Pure low heat cement kiln waste heat utilization system

The utility model discloses a pure low heat cement kiln waste heat utilization system, including rotary kiln, pre -heater and the cold machine of comb, the pre -heater is connected with SP exhaust -heat boiler, combs to cool and quick -wittedly is connected with the AQC boiler, and the steam flow path on AQC boiler and the SP boiler is connected with turbo generator, and turbo generator connects the condenser, the water path connection second flash vessel that condenses of condenser goes out water collection case, the second flash vessel goes out the out water piping connection AQC boiler economizer of water collection case, external three routes communicating pipe of AQC boiler economizer feeds through and connects AQC stove steam pocket this three routes communicating pipe respectively,and the acting of turbo generator preceding stage is connected to SP stove steam pocket and first flash vessel, the outlet duct of AQC stove steam pocket, SP stove steam pocket, the play water pipingconnection second flash ve