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| 超声辐照前后添加剂在煤粒表面吸附特性研究 | |
| 引用本文： | 李永昕,赵天生,李保庆,陈诵英.超声辐照前后添加剂在煤粒表面吸附特性研究[J].煤炭转化,2000,23(3):40-43. |
| 作者姓名： | 李永昕 赵天生 李保庆 陈诵英 |
| 作者单位： | 1. 宁夏大学能源化工重点实验室,750021,银川 2. 中国科学院山西煤炭化学研究所,030001,太原 3. 浙江大学催化研究所,310027,杭州 |
| 基金项目： | 国家自然科学基金!( 5 99660 0 1)，宁夏自然科学基金!( QT990 0 1) |
| 摘 要： | 选用大同及神木煤样，考察了超声辐照前后添加剂在煤粒表面吸附特性的变化及其对水煤浆的表观粘度和静态稳定性的影响，在超声辐照强度为８０Ｗ／ｃｍ＾２和频率为２０ｋＨｚ的条件下，经超声辐照后，煤粒对添加剂的Ｌａｎｇｍｕｉｒ饱和吸附量明显增加。而饱和吸附量的增加与辐照引起的煤粒比表面积的增加密切相关，添加剂在煤粒表面的饱和吸附量是影响煤浆表观粘度的主要因素。采用ＸＰＳ对添加剂在煤粒表面吸附状态的表征结果表明 |
| 关 键 词： | 水煤浆 超声辐照 吸附特性 助剂 煤粒表面 |
| 修稿时间： | 2000-02-17 |
STUDY ON THE CHANGE OF ADSORPTION CHARACTERISTICS OF ADDITIVE BEFORE AND AFTER IRRADIATION |
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| Li Yongxin,Zhao Tiansheng,Li Baoqing,Chen Songying.STUDY ON THE CHANGE OF ADSORPTION CHARACTERISTICS OF ADDITIVE BEFORE AND AFTER IRRADIATION[J].Coal Conversion,2000,23(3):40-43. | |
| Authors: | Li Yongxin Zhao Tiansheng Li Baoqing Chen Songying |
| Abstract: | The change of adsorption characteristics of additive on the surface of coal particles before and after irradiation was investigated in this paper. The saturated adsorption of additive on the surface of coal particles increased after coal water slurry was irradiated by ultrasound. The increase in specific surface area of coal caused by ultrasonic irradiation was the principle factors for the change of saturated adsorption of additive on coal particles. The viscosity reducing capability of additive depends on the saturated adsorption of additive on coal particles.The thickness of absorbed layer of additive on the surface of coal particles was analyzed by XPS.After coal water slurry was irradiated by ultrasound under condition of 1% of additive, the absorbed layer of additive on the surface of coal particles became thin. The thickness of absorbed layer of additive is not a key factor affecting the static stability of coal water slurry. |
| Keywords: | coal water slurry ultrasonic irradiation adsorption characteristics |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
