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浙江大学学报(工学版)
能源与机械工程     
水分随煤阶及水热变化的核磁共振研究
张旭,刘建忠,吴君宏,赵琛杰,周俊虎,岑可法
浙江大学 能源清洁利用国家重点实验室,浙江 杭州 310027
Change of moisture of different coal ranks and after hydrothermal dewatering reactions with nuclear magnetic resonance method
ZHANG Xu, LIU Jian zhong, WU Jun hong, ZHAO Chen jie, ZHOU Jun hu, CEN Ke fa
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
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摘要:

为了获得不同煤阶以及不同温度水热反应条件下煤中水分的变化规律,研究煤样核磁共振弛豫信号特性.研究发现,核磁共振(NMR)方法可以用于煤的水质量分数检测,能够检测出结晶水.水热反应可以有效地脱除煤中水分,反应温度越高,脱除效果越明显.随着煤阶的升高,煤中水分的横向弛豫时间变短,水分受束缚的程度变大;随着水热反应的温度升高,煤中水的质量分数大幅降低,横向弛豫时间变短,受束缚程度变大.
关键词: 

Abstract:

A nuclear magnetic resonance (NMR) spectrum detector was used to analyze the characteristics of its relaxation signals in order to get the change trend of moisture in different coal ranks and different hydrothermal dewatering reactions of temperatures. Results show that the NMR method can be used for the measurement of moisture content, and crystal water can be measured. Dewatering reactions is an effective way for coal drying, and the effect gets better as the temperature gets higher. As the coal rank gets higher, the transversal relaxation time of moisture becomes shorter and the bound force becomes larger. As the hydrothermal dewatering temperature gets higher, the moisture content becomes lower, the transversal relaxation time becomes shorter and the bound force becomes larger.

出版日期: 2016-03-31
:  TK 01  
基金资助:

 国家“973“重点基础研究发展规划资助项目(2010CB227001).

通讯作者: 刘建忠,男,教授,博导.ORCID:0000 0002 1673 2439.     E-mail: jzliu@zju.edu.cn
作者简介: 张旭(1990-),男,研究生,从事褐煤干燥提质以及煤中不同水分分布的研究.ORCID:0000 0002 2097 7500.E-mail:1250623780@qq.com
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引用本文:

张旭,刘建忠,吴君宏,赵琛杰,周俊虎,岑可法. 水分随煤阶及水热变化的核磁共振研究[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.01.018.

ZHANG Xu, LIU Jian zhong, WU Jun hong, ZHAO Chen jie, ZHOU Jun hu, CEN Ke fa. Change of moisture of different coal ranks and after hydrothermal dewatering reactions with nuclear magnetic resonance method. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.01.018.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.01.018        http://www.zjujournals.com/eng/CN/Y2016/V50/I1/123

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