Chemical structure and pyrolysis characteristics of demineralized Zhundong Coal

被引：16
|
作者：
Lin, Dan [1 ]
Qiu, Penghua [1 ]
Xie, Xing [1 ]
Zhao, Yan [1 ,2 ]
Chen, Gang [2 ]
Zeng, Le [2 ]
机构：
[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China
[2] Shenyang Acad Environm Sci, Res Ctr Solid Waste Pollut Control, Shenyang, Liaoning, Peoples R China
来源：
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS | 2018年 / 40卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Chemical structure; demineralization; FTIR; pyrolysis; Zhundong coal; ACID; REACTIVITY;
D O I：
10.1080/15567036.2017.1403504
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：
To investigate the effects of acid treatments on the chemical structure and pyrolysis behavior of coal, we examined the low-rank Zhundong coal pre-treated by four single acids (HCl, HF, H2SO4, HNO3) and a combined acid (HCI-HF-HCI). Our results indicated that the carboxylic and phenolic hydroxyl contents of the coal increased, while the aliphatic and aromatic hydrogen contents decreased after leaching. Nitric acid destroyed long aliphatic chains in coal, which caused the key pyrolysis stage to occur at lower temperature, the number of volatiles increased, and the pyrolysis rate improved.
引用
收藏
页码：282 / 287
页数：6
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