Effect of hydrothermal dewatering on physicochemical properties and moisture re-adsorption capacity of a lignite

被引：3
|
作者：
Xu, Dongfang [1 ]
Zhu, Shuquan [1 ]
Jia, Mengyang [1 ]
Zhu, Zhibo [1 ]
机构：
[1] China Univ Min & Technol, Sch Chem & Environm Engn, Beijing, Peoples R China
来源：
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS | 2016年 / 38卷 / 24期
关键词：
Hydrothermal dewatering; moisture re-adsorption; molecular composition; pore structure; RANK COALS;
D O I：
10.1080/15567036.2016.1194915
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The effects of hydrothermal dewatering (HTD) on physicochemical properties and moisture re-adsorption capacity of Zhaotong lignite were analyzed. The results showed that HTD could improve the quality of lignite. During the process of HTD, oxygen-containing functional groups decomposed. Both high temperature and pressure favor the formation of large pore volume and small pore diameter. Treated temperature was the key factor governing the moisture re-adsorption capacity of lignite. The moisture re-adsorption degree decreased from 12.47% to 6.13% when the temperature varied from 200 to 300 degrees C. While, the pressure had weaker effect on the degree of moisture re-adsorption.
引用
收藏
页码：3633 / 3638
页数：6
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