Incineration bottom ash hollow fibers and methods of making the same

By screening high-calcium-content incineration bottom ash and mixing it with organic solvents and polymers, hollow fibers were prepared using a dry-wet spinning method, solving the problem of incineration bottom ash reuse and realizing efficient and economical water treatment and wastewater purification applications.

CN122406394APending Publication Date: 2026-07-17MING CHI UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MING CHI UNIVERSITY OF TECHNOLOGY
Filing Date
2025-01-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The reuse of incineration bottom ash is limited, and traditional recycling methods can only recover a portion of the metal, resulting in a large amount of waste residue and increasing the environmental burden.

Method used

Hollow fiber precursors were prepared by mixing high-calcium-content incineration bottom ash with organic solvents and polymers to form a spinning solution, and then sintering at 1100℃ to 1200℃ to form hollow fibers.

Benefits of technology

This technology enables the efficient reuse of incineration bottom ash, reduces energy consumption and costs, and produces hollow fibers with impurity adsorption properties, suitable for water treatment and wastewater purification.

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Abstract

本发明公开一种焚化底渣中空纤维及其制备方法。制备方法包含：筛选元素组成中的钙元素含量大于硅元素含量的焚化底渣；将经筛选的焚化底渣与有机溶剂及高分子聚合物混合，以形成纺丝液；将纺丝液通过纺丝设备以干‑湿纺丝法进行纺丝，以形成中空纤维前驱体；并对中空纤维前驱体以介于1100℃至1200℃的烧结温度进行烧结，以形成由焚化底渣构成的中空纤维。其中，焚化底渣中空纤维的比表面积SBET为0.1m2 / g至0.5m2 / g，并且微孔的平均孔径Dp为450nm至850nm。
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