Waste heat utilization system of gas burning kiln for lime production

The utility model discloses a waste heat utilization system of a gas burning kiln for lime production. The waste heat utilization system comprises a first heat exchanger, an exhaust port of the air suction beam communicates with a waste gas inlet of the first heat exchanger; an outlet of the combustion fan communicates with an air inlet of the first heat exchanger. A water outlet of the soft water tank is communicated with a water inlet of the steam generator through a water feeding pump; a heat conduction oil outlet of the gas burning kiln is communicated with an oil inlet of the steam generator through an oil return pipeline, and an oil outlet of the steam generator is communicated with an oil inlet of the second heat exchanger. The device has the advantages that waste gas exhausted from the air suction beam on the kiln top exchanges heat with combustion-supporting air through the first heat exchanger, the combustion-supporting air is effectively preheated, and heat loss is reduced; heat conduction oil disc