第18卷第1期 2018年2月
环境与能源
过程工程学报
The Chinese Jourmal of Process Engineering
Vol.18 No.1 Feb.2018
DOI: 10.12034/j.issn.1009-606X.217227
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，新强乌鲁木齐830046）
摘要：分别采用洗油(WO)、2-甲基禁(MN)和喹啉(QL)三种溶剂对漳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%，面段基碳和缓基碳含量分别增至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
中图分类号：Q814.2
文献标识码：A
文章编号：1009-606X(2018)01021807
Effectsof SwellingonStructure,CompositionandPyrolysisBehaviorofXinjiangNaomaohuCoal
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 &30046, China]
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
1前言
综合、梯级利用低阶煤资源是缓解我国煤炭粗放式利用及所引发的环境间题的有效途径.低阶煤有机化学组成丰富，可通过热解等脱挥发分技术提取煤自身含有的油、气产物，其中焦油产物可分离提取一些难以合成的芳香类化学品，也可通过加氢生产高附加值的液体燃料.这种综合利用方式充分考虑煤的结构和组成，不仅实现了煤的高效清洁利用，还创造了更多经济价值.
研究[-刀表明，低阶煤的化学组成和结构可为其高效利用提供重要的理论依据.很多文献采用热、酸和溶胀预处理等方式改变煤中元素配比、改善煤的结构，定向调控热解产物的比率和分布[8-16]，Yan等[8]用四氢溶胀云南褐煤，进行脱水和提质，用热重分析仪研究了各煤样的热解性能，随溶剂处理温度升高，煤样的交联程度增加，结构更紧凑，热解反应性下降。董鹏伟等[9发现内蒙古胜利褐煤分别经200和250℃水蒸汽和模拟烟气混合气热预处理后，热解焦油中的轻油和酚油含量分别较未处理煤样高59.5和42.5个百分点.Zhang等10研究了水热
收稿日期：2017-0424，修回日期：201706-13
基金项目：新疆维吾尔自治区重点实验室开放课题(编号：2016D03009)：国家自热科学基金资助项目(编号：21606187)：国家重点研发计划(编号：
2016YFF0102602)
作者简介：赵洲(1993-)，男，河南省驻马店市汝南县人，硕士研究生，煤化工专业，Tel:15199052585,E-mail:1097512828@q9.com：钟梅，通讯联系
人, Tel: 13669931725, E-mail: zhongmei0504@126.com.
引用格式：
赵渊，黄黎明，马风云，等，溶胀对新疆津毛溯煤样结构组成及热解性能的影响.过程工程学报，2018，18(1)：218-224.
re, Composition and Pyrolysis Behavior of Xinjiang Naomaohu Coal
Zhao Y, Huang L M, Ma F Y, et al. Effects of Swelling on Structure
(in Chinese). Chin. J. Process Eng., 2018, 18(1): 218224, DOI: 10.12034/j.issn.1009-606X.217227.
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