煤炭转化2013，Vol.36Issue(1)：28-33,6.
采用位移传感器测量煤的溶胀行为研究
SWELLING BEHAVIOR OF COAL IN SOLVENT BY A LINEAR VARIABLE DIFFERENTIAL TRANSFORMER DEFORMATION TRANSDUCER
陈垒1
作者信息
- 1. 中国科学院山西煤炭化学研究所煤转化国家重点实验室,030001太原;中国科学院研究生院,100039北京
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摘要
Abstract
According to the swelling measurement principle, combined with a linear variable differential transformer (LVDT) deformation transducer, an apparatus for measuring coal swelling in solvent was made. The swelling isothermals of LI and B3 in nine solvents (four non-polar solvents, four polar solvents and distilled water) were obtained by the linear variable differential transformer (LVDT) deformation transducer. The swelling rate curves were obtained by derivative swelling isotherms. Furthermore, the swelling behaviors of other four coal samples (two lignites and two bitumites) in N-methyl-2-pyrrolidone (NMP) were investigated. There is no significant swelling for LI in four non-polar solvents; but swelling in the four polar solvents significantly, especially in NMP having the maximum swelling ratio; and swelling in distilled water significantly. The swelling of B3 in four non-polar solvents except for n-hexane were significant, even the swelling ratio in toluene greater than in polar solvent acetonitrile. The swelling ratio in the polar solvent NMP was the maximum, showing a significant swelling in distilled water. At the initial time, the maximum swelling rate for two coals in non-polar solvents was shown in carbon disulfide. In all experimental solvents, the swelling in acetonitrile showed the maximum swelling rate. In NMP, three bitumite showed large swelling ratio and the swelling behaviors of three lignites were quite different. The swelling ratio of a lignite was significantly higher than that of the other two lignites and was equal to the bitumite.关键词
溶胀/位移传感器/溶胀速率Key words
swelling/LVDT/swelling rate分类
化学化工引用本文复制引用
陈垒..采用位移传感器测量煤的溶胀行为研究[J].煤炭转化,2013,36(1):28-33,6.
