Device and method for gas sampling of pressurized fluidized bed

The invention discloses a device and method for the gas sampling of a pressurized fluidized bed. The device disclosed by the invention comprises a first filter, a ball valve, a second filter, a pressure reducing valve, a sluice valve and an absorption system which are sequentially connected through a pipeline; a connecting flange is arranged on the pipeline between the first filter and the ball valve; and a blowing pipe is arranged on the pipeline between the ball valve and the second filter. The invention is suitable for the accurate sampling of pollutants in the pressurized fluidized bed under the conditions of high temperature, high solid particle content and low pollutant concentration, is beneficial to the research of pollutant emission rules in the gasification course of the pressurized fluidized bed and promotes the development of energy source and environmental protection careers.