Moisture removal mechanism of low-rank coal by hydrothermal dewatering: Physicochemical property analysis and DFT calculation
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- 作者：Junhong Wua ; Jie Wangb ; Jianzhong Liua ; jzliu@zju.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Yumeng Yanga ; Jun Chenga ; Zhihua Wanga ; Junhu Zhoua ; Kefa Cena
- 关键词：Low-rank coal ; Moisture content ; Hydrothermal dewatering ; Pore structure ; Oxygen functional groups ; Interaction energy
- 刊名：Fuel
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：187
- 期：Complete
- 页码：242-249
- 全文大小：1155 K
文摘
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The free and bound water in lignite were quantified before and after HTD.
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The removal of free water was associated with the collapse of macropore.
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The bound water was reduced because of the removal of oxygen functional groups.
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DFT calculation on the interaction energy between lignite and water were carried out.