当前位置: 中文主页 >> 研究成果 >> 论文成果
论文成果

Drying characteristic and kinetics of Huolinhe lignite in nitrogen and methane atmospheres

发表时间:2019-03-09
点击次数:
论文类型:
期刊论文
第一作者:
Jin, Lijun
通讯作者:
Hu, HQ (reprint author), Dalian Univ Technol, Sch Chem Engn, Inst Coal Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China.
合写作者:
Li, Yang,Lin, Lin,Zou, Liang,Hu, Haoquan
发表时间:
2015-07-15
发表刊物:
FUEL
收录刊物:
SCIE、EI、Scopus
文献类型:
J
卷号:
152
页面范围:
80-87
ISSN号:
0016-2361
关键字:
Lignite; Drying; Methane; Kinetics; Re-adsorption
摘要:
Lignite drying in methane atmosphere is a potential approach to utilize moisture in lignite as a feedstock for H-2 production via steam reforming of methane. In this paper, experiments on drying and moisture re-adsorption properties of Huolinhe lignite in nitrogen and methane were carried out in a fixed-bed apparatus and thermogravimetric analyzer to investigate the effect of drying temperature, particle size, moisture content, drying medium and sample weight on drying rates and drying dynamics. The drying kinetics and mechanism were studied by thermal analysis and thin layer models. The moisture of lignite decreases with increasing drying temperature, decreasing particle size and sample weight. The drying process follows random nucleation mechanism and Logarithmic model is the optimal thin layer model for drying process of Huolinhe lignite. The activation energy in methane is lower than that in nitrogen. Static adsorption method was used to analyze the equilibrium moisture contents (M-e) of dried coal sample. The results show that Me decreases with the increase of drying temperature and M-e of dried coal is lower than that of raw coal. The moisture desorption and re-adsorption isotherms are irreversible. (C) 2015 Elsevier Ltd. All rights reserved.
是否译文:

辽ICP备05001357号  地址:中国·辽宁省大连市甘井子区凌工路2号 邮编:116024 版权所有:大连理工大学


访问量:    最后更新时间:..