A fluorine-containing sludge recycling device and method based on multi-stage pneumatic heat exchange

CN122102472APending Publication Date: 2026-05-29ZHEJIANG WATER HEALER ENVIRONMENTAL TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG WATER HEALER ENVIRONMENTAL TECH CO LTD
Filing Date
2026-04-23
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing fluorinated sludge drying technologies suffer from agglomeration and clumping, resulting in surface crusting and difficulty in evaporating internal moisture, which makes it difficult to meet the moisture content requirements for hydrofluoric acid production.

Method used

A multi-stage pneumatic heat exchange device is adopted, and the sludge is dispersed and dried once and twice through the first drying structure and the second drying structure, respectively. The heating structure preheats the air and delivers it to hot air at different temperatures, which prolongs the contact time between the fluoride-containing sludge and the hot air, thereby improving the drying uniformity and efficiency.

Benefits of technology

It effectively reduces the moisture content of fluoride-containing sludge, meets the requirements of hydrofluoric acid production, improves drying uniformity and efficiency, and avoids agglomeration.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a fluorine-containing sludge recycling device and method based on multi-stage pneumatic heat exchange. The device comprises a heating structure, a first drying structure and a second drying structure. One end of the heating structure is connected with a air supply structure, and the other end of the heating structure is connected with the air inlet ends of the first drying structure and the second drying structure. The second drying structure is connected with the first drying structure. The first drying structure has a first scattering assembly for scattering fluorine-containing sludge, and the first drying structure is used for drying the scattered fluorine-containing sludge. The second drying structure has a second scattering assembly for twice scattering the fluorine-containing sludge, and the second drying structure is used for twice drying the twice scattered fluorine-containing sludge. The air outlet ends of the first drying structure and the second drying structure are connected with the heating structure, and the temperature in the second drying structure is higher than that in the first drying structure. The application improves the drying efficiency of fluorine-containing sludge and improves the heat energy utilization efficiency.
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