The utility model belongs to the technical field of
waste heat utilization equipment, and particularly relates to a
waste heat boiler which comprises a
waste heat boiler body and supporting legs, a waste heat
recovery structure is arranged above the waste heat boiler body and comprises a filtering mechanism and a
recovery mechanism, and the filtering mechanism comprises a supporting plate, a gas guide
pipe, an installation plate, a fixing plate and a rotating rod. The top of the supporting plate is connected with the bottom of the recycling box, one end of the waste heat boiler communicates with one end of the gas guide
pipe, and the two ends of the mounting plate are connected with the inner wall of the recycling box. According to the waste heat boiler, after
flue gas enters the recycling bin, the flow speed is reduced, the
retention time is prolonged, the filter screen can effectively intercept
solid impurities in the
flue gas,
pollutant emission is reduced, environmental
pollution is avoided, impurities accumulated on the surface of the filter screen can be automatically removed, blocking is prevented, and the filtering efficiency is maintained; and meanwhile, the filter screen can be quickly and conveniently disassembled and assembled, and the working efficiency of the waste heat boiler is improved.