| 水对煤润湿的临界表面张力测算研究 |
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| 引用本文： | 刘水文,聂百胜.水对煤润湿的临界表面张力测算研究[J].煤炭科学技术,2012,40(4):64-66,107. |
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| 作者姓名： | 刘水文 聂百胜 |
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| 作者单位： | 1. 中国煤炭科工集团常州自动化研究院,江苏常州,213015
2. 中国矿业大学北京资源与安全工程学院,北京100083／中国矿业大学北京煤炭资源与安全开采国家重点实验室,北京100083 |
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| 摘 要： | 为了提高煤层注水效果，描述了水对煤的润湿过程，试验测试了6种水溶液的表面张力及其与成庄矿煤样的接触角，利用Zisman方法计算得到了成庄矿煤样的临界表面张力。结果表明，肥皂水的表面张力最低，成庄矿煤样的平均临界表面张力为17．15mN／m，表面张力低于17．15mN／m的水能够对该煤样完全润湿和铺展；表面张力大于17．15mN／m的不同种类水，表面张力越逼近该值，其润湿效果越好，并提出可以利用临界表面张力来评价矿井水润湿煤的效果。
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| 关 键 词： | 润湿 接触角 临界表面张力 煤层注水 |
Study on Measurement and Calculation of Critical Surface Tension of Wetting Coal with Water |
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| LIU Shui-wen,NIE Bai-sheng.Study on Measurement and Calculation of Critical Surface Tension of Wetting Coal with Water[J].Coal Science and Technology,2012,40(4):64-66,107. |
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| Authors: | LIU Shui-wen NIE Bai-sheng |
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| Affiliation: | 2,3(1.Changzhou Research Institute of Automation,China Coal Technology and Engineering Group,Changzhou 213015,China; 2.School of Resources and Safety Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China; 3.National Key Lab of Coal Resources and Safety Mining,China University of Mining and Technology(Beijing),Beijing 100083,China) |
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| Abstract: | In order to improve the seam water injection effect,the paper introduced the coal wetting process with water.The coal surface tensions with six different aqueous solutions and the contact corner of coal samples from Chengzhuang Mine were tested and measured.The Zisman method was applied to calculate the critical surface tension of the coal samples from Chengzhuang Mine.The results showed that the surface tension with suds would be the lowest and the average critical surface tension of coal samples from Chengzhuang Mine would be 17.15 mN/m.As the surface tension lower than 17.15 mN/m,the water could make the coal fully wetted and fully expanded.Different kind water to make the surface tension higher than 17.15 mN/m,the surface tension more closely to the value and the wetting effect would be better.The critical surface tension could be applied to evaluate the effect of the coal wetting with mine water. |
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| Keywords: | wetting contact corner critical surface tension seam water injection |
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