Adsorption treatment of organic waste gas and desorption and regeneration process of adsorbent

Abstract

The invention provides a desorption and regeneration process after adsorption saturation of an adsorbent (comprising activated carbon, activated coke, zeolite and the like) for adsorbing organic matters in organic waste gas and a treatment process of tail gas generated in the desorption and regeneration process. The desorption and regeneration process includes desorbing and regenerating the adsorbent in a regeneration tank embedded with a steam injection system, wherein the steam injection system comprises a main steam pipeline and a plurality of dendritic secondary steam pipelines arranged onthe main steam pipeline, a steam nozzle is arranged on each secondary steam pipeline, and the steam injection system is embedded by the adsorbent; introducing superheated steam to heat the adsorbentin the regeneration tank, wherein most of the organic matters adsorbed by the adsorbent are desorbed at high temperature or are pyrolyzed and carbonized; and removing the organic matters and carbidesin pores of the adsorbent by steam purging to activate and regenerate the adsorbent. The treatment process includes treating the tail gas generated in the regeneration process is by tail gas treatmentequipment, wherein the tail gas treatment equipment specifically refer to tail gas condensation treatment equipment, tail gas incineration treatment equipment or tail gas condensation and incineration treatment equipment.

Description

technical field [0001] The invention relates to the field of desorption regeneration, in particular to an adsorbent (including activated carbon, activated coke, zeolite, etc.) that adsorbs organic matter in organic waste gas after adsorption and saturation, and a desorption regeneration process, as well as a tail gas treatment process generated during the desorption regeneration process . Background technique [0002] Activated carbon has a large specific surface area and has strong adsorption capacity for various organic and inorganic substances, so it is widely used in the adsorption and purification treatment process of various waste gases and waste water, as well as the separation treatment process of some mixtures, such as hydrocarbon-containing Adsorption and purification of exhaust gas, adsorption and purification of exhaust gas containing sulfur compounds, adsorption and purification of oily sewage, etc. [0003] In the adsorption treatment process, the activated ca...

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Problems solved by technology

In the steam regeneration process, it is generally necessary to lower the temperature of the activated carbon bed layer to a certain level before drying with air. Direct air drying at high temperature is prone to safety accidents, and the toxic and harmful gases generated after activated carbon regeneration are directly released into the environment. will pollute the environment

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