Water coal slurry additive and waste water coal slurry suitable for coal slurry waste mixing preparation process

By combining magnesium aluminum silicate with other coal-water slurry additives, a stable network structure is formed, which solves the compatibility and stability problems in the coal slurry co-mixing preparation process and achieves efficient and environmentally friendly coal gasification.

CN117511615BActive Publication Date: 2026-05-29CHANGZHOU ZHONGNAN CHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGZHOU ZHONGNAN CHEM
Filing Date
2023-10-26
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing coal-water slurry additives have problems in coal slurry preparation processes, including high pollution, difficulty in transportation and storage, poor compatibility with waste residue and wastewater, low coal slurry concentration, poor stability, and low gasification efficiency.

Method used

The compounding of magnesium aluminum silicate with sodium lignosulfonate, sodium naphthalenesulfonate formaldehyde condensate, sulfonated acetone-formaldehyde condensate and other components forms a unique "card palace" type associated network structure, which enhances the suspension and stability of coal-water-blended materials. Moreover, magnesium aluminum silicate is non-toxic and odorless, and is easy to use in powder form.

Benefits of technology

It improves the concentration and stability of coal slurry, reduces the amount of additives and slurry preparation costs, reduces environmental pollution, and achieves an efficient and safe coal gasification process.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The application discloses a water-coal slurry additive suitable for a coal slurry blending waste preparation process and a waste-blended water-coal slurry, wherein the water-coal slurry additive comprises 50-99.9 Wt% of magnesium aluminum silicate, and / or 0.1-50 Wt% of sodium lignosulfonate, and / or 0.1-50 Wt% of sodium naphthalene sulfonate formaldehyde condensate, and / or 0.1-50 Wt% of sulfonated acetone-methylal condensate polymer. The water-coal slurry additive does not need to be prepared into a solution in advance and can be directly added into a coal grinding and slurry preparation system, the compatibility of the water-coal slurry additive with a coal-water-blended waste system is effectively improved, the coal slurry concentration is effectively improved, the process performance of the coal slurry is improved, and the water-coal slurry additive addition rate and the slurry preparation cost are reduced.
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