Composite gas-liquid separator

The utility model discloses a composite gas-liquid separator, and belongs to the technical field of gas purification. Comprising an outer cylinder body, a rotational flow section, a backflow section, a partition plate, a descending cylinder, a swirler, an air inlet, an air outlet, a first liquid outlet, a second liquid outlet, a top plate, a liquid collecting cone, an air baffle plate and a rotational flow plate, a top plate is arranged at the top of the outer cylinder, an air inlet is formed in the top plate, a first liquid outlet is formed in the middle of the side face of the outer cylinder, an air outlet is formed below the side face of the outer cylinder, and a liquid collecting cone and a second liquid outlet are formed in the bottom of the outer cylinder; the interior of the outer barrel is divided into an upper section and a lower section by a partition plate, the upper section is a rotational flow section, the lower section is a backflow section, and the rotational flow section is connected with the