Vertical shaft capable of reducing waste gas emission based on gas double circulation

The utility model provides a vertical shaft capable of reducing waste gas emission based on gas double circulation. The vertical shaft comprises a vertical shaft body and an airflow shaft body. An air inlet pipe and a water inlet pipe are arranged on one side of the vertical shaft body, an outflow pipe is arranged on the other side of the vertical shaft body, the outflow pipe is perpendicularly connected with the vertical shaft body, a partition plate is arranged in the vertical shaft body, and the partition plate is vertically placed in the vertical shaft body in the radial direction of the vertical shaft and divides the vertical shaft body into a first cavity and a second cavity. A first hole for gas circulation is formed in the partition plate, and a second hole for gas circulation is formed between the bottom of the partition plate and the bottom of the vertical shaft; the airflow well body is arranged on the outflow pipe, a horizontal pipe is arranged between the airflow well body and the vertical well b