Process and apparatus for the preparation of a solid fulvic acid

By combining alkaline dissolution and acid precipitation extraction with low-temperature drying technology and integrated equipment, the problems of high loss of active ingredients and high energy consumption in the preparation of fulvic acid solids have been solved, realizing the large-scale production of high-purity, fully water-soluble fulvic acid solids and improving product quality and production efficiency.

CN122404360APending Publication Date: 2026-07-17QIQIHAR UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QIQIHAR UNIVERSITY
Filing Date
2026-04-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing solid fulvic acid preparation processes suffer from high loss of active ingredients, low purification purity, drying clumping, high energy consumption, and poor equipment adaptability, making it difficult to achieve large-scale production of high-purity, fully water-soluble fulvic acid.

Method used

The process combines alkali-soluble acid precipitation extraction with low-temperature drying technology, and is equipped with integrated preparation equipment, including pretreatment, centrifugation, low-temperature drying and waste heat recovery, to achieve efficient purification and continuous production of fulvic acid.

Benefits of technology

It improves the activity retention rate and purity of fulvic acid, reduces energy consumption, and enables the stable production of high-purity, fully water-soluble fulvic acid solid products. The equipment has a high degree of automation, strong adaptability, and good environmental performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of preparation method and equipment of fulvic acid solid, belong to biological organic fertilizer raw material processing technical field.The high-purity, fulvic acid solid finished product of total water-soluble is obtained by raw material processing, alkali dissolution acid extraction, centrifugal separation, drying preservation and other steps.The equipment includes pretreatment unit, extraction reaction kettle, concentration device, low-temperature drying machine, screening forming machine and tail gas recovery component, each unit is closed in series, realizes material continuous flow and waste heat recycling, with the characteristics of automatic control, gentle processing, energy saving and consumption reduction.The preparation method of the application is stable in operation, strong controllability, can maximize the retention of fulvic acid active functional group, the obtained solid product is high in purity, good in solubility, low in impurity content, the equipment structure is compact, low in running cost, can realize large-scale continuous production, is suitable for industrialized preparation of multiple raw materials such as mineral source fulvic acid, biomass fulvic acid, and has environmental protection and economy.
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