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OALib Journal期刊
ISSN: 2333-9721
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低温加压热解脱氧对胜利褐煤亲水性的影响
, PP. 1409-1414
Keywords: 固定床,热解,含氧官能团,最高内在水分
Abstract:
？在固定床反应器中考察了低温（200~350℃）、加压（0.25~8.00mpa）热解条件下胜利褐煤主要含氧官能团的变化规律，并进一步分析了褐煤中含氧官能团的脱除对其吸水能力的影响。结果表明，温度升高对胜利褐煤中羧基和酚羟基的脱除非常有效，压力变化对羧基脱除影响极小，而在3.00~4.00mpa时对酚羟基脱除效果最佳；同时羧基对煤样的表面极性和亲水性具有决定性作用，当羧基含量不变时，固体比表面积对煤样的吸水性影响相对较明显。
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