The utility model discloses a boiler
flue gas
waste heat utilization device which comprises a heat exchange box, a heat exchange
pipe is arranged in the heat exchange box, one side of the heat exchange
pipe is communicated with a
smoke exhaust pipe, the other end of the heat exchange
pipe is provided with a communicating pipe and a dust removal box, a
spoiler is arranged in the heat exchange pipe, the heat exchange pipe is provided with radiating fins in the heat exchange box, and the
spoiler is hinged to the
smoke exhaust pipe. The liquid is arranged in the heat exchange box, when
flue gas passes through the heat exchange pipe, heat is dissipated into the liquid through the cooling fins for heat
recovery and application, the heat is dissipated into the liquid through the cooling fins, the heat is dissipated into the liquid through the cooling fins, and the heat is dissipated into the liquid through the cooling fins for heat
recovery and application through the arrangement of the spoilers, so that the heat
recovery efficiency is improved. The
flow time of
smoke in the heat exchange pipe is prolonged, the heat exchange effect is improved, the adjusting pipe is driven by the adjusting device to move, the adjusting head is driven by the adjusting pipe to make contact with the
spoiler, the overturning angle of the spoiler is adjusted, the circulation
radius of the smoke in the smoke
exhaust pipe is changed, and the flow speed of the smoke in the smoke exhaust pipe is adjusted.