Normal-pressure vent gas-liquid separator

The utility model discloses a normal-pressure vent gas-liquid separator which comprises a support pipe, a separation pipe fixed on the support pipe, a gas inlet pipe communicated with the side wall ofthe separation pipe and tangentially entering, a vent pipe fixed at the top of the separation pipe and communicated with the separation pipe, and a blow-off pipe communicated with the separation pipe, the separation pipe comprises a pipe body, a first separation mechanism and a second separation mechanism, wherein the first separation mechanism and the second separation mechanism are fixedly connected with the pipe body; wherein the first separation mechanism comprises a fixed plate, a plurality of through-flow holes formed in the fixed plate, a separation net arranged above the through-flowholes, and supporting strips used for supporting the separation net; the second separation mechanism comprises a circulation plate and an isolation layer connected above the circulation plate; by adopting the vent gas-liquid s