Fermentation tank

A fermentation tank, characterized by including:

• a tank body, having a top end and a bottom end and enclosing a cavity therein, a vertical direction being defined from a line composed of the top end and the bottom end, the tank body having a material inlet and a material outlet;
• a heat exchange structure, disposed on a wall of the cavity for heat exchanging with the tank body;
• at least one flow disturbing plate, the at least one flow disturbing plate being an elongated plate and having a width direction, a longitudinal direction, and a thickness direction which are perpendicular to each other, the width direction being parallel to a radial direction of the tank body, the longitudinal direction being parallel to the vertical direction, a length of the at least one flow disturbing plate being larger than a width thereof, the at least flow disturbing plate being arranged in the cavity and being connected to the tank body, the at least one flow disturbing plate having a heat exchange channel therein, two ends of the heat exchange channel communicating an exterior respectively so that heat is exchanged between the at least one flow disturbing plate and the cavity.