Low-resistance and efficient fluidization demister device and demisting method thereof

The invention discloses a low-resistance and efficient fluidization demister device and a demisting method thereof. A fluidization demister adopts a diameter-variable pipeline with a large top and a small bottom, wherein the diameter-variable pipeline is internally provided with a demisting cavity; airflow enters from the bottom of the diameter-variable pipeline and a demisting medium in the demisting cavity has a fluidized state under the action of the ascending airflow; meanwhile, the ascending airflow meets the demisting medium with the fluidized state; the direction of the airflow is deviated under the action of inertia, baffling and the like; liquid drops and solid grains in the airflow are continuously adsorbed, coagulated and intercepted by the spherical demisting medium; the airflow which is subjected to liquid drop removal by the demisting medium is exhausted from the top of the demister. Different proportions and porosity factors of the demisting medium are selected accordingto different air speeds