Organic waste gas adsorption and purification system of multi-layer fluid bed

The embodiment of the invention discloses a multi-layer fluid bed organic waste gas adsorption and purification system which comprises an adsorption and purification unit, a desorption and regeneration unit and a cooling unit, and the adsorption and purification unit is used for intermittently and uniformly discharging filler of an upper-stage adsorption layer to a lower-stage adsorption layer according to a set frequency; the saturated filler of the bottom adsorption layer is fed into a desorption regeneration unit, and organic waste gas flowing from bottom to top is purified through each stage of adsorption layer; the desorption regeneration unit is used for intermittently and uniformly feeding the filler of the upper desorption layer to the lower desorption layer according to a set frequency, feeding the high-temperature clean filler of the bottom desorption layer into the cooling unit, and heating the filler of each desorption layer through hot nitrogen or water vapor flowing from bottom to top; and the c