煤与生物油的成浆性能研究

汪永威; 王泽; 宋文立; 林伟刚; 吴文龙

煤与生物油的成浆性能研究

1.
中国科学院过程工程研究所多相复杂系统国家重点实验室, 北京 100190;
2.
河南省电力公司电力科学研究院, 河南郑州 450052

基金项目: 国家自然科学基金(51104137)。

详细信息

通讯作者:
汪永威(1981- ), Tel: 0371-67905479; E-mail: ywwang1218@163.com。

中图分类号: TK6
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- 被引次数: 0
出版历程
- 收稿日期: 2012-10-26
- 修回日期: 2012-12-17
- 刊出日期: 2013-05-30

Properties of coal and bio-oil slurry

1.
State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2.
Electric Power Research Institute of Henan Electric Power Corporation, Zhengzhou 450052, China

摘要

摘要: 利用不同煤种的煤和生物油制备了不同浓度的生物油煤浆,考察了生物油煤浆的成浆浓度、表观黏度、流变特性和稳定性。结果表明,生物油煤浆是具有一定屈服应力的非牛顿流体,其流变特性可用宾汉姆方程来描述;生物油煤浆的屈服应力和表观黏度都随着固体浓度的增加而增大;随着剪切速率的增加,生物油煤浆的表观黏度减小;四种煤中,无烟煤的成浆浓度最高,可达42%,其含碳量高达49%,相当于同种煤制成的74%的水煤浆含量。烟煤次之,褐煤最低;生物油与煤粉之间能够形成絮凝性的大分子网络结构,使得生物油煤浆存在屈服应力并能够保持良好的静态稳定性,4.0~5.0 d天没有软沉淀产生,数月没有硬沉淀产生。
- 生物油 /
- 生物油煤浆 /
- 流变特性 /
- 表观黏度 /
- 静态稳定性
Abstract: Coal bio-oil slurries (CBS) with different coal concentrations were prepared by mixing different type of coal and bio-oil. The apparent viscosity, rheological properties, maximum solid concentration and static stability of the prepared CBS were examined. The result shows that CBS are non-Newtonian fluid with a certain yield stress, and the rheological behavior of CBS can be described by the Bingham plastic fluid model. Both the apparent viscosity and the yield stress of CBS increase with increasing of solid concentrations. The apparent viscosity decreases with increasing of shear rates. The solid concentration of stable CBS prepared by Yangquan anthracite can reach as high as 42% without any additives, followed by bituminous coal and lignite. The flocculation network structure formed by coal particles in the bio-oil can keep good static stability of CBS for 4.0~5.0 days without formation of soft sediment, and for months without hard sediment.
- bio-oil /
- coal bio-oil slurry /
- rheological behavior /
- apparent viscosity /
- static stability

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