溶胀对新疆淖毛湖煤样结构组成及热解性能的影响

doi:10.12034/j.issn.1009-606X.217227

过程工程学报 ›› 2018, Vol. 18 ›› Issue (1): 218-224.DOI: 10.12034/j.issn.1009-606X.217227

• 环境与能源 • 上一篇

溶胀对新疆淖毛湖煤样结构组成及热解性能的影响

赵渊，黄黎明，马风云，钟梅^*

新疆大学化学与化工学院，煤炭清洁转化与化工过程自治区重点实验室，新疆乌鲁木齐 830046

收稿日期:2017-04-24 修回日期:2017-06-13 出版日期:2018-02-22 发布日期:2018-01-29
通讯作者: 钟梅 zhongmei0504@126.com
基金资助:
新疆维吾尔自治区重点实验室开放课题

Effects of Swelling on Structure, Composition and Pyrolysis Behavior of Xinjiang Naomaohu Coal

Yuan ZHAO, Liming HUANG, Fengyun MA, Mei ZHONG^*

Key Laboratory of Coal Clean Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, Xinjiang 830046, China

Received:2017-04-24 Revised:2017-06-13 Online:2018-02-22 Published:2018-01-29
Contact: ZHONG Mei zhongmei0504@126.com

摘要/Abstract

摘要： 分别采用洗油(WO)、2-甲基萘(MN)和喹啉(QL)三种溶剂对淖毛湖煤样进行溶胀处理，研究溶胀作用对煤样物理和化学结构的影响. 结果表明，与原煤相比，溶胀煤样的挥发分含量和C元素含量不同程度降低，其中C含量降幅明显，约为8.63%，而H和O含量增加. 用WO, MN和QL溶胀的煤样的亚甲基碳含量分别降低6.37%, 5.74%和7.55%，而羧基碳和羰基碳含量分别增至10.60%, 11.40%和11.10%. 溶胀煤样的比表面积比原煤降低30%以上，平均孔径不同程度增加. 溶胀后煤样结构重排，表面能下降. 溶胀煤样的热解焦油产率和气产率均增加，H2和CO产率增幅明显. 溶胀抑制了交联反应，导致CO2产率降低.

关键词: 溶胀, 结构, 表面能, 焦油产率, 交联反应

Abstract: Washing oil (WO), 2-methyinaphthalene (MN) and quinolone (QL) were selected as the swelling agent to treat Naomaohu coal sample. The effects of swelling on the physical and chemical structure of coal sample were study. The results showed that comparison with raw coal, volatile and carbon contents of swelling coal samples decreased, especially the carbon content decreased significantly, approximately 8.63%, while H and O contents indicated an increasing tendency. Methylene carbon in samples swelling using WO, MN and QL decreased 6.37%, 5.74% and 7.55% respectively, but carbonyl and carboxyl carbon increased to 10.60%, 11.40% and 11.10%. After swelling, over 30% of specific surface area was reduced, but their average pore size were enlarged. The decrease of surface free energy could be attributed to the arrangement of coal structure via swelling. Pyrolysis tar and gas yields of swelling coal were higher than raw coal, especially for H2 and CO yields. However, the inhibition of crosslinking reaction led to lower the CO2 yield.

Key words: swelling, structure, surface energy, tar yield, crosslinking reaction

赵渊黄黎明马风云钟梅. 溶胀对新疆淖毛湖煤样结构组成及热解性能的影响[J]. 过程工程学报, 2018, 18(1): 218-224.

Yuan ZHAO Liming HUANG Fengyun MA Mei ZHONG. Effects of Swelling on Structure, Composition and Pyrolysis Behavior of Xinjiang Naomaohu Coal[J]. Chin. J. Process Eng., 2018, 18(1): 218-224.

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溶胀对新疆淖毛湖煤样结构组成及热解性能的影响

Effects of Swelling on Structure, Composition and Pyrolysis Behavior of Xinjiang Naomaohu Coal

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