The invention discloses a power generation, energy saving and dedusting method by utilizing heat waste of
exhaust gas in an electric furnace through
organic rankine cycle, which is characterized in that the
exhaust gas in the electric furnace is discharged from a fourth hole, and enters a
combustion settling chamber after
cold air interfuses the
exhaust gas through a water-cooling sliding sleeve; the exhaust
gas passing through the
combustion settling chamber enters a uniform velocity
waste heat exchanger; the exhaust gas discharges heat, enters a bag-type
dust collector, and is pressed into an exhaust funnel to be discharged into
atmosphere by a main fan after being dedusted; meanwhile, an organic working medium is driven by a working medium pump to absorb the heat in a straight
pipe plate
heat pipe exchanger to be changed into vapor; and the working medium vapor swells to do work in a
steam turbine to drive a generator to generate
electricity. The working medium vapor discharged from a low-boiling-point working medium
steam turbine is condensed into saturation liquid by a condenser; and the working medium liquid is pressurized by the working medium pump, and is then fed into the straight
pipe plate
heat pipe exchanger, so as to start a new round of circulation. The power generation, energy saving and dedusting method by utilizing the heat waste of the exhaust gas in the electric furnace through the
organic rankine cycle is characterized in that R600 is adopted as a circulating organic working medium. With the adoption of the power generation, energy saving and dedusting method by utilizing the heat waste of the exhaust gas in the electric furnace through the
organic rankine cycle, the
heat energy in the exhaust gas is recovered to a maximum limit to be transformed into high-grade
electric energy. The device is low in investment, low in operation
energy consumption and good in environment-protection effect.