Waste gas recovery device for boiler room

The utility model relates to the field of waste gas recovery, in particular to a boiler room waste gas recovery device. The boiler room waste gas recovery device comprises a heat exchange barrel and a fixing shell, a heat exchange mechanism is fixedly installed in the heat exchange barrel, a sealing cover is fixedly installed on one side of the fixing shell through bolts, and a gas purification device is fixedly installed in the fixing shell. According to the boiler room waste gas recovery device, heat in waste gas is absorbed through the heat exchange mechanism, hot water is discharged through the water outlet pipe, daily use of people is achieved, and the heat utilization rate is increased; waste gas is conveyed to a gas purification device through a first ventilation pipe, purification of the waste gas of the boiler room is achieved, and an activated carbon impurity removal tank, a carbon monoxide treatment tank, a hydrogen sulfide treatment tank, a carbon dioxide treatment tank, a dust sensor, a carbon mo