Rectifying tower oil gas recovery system

The utility model relates to the technical field of rectifying towers, in particular to a rectifying tower oil gas recovery system which comprises a rectifying tower body, a heat conduction oil jacket, an oil collecting tank, a pressure balancing device and a cooling device. The oil collecting tank is arranged outside the rectifying tower body, an air inlet pipe is communicated between the top of the oil collecting tank and the heat-conducting oil jacket, and an oil outlet pipe is communicated with the bottom of the oil collecting tank; the pressure balancing device is arranged on the oil collecting tank and can adjust the air pressure in the oil collecting tank to keep the air pressure in the oil collecting tank in a positive pressure state all the time; the cooling device is arranged outside the oil collecting tank and can cool oil gas introduced into the oil collecting tank through the gas inlet pipe. On one hand, pollution to the environment caused by direct emission of oil and gas can be reduced, and on