Composite VOCs concentration homogenizing agent and preparation method thereof

By preparing a composite VOCs concentration homogenizer, a multi-level pore structure was constructed using materials such as steam-activated attapulgite clay and modified diatomaceous earth. This solved the adsorption-desorption cycle problem of existing homogenizers when VOCs concentration fluctuates, and achieved a stable homogenization effect of VOCs concentration.

CN122076388AActive Publication Date: 2026-05-26NANJING YANJIANG ACAD OF RESCOURCES & ECOLOGY SCI CO LTD
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Patent Information

Application Number
CN202610534671.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-22
Publication Date
2026-05-26
Estimated Expiration
2046-04-22

AI Technical Summary

Technical Problem

Existing homogenizers have excessively strong adsorption capacity when dealing with VOCs concentration fluctuations, making it difficult to achieve an effective adsorption-desorption cycle, resulting in poor homogenization effect and failing to meet pretreatment requirements.

Method used

A composite VOCs concentration homogenizer is used, which is composed of steam-activated attapulgite clay, modified diatomaceous earth, nano ZrO2, mesoporous silica, powdered activated carbon and molecular sieves. Through high-temperature steam activation, phosphonic acid modification and mechanical mixing, a multi-level pore structure is constructed to realize the dynamic adsorption-desorption cycle of VOCs.

Benefits of technology

It achieves stable homogenization of VOCs concentration, can rapidly adsorb at high concentrations and desorb promptly at low concentrations, adapts to fluctuations in VOCs concentration, and improves the stability and reliability of pretreatment.

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Abstract

The invention relates to the technical field of preparation of homogenizing agents, and discloses a composite VOCs concentration homogenizing agent and a preparation method thereof. The homogenizing agent is prepared by taking powdered activated carbon, steam activated attapulgite clay and modified diatomite as main bodies and combining a compound molecular sieve, a lubricant and a binder, the preparation method comprises the following steps: activating attapulgite clay by saturated steam at a high temperature to obtain modified clay, modifying diatomite by phosphonic acid, compounding the modified diatomite with nano ZrO2 and mesoporous silicon at a high speed to obtain modified diatomite, uniformly dry-mixing the powder components, adding water, molding, and carrying out stepped drying and heat preservation curing to obtain the product. According to the present invention, the porous channel dredging through steam activation, the synergistic modification of the phosphonic acid and the nanometer oxide, and the multi-stage pore component compounding are performed to construct the adsorption-slow release synergistic multi-stage pore structure, such that the severe fluctuation of the VOCs concentration can be significantly inhibited, the homogenization effect is stable and lasting, and the method is suitable for the VOCs homogenization treatment under the industrial waste gas concentration fluctuation working condition.
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