Steam heat recovery device of charcoal-based fertilizer granulator

The utility model discloses a steam heat recovery device of a charcoal-based fertilizer granulator, which comprises a gas collection device and a heat exchange tank, and the gas collection device is arranged at an exhaust port at the top end of the granulator; the heat exchange tank is connected with the gas collection device through a high-temperature pipe; the heat exchange tank comprises an outer tank and an inner tank, a heat exchange cavity is formed between the outer tank and the inner tank, the outer tank is communicated with the bottom of the inner tank, a plurality of funnel-shaped heat exchange plates penetrating through the side wall of the inner tank are arranged on the upper portion of the inner tank, each heat exchange plate is divided into a heat absorption part and a heat dissipation part, the heat absorption parts are located in the inner tank, the heat dissipation parts are located in the heat exchange cavity, and the heat dissipation parts are higher than the heat absorption parts. The heat