperature, malleation flue gas through letting in in the sealbox after flue gas heating device heating are escaped and are got into the seal box as sealed wind, the swing joint point who stops the high -corrosiveness in the casing, low warm and humid flue gasto pass through heat transfer device, avoid the low warm and humid flue gas of high -corrosiveness to condense in the seal box, lead to the fact the corruption to heat transfer device's splice and seal box, consequently, and t