Supercritical carbon dioxide extraction tank and extraction system including same

The invention relates to a supercritical carbon dioxide extraction tank. The supercritical carbon dioxide extraction tank comprises an extraction tank main body, a refining part and a power part, wherein the extraction tank main body sequentially comprises a top cover, a tank side wall and a base plate from top to bottom, a material inlet is formed in the center of the top cover, and a solvent outlet is formed beside the material inlet; a material outlet, a solvent inlet and a connecting hole are formed in the base plate in a penetration manner; the refining part comprises a feeding cylinder and a refining net, a plurality of discharging holes are formed in the side wall of the feeding cylinder in a penetration manner, and the feeding cylinder is externally sleeved with the refining net; and the power part comprises an electric motor, and the electric motor is fixedly connected with the lower end of the feeding cylinder. According to the supercritical carbon dioxide extraction tank, by virtue of a supergravity liquid drop refining manner, the contact area between a liquid material and a carbon dioxide solvent is increased, and the extraction efficiency is effectively improved. An extraction system including the supercritical carbon dioxide extraction tank can be used for solving the problem that the liquid material is difficultly continuously treated by virtue of a supercritical fluid extraction process.