The utility model provides a vertical gas-liquid separation, including a jar section of thick bamboo, jar section of thick bamboo upper portion is provided with the entry, and the below of jar inside entry of a section of thick bamboo is provided with the guide plate, the said jar of inside below of a section of thick bamboo is provided with the inside lining, is provided with an album sand jar below the inside lining, a collection sand jar and a jar section of thick bamboo intercommunication, collection sand jar below fixedly connected with tank bottoms, the liquid outlet that sets up on the tank bottoms is connected with down elbow bend, jar section of thick bamboo top fixedly connected with cover, jar section of thick bamboo upper portion gas outlet is provided with go up elbow bend. The utility model discloses open flow gas-liquid mixture body pressure dynamic height can be solved, technological problem such as difficult, that the erosion is serious are separated. The vertical gas-liquid separation has (liquid) the structure of evenly admitting air, and (liquid) the pipeline that admits air adopts enhancement elbow bend, resists the erosion that the direct-flushing brought, and pure working life is greater than 1000 hours. The last pipeline of giving vent to anger of vertical gas-liquid separation is the seamless thickening pipe of 3", and connect by union 1502, the drain pipe line is the seamless thickening pipe of 3"down, and connect by union 1502, convenient to detach, maintenance.