| 利用分散稳定性分析仪研究水煤浆的稳定性 |
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| 引用本文： | 李朋伟,杨东杰,楼宏铭,邱学青.利用分散稳定性分析仪研究水煤浆的稳定性[J].燃料化学学报,2008,36(5):524-529. |
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| 作者姓名： | 李朋伟 杨东杰 楼宏铭 邱学青 |
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| 作者单位： | 1.School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou510640, China; |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划)，广东省教育部产学研结合项目 |
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| 摘 要： | 采用Turbiscan Lab浓缩体系分散稳定性分析仪研究了改性木质素系分散剂（GCL3S）和萘系分散剂（FDN）对水煤浆稳定性及浆体中煤颗粒沉降行为的影响。结果表明，水煤浆中煤粒沉降行为为差异沉降，在水煤浆制备过程中，煤颗粒之间会发生团聚，掺1.0％GCL3S的水煤浆清液区高度及平均沉降速率仅为掺FDN的68％，木质素系分散剂制备的水煤浆稳定性能优于萘系。分散稳定性分析仪不仅可以用于水煤浆的稳定性分析，还有助于揭示分散剂对水煤浆的稳定作用机理。
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| 关 键 词： | 分散剂 水煤浆 稳定性 分散稳定性分析仪 |
| 收稿时间： | 2008-02-23 |
| 修稿时间： | 2008-05-30 |
Study on the stability of coal water slurry using dispersion-stability analyzer |
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| LI Peng-wei,YANG Dong-jie,LOU Hong-ming,QIU Xue-qing.Study on the stability of coal water slurry using dispersion-stability analyzer[J].Journal of Fuel Chemistry and Technology,2008,36(5):524-529. |
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| Authors: | LI Peng-wei YANG Dong-jie LOU Hong-ming QIU Xue-qing |
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| Abstract: | Effect of modified lignin series and naphthalene series dispersants on the stability of coal water slurry (CWS) and sedimentation behavior of coal particles were investigated using Turbiscan Lab dispersion stability analyzer. The results indicate that the sedimentation behavior of coal particles of CWS belongs to differential sedimentation and there is a conglobation between coal particles in CWS preparation. Stability of CWS prepared with lignin series dispersants is better than that prepared with naphthalene series, and the height and mean sedimentation rate of clarifying zone is about 68% of that of FDN when the dosage of additives is 1.0%. The Turbiscan Lab dispersion stability analyzer can analyze the stability of CWS and also can be useful to investigate the stability mechanism of CWS. |
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| Keywords: | dispersants coal water slurry stability dispersion stability analyser |
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