Fluidized bed adsorption-fluidized bed desorption coupled efficient VOCs (volatile organic compounds) treatment system and method

Abstract

The invention discloses a fluidized bed adsorption-fluidized bed desorption coupled efficient VOCs treatment system and method, through separation of an adsorption system and a desorption system, online adsorption and desorption of an adsorbent are realized, and the problems of safety and heat conflict caused by sharing one device are solved. The adsorption system adopts a full-automatic feeding and discharging fixed bed, adsorbents are automatically updated, and manpower loss is reduced. By adopting the multi-stage fluidized bed desorption, continuous and uniform high-concentration and small-air-volume desorption gas is formed, the treatment capacity of tail end treatment equipment can be reduced, and the treatment difficulty is reduced. According to the invention, the problems of non-uniform adsorption, incomplete desorption and adsorption and desorption heat conflict of an adsorbent in waste gas treatment are solved, and an efficient, convenient, energy-saving and safe treatment system is provided for treatment of large-air-volume and low-concentration organic waste gas.

Description

technical field [0001] The invention relates to the technical field of organic waste gas treatment, in particular to a fluidized bed adsorption-fluidized bed desorption coupled high-efficiency VOCs treatment system and method, especially suitable for the treatment of organic waste gas with large air volume and low concentration of VOCs. Background technique [0002] The industrial production process of some industries will produce large air volume and low concentration of exhaust gas, such as rubber manufacturing industry, viscose fiber industry, spraying industry, etc. If this gas is discharged directly, it will have adverse effects on the environment; if the concentration treatment process is not used, the large gas volume will make the cost high, and the low concentration will lead to unsatisfactory treatment effects; if the conventional concentration treatment process is used, such as rotary concentration, concentration If the multiple is too low, the air volume will not...

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Problems solved by technology

Therefore, this patented technology is difficult to realize intermittent adsorbent replacement and renewal, and it is difficult to make full use of the saturated adsorption capacity of the adsorbent

Furthermore, there is no cooling process for the desorbed and regenerated adsorbent in this patented technology, and the cooling process is the key to recovering the adsorption capacity of the adsorbent. The adsorption capacity of the adsorbent at high temperature is far inferior to that of the cooled adsorbent.

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