VOCs treatment equipment and method based on room temperature ozone catalytic oxidation and micro-nano bubbles

Through the multi-cascade equipment of ozone catalytic oxidation and micro-nano bubbles at room temperature, the high cost and stability problems in the existing VOCs treatment technology are solved, and efficient treatment and stable operation of VOCs exhaust gas with high air volume and low concentration are achieved.

CN116139676BActive Publication Date: 2025-08-19ZHONGHUANLIAN (GUANGZHOU) ENVIRONMENTAL PROTECTION CO LTD
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Patent Information

Application Number
CN202310383504.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-04-10
Publication Date
2025-08-19
Estimated Expiration
2043-04-10

AI Technical Summary

Technical Problem

The existing VOCs treatment technology has problems such as high construction costs, high operating costs, catalyst poisoning and secondary pollution, and it is difficult to efficiently deal with VOCs waste gas with high air volume and low concentration.

Method used

Multi-cascade treatment equipment for catalytic oxidation of ozone and micro-nano bubbles are adopted, including pretreatment zone, catalytic reaction zone and deep purification zone. High-volume cyclone dust collector, ozone catalytic oxidation reactor and micro-nano bubble spray module are used to achieve efficient decomposition and purification of VOCs.

Benefits of technology

Realize efficient digestion of VOCs under normal temperature conditions, reduce operating costs and energy consumption, improve VOCs degradation rate and pollutant removal rate, strong operation stability, and reduce labor intensity.

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Abstract

The present invention relates to a VOCs treatment device and method based on room-temperature ozone catalytic oxidation and micro-nano bubbles. The device comprises a pretreatment zone, a catalytic reaction zone and a deep purification zone which are sequentially connected. The pretreatment zone is provided for removing more than 99% of particulate matter in VOCs waste gas by a large-volume cyclone dust collector. At the same time, ozone generated by a first ozone decomposition module is fully mixed with the VOCs waste gas to decompose the VOCs waste gas. The catalytic reaction is then provided to deeply oxidize and decompose VOCs at room temperature, and to decompose cyclic compounds by ring-opening oxidation. The deep purification zone is then provided for convection and uniform mixing of the VOCs waste gas and the sprayed micro-nano bubble solution from bottom to top. At the same time, the rupture of the micro-nano bubbles locally generates a high-temperature, high-pressure subcritical state and produces a large number of active oxygen free radicals, thereby enhancing the degradation ability of the spraying process. Compared with existing commonly used technologies, the present invention has lower operating costs and energy consumption and stronger operating stability.
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