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

Abstract

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 cooling unit is used for intermittently and uniformly discharging the filler of the upper-stage cooling layer to the lower-stage cooling layer according to a set frequency, feeding the normal-temperature clean filler of the bottom-stage cooling layer into the adsorption purification unit, and cooling the filler of each stage of cooling layer through air flowing from bottom to top.

Description

technical field [0001] The embodiments of the present application relate to the technical field of air treatment, and in particular to a multilayer fluidized bed organic waste gas adsorption purification system. Background technique [0002] Production workshops (such as: gluing and bonding workshops in shoe factories, printing workshops in printing factories, paint and coating production workshops, various organic chemical products production workshops, fiberglass product production workshops, painting, spraying workshops, musical instruments, wooden furniture surface treatment workshops Adhesive tapes, leather, adhesive production workshops, etc.) will produce many harmful gases during the manufacturing process of products, such as a variety of common VOC organic waste gases. The quality of indoor air quality and the emission of exhaust gases have become the current research one of the important subjects. [0003] At present, the fixed adsorption bed technology is basical...

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Problems solved by technology

[0003] At present, the fixed adsorption bed technology is basically used in the VOC organic waste gas treatment application market. No matter the process route chooses activated carbon, carbon fiber, adsorption resin, zeolite molecular sieve or honeycomb adsorption wheel, etc., its basic form is a fixed bed structure. The disadvantages of fixed adsorption beds gradually appear during long-term use, which affect the promotion and development of VOC organic waste gas treatment process with fixed bed structure

The fixed bed adsorption technology has the following defects: 1) The adsorption efficiency decreases with the increase of the use time, and the life cycle is short; 2) The regeneration efficiency of the regeneration technology is low, and there are potential safety hazards; 3) The waste activated carbon and other adsorption fillers have secondary pollution Problem; 4) Poor resistance to shock load variability, unstable adsorption efficiency of fixed bed, and unstable up-to-standard discharge;

[0004] 5) Most of the post-treatment processes are different forms of thermal oxidation treatment, which increases carbon emissions

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