聚多巴胺和聚丙烯酰胺亲水性改性对煤特性及粉尘控制的影响研究

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science Pub Date : 2025-05-13 DOI:10.1016/j.ces.2025.121841

Wen-Peng Su , Qing-Guo Yao , Xiang-Ming Hu , Jin-Di Liu , Yan-Yun Zhao , Jiao-Yun Hou

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引用次数: 0

摘要

为解决煤本身的疏水性问题，研究了基于聚多巴胺和聚丙烯酰胺的亲水性改性（PDA/PAM）对煤尘性能和抑尘性能的影响。采用工业分析和同步热分析仪对PDA/PAM亲水性改性煤样的煤质、热解和燃烧特性进行了分析。结果表明，改性前后煤质变化幅度在1%以内。同时热分析仪结果显示，改性前后煤样的热解和燃烧过程相似，数值也基本相似，说明PDA/PAM对煤样的燃烧特性影响不大。对改性前后的煤样喷施化学抑尘剂，对比分析其透气性、保水性和抗风蚀性。结果表明，改性煤样的渗透深度、保水性和抗风蚀性分别比未改性煤样提高至少6.42倍、0.72%和70%。因此，利用PDA/PAM对煤进行亲水改性，可以在不影响煤特性的情况下改善煤层注水润湿效果，提高化学抑尘剂对煤尘的抑制性能。

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Study on the effect of hydrophilic modification of polydopamine and polyacrylamide on coal characteristics and dust control

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Study on the effect of hydrophilic modification of polydopamine and polyacrylamide on coal characteristics and dust control

To solve the problem of hydrophobicity of coal itself, the effect of hydrophilic modification based on polydopamine and polyacrylamide (PDA/PAM) on coal dust properties and dust suppression performance was clarified. The coal quality, pyrolysis and combustion characteristics of PDA/PAM hydrophilic modified coal samples were analyzed by industrial analysis and synchronous thermal analyzer. The results showed that the range of changes in coal quality before and after modification was within 1%. The results of the synchronous thermal analyzer showed that the pyrolysis and combustion processes of the coal samples before and after the modification were similar, and the numerical values were also basically similar, which demonstrated that PDA/PAM did not have a large effect on the combustion characteristics of the coal samples. Coal samples before and after modification were sprayed with chemical dust suppressants to comparatively analyze their permeability, water retention, and wind erosion resistance. The results showed that the depth of permeability, water retention, and wind erosion resistance of the modified coal samples could be improved by at least 6.42 times, 0.72%, and 70%, respectively, compared to unmodified coal samples. Therefore, by using PDA/PAM for hydrophilic modification of coal, the wetting effect of coal seam water injection can be improved without affecting coal characteristics, and the inhibitory performance of chemical dust suppressants on coal dust can be improved.

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来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.