Waste gas purification device and system capable of recycling absorption liquid

The utility model discloses a waste gas purification device and system for recycling absorption liquid, the device comprises a plurality of absorption units and a recycling unit, and the plurality of absorption units are arranged in a grading manner; the last-stage absorption unit is connected with a liquid outlet of the recovery unit, a liquid outlet of the first-stage absorption unit is connected with a liquid inlet of the recovery unit, and a liquid outlet of the rear-stage absorption unit is connected with a liquid inlet of the front-stage absorption unit; the gas inlet of the first-stage absorption unit is connected with a waste gas emission device, the gas outlet of the last-stage absorption unit is connected with a subsequent treatment device, and the gas inlet of the later-stage absorption unit is connected with the gas outlet of the preceding-stage absorption unit. By means of the technical means, the problems that in the prior art, the VOCs absorption efficiency is low, and the absorption liquid is