An energy-saving type circulating exhaust from idle sludge drying system and application method

The present invention relates to an energy-saving type circulating exhaust from idle sludge drying system, comprising a hopper, the surge bin and heat exchanger. Hopper feed port provided Ⅰ, screw, screw and inlet phase surge bin Ⅱ; buffer connected with a disk dryer cartridge; and a heating medium inlet pipe bottom disc dryer, dry sludge outfall , condensate discharge port, the exhaust outlet is provided with a top ⅰ; dry sludge sewage outlet connected with a rotary stripper ⅰ; condensate discharge port connected with a condensate tank connected to the heat exchanger; ⅰ exhaust outlet is connected with a the rotary unloader ⅱ, connected to the separator venturi scrubber; ⅱ rotary discharger connected with the disk dryer; venturi scrubber is connected with a cooler, wash tank; wash tank and connected to the top of the pipe ⅵ, bottom sewage discharge pipes are connected, the pipe ⅷ; ⅷ conduit connected to the cooler. Meanwhile, the present invention also discloses a method of application of the system. The present invention, small investment, easy to implement and utilization rate.