Indirect cooling apparatus for bituminous shale carbonization cool water system

The utility model discloses an indirect cooling device for an oil shale retorting cooling water system, which comprises a cooling tower, a cooling tank, a cooling pump, a cooling water tower, a cooling water tank and a cooling water pump. The cooling water tank is located below the cooling water tower, and cooling water in the cooling water tower enters the cooling water tank from the bottom of the cooling water tank. The indirect cooling device further comprises a heat exchanger, and a washing water pipe at the lower portion of the cooling tower is connected to the cooling tank, then is connected to the heat exchanger through the cooling pump, and finally returns to the cooling tower through the heat exchanger. An industrial clean water pipe connected with the cooling water tank is connected to the heat exchanger through the cooling water pump, and enters the cooling water tower from the heat exchanger. Clean water and washing water form an independent circulation system respectively with the indirect coolin