Effect of swelling treatment by ionic liquid on the structure and pyrolysis performance of the direct coal liquefaction residue

HE Xiao-qiang; MO Wen-long; WANG Qiang; MA Feng-yun

Volume 47 Issue 12

Dec. 2019

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Article Navigation > Journal of Fuel Chemistry and Technology > 2019 > 47(12): 1417-1429

HE Xiao-qiang, MO Wen-long, WANG Qiang, MA Feng-yun. Effect of swelling treatment by ionic liquid on the structure and pyrolysis performance of the direct coal liquefaction residue[J]. Journal of Fuel Chemistry and Technology, 2019, 47(12): 1417-1429.

Citation:

HE Xiao-qiang, MO Wen-long, WANG Qiang, MA Feng-yun. Effect of swelling treatment by ionic liquid on the structure and pyrolysis performance of the direct coal liquefaction residue[J]. Journal of Fuel Chemistry and Technology, 2019, 47(12): 1417-1429.

Citation:

HE Xiao-qiang, MO Wen-long, WANG Qiang, MA Feng-yun. Effect of swelling treatment by ionic liquid on the structure and pyrolysis performance of the direct coal liquefaction residue[J]. Journal of Fuel Chemistry and Technology, 2019, 47(12): 1417-1429.

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Effect of swelling treatment by ionic liquid on the structure and pyrolysis performance of the direct coal liquefaction residue

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

Funds:

the National Science Foundation of China-Key Project of Xinjiang Joint Foundation U1503293

the National Natural Science Foundation of China 21276219

More Information

Corresponding author: MO Wen-long, Tel: 15022994903, E-mail: mowenlong@xju.edu.cn
Received Date: 2019-08-12
Rev Recd Date: 2019-09-17

Available Online: 2021-01-23

Publish Date: 2019-12-10

Abstract

Abstract

Direct coal liquefaction residue (DCLR) was swelled by four kinds of ionic liquids with the same anion and different organic chain length cations, [EMIM] [MeSO₄], [BMIM] [MeSO₄], [HMIM] [MeSO₄] and[OMIM] [MeSO₄], and the effects of swelling treatment with ionic liquids on swelling degree, surface morphology, functional group distribution, the main structure and pyrolysis performance of the direct coal liquefaction residue were analyzed by SEM, FT-IR and TG-DTG characterizations. The swelling results show that different chain length ionic liquid has different swelling degrees for the DCLR, and[HMIM] [MeSO₄] presents the best swelling effect with the swelling degree of 1.78. The FT-IR results indicate that the ionic liquid could destroy C-H bond in DCLR, leading to a change in relative content of aliphatic and aromatic compounds. The TG-DTG characterization demonstrates that the pyrolysis performance of the residue is greatly affected by the different organic chain length ionic liquid. And the[OMIM] [MeSO₄] ionic liquid is more favorable for the pyrolysis of the residue than others, with the weight loss rate of 47.5%. However, the pyrolysis performance of the residue is restrained by the[BMIM] [MeSO₄] ionic liquid, in which the weight loss rate is lower than that of DCLR (without swelling treatment). The pyrolysis kinetic data based on Coats-Redfern method show that the pyrolysis reaction for the direct coal liquid residue and the swelled ones at low temperature (180-480 ℃) obeys a second order law, while the third and fourth order law of reaction is more suitable for the residue pyrolysis at high temperature section (480-825 ℃). In addition, the activation energy of the pyrolysis process for the DCLR is altered obviously by swelling treatment with different organic length ionic liquid, the longer the chain length, the higher the pyrolysis activation energy.
- direct coal liquefaction residue,
- swelling treatment,
- ionic liquid,
- pyrolysis

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References(49)

References

[1]	KONG H, KONG X H, WANG J, ZHANG J. Thermodynamic analysis of a solar thermochemical cycle-based direct coal liquefaction system for oil production[J]. Energy, 2019, 179:1279-1287. doi: 10.1016/j.energy.2019.05.019
[2]	LV D M, WEI Y C, BAI Z Q, BAI J, KONG L X, GUO Z X, YAN J C, LI W. An approach for utilization of direct coal liquefaction residue:Blending with low-rank coal to prepare slurries for gasification[J]. Fuel, 2015, 145:143-150. doi: 10.1016/j.fuel.2014.12.075
[3]	马亚亚, 马凤云, 何芳, 孙志强, 莫文龙, 张晓静.空化洗油微波溶胀对新疆准东西沟煤直接液化性能影响及其动力学分析[J].煤炭学报, 2017, 42(10):2732-2740. http://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201710030.htm MA Ya-ya, MA Feng-yun, HE Fang, SUN Zhi-qiang, MO Wen-long, ZHANG Xiao-jing. Influence of microwave swelling with cavitated creosote oil on the direct liquefaction performance of xigou coal from xinjiang and its dynamics analysis[J]. J China Coal Soc, 2017, 42(10):2732-2740. http://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201710030.htm
[4]	SHU G P, ZHANG Y Z. Research on the maceral characteristics of Shenhua coal and efficient and directional direct coal liquefaction technology[J]. Int J Coal Sci Technol, 2014, 1(1):46-55. doi: 10.1007/s40789-014-0003-8
[5]	郭靖, 马凤云, 玛·伊·拜克诺夫, 周岐雄, 周剑林.溶胀对五彩湾煤低压直接液化性能的影响[J].煤炭学报, 2010, 35(7):1182-1187. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=mtxb201007023 GUO Jing, MA Feng-yun, TAЙKEHOB M И, ZHOU Qi-xiong ZHOU Jian-lin. Effect of solvent swelling of Wucaiwan coal on hydro-liquefaction properties at lower pressure[J]. J China Coal Soc, 2010, 35(7):1182-1187. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=mtxb201007023
[6]	廖静, 马凤云, 孙志强, 刘景梅, 刘月娥, 张晓静.空化洗油机械溶胀对新疆准东西沟煤液化性能的影响[J].煤炭学报, 2016, 41(5):1279-1286. http://d.old.wanfangdata.com.cn/Periodical/mtxb201605030 LIAO Jing, MA Feng-yun, SUN Zhi-qiang, LIU Jing-mei, LIU Yue-e, ZHANG Xiao-jing. Effect of swelling mechanically with cavitated creosote oil on liquefaction properties of Xigou coal from Xinjiang Zhundong[J]. J China Coal Soc, 2016, 41(5):1279-1286. http://d.old.wanfangdata.com.cn/Periodical/mtxb201605030
[7]	ZHANG J B, JIN L J, HU H Q, XUN Y X. Effect of composition in coal liquefaction residue on catalytic activity of the resultant carbon for methane decomposition[J]. Fuel, 2012, 96:462-468. doi: 10.1016/j.fuel.2011.12.075
[8]	SUN Z Q, MA F Y, LIU X J, WU H H, NIU C G, SU X T, LIU J M. Large-scale synthesis and catalysis of oleic acid-coated Fe₂O₃ for co-liquefaction of coal and petroleum vacuum residues[J]. Fuel Process Technol, 2015, 139:173-177. doi: 10.1016/j.fuproc.2015.07.025
[9]	BAI L, NIE Y, LI Y, DONG H F, ZHANG X P. Protic ionic liquids extract asphaltenes from direct coal liquefaction residue at room temperature[J]. Fuel Process Technol, 2013, 108:94-100. doi: 10.1016/j.fuproc.2012.04.008
[10]	XU L, TANG M C, DUAN L E, LIU B L, MA X X, ZHANG Y L, ARGYLE M D, FAN M H. Pyrolysis characteristics and kinetics of residue from China Shenhua industrial direct coal liquefaction plant[J]. Thermochim Acta, 2014, 589:1-10. doi: 10.1016/j.tca.2014.05.005
[11]	LI X H, XUE Y L, FENG J, YI Q, LI W Y, GUO X F, LIU K. Co-pyrolysis of lignite and Shendong coal direct liquefaction residue[J]. Fuel, 2015, 144:342-348. doi: 10.1016/j.fuel.2014.12.049
[12]	CUMMINGS J, SHAH K, ATKIN R, MOGHTADERI B. Physicochemical interactions of ionic liquids with coal; the viability of ionic liquids for pre-treatments in coal liquefaction[J]. Fuel, 2015, 143:244-252. doi: 10.1016/j.fuel.2014.11.042
[13]	SÖNMEZ Ö, GIRAY E S. An investigation of the effect of pre-swelling on the extraction yield of two different ranked Turkish coals[J]. Energy Sources Part A, 2011, 33(20):1901-1911. doi: 10.1080/15567030903503159
[14]	白金锋, 王勇, 胡浩权, 郭树才, 陈国华.溶胀对扎赉诺尔褐煤热解及液化性能的影响[J].煤炭转化, 2000, 23(4):50-54. doi: 10.3969/j.issn.1004-4248.2000.04.012 BAI Jin-feng, WANG Yong, HU Hao-quan, GUO Shu-cai, CHEN Guo-hua. Effect of swelling pretreatment on pyrolysis and liquefaction characteristics of Zalainuer lignite[J]. Coal Convers, 2000, 23(4):50-54. doi: 10.3969/j.issn.1004-4248.2000.04.012
[15]	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. http://d.old.wanfangdata.com.cn/Periodical/hgyj201801032 ZHAO Yuan, HUANG Li-ming, MA Feng-yun, ZHONG Mei. Effects of swelling on structure, composition and pyrolysis behavior of Xinjiang naomaohu coal[J]. Chin J Process Eng, 2018, 18(1):218-224. http://d.old.wanfangdata.com.cn/Periodical/hgyj201801032
[16]	刘耀鑫, 伯灵, 冯兆兴, 李晓鹤.溶胀预处理煤热解特性研究[J].煤炭技术, 2018, 37(4):304-306. http://d.old.wanfangdata.com.cn/Periodical/mtjs201804116 LIU Yao-xin, BAI Ling, FENG Zhao-xing, LI Xiao-he. Study on behavior of solvent swelling coal pyrolysis[J]. Coal Technol, 2018, 37(4):304-306. http://d.old.wanfangdata.com.cn/Periodical/mtjs201804116
[17]	SHAH K, ATKIN R, STANGER R, WALL T, MOGHTADERI B. Interactions between vitrinite and inertinite-rich coals and the ionic liquid-[bmim]Cl[J]. Fuel, 2014, 119:214-218. doi: 10.1016/j.fuel.2013.11.038
[18]	耿胜楚, 范天博, 刘云义.离子液体[BMIm]BF₄在神华煤溶胀预处理中的应用[J].煤炭转化, 2010, 33(2):35-38. doi: 10.3969/j.issn.1004-4248.2010.02.009 GENG Sheng-chu, FAN Tian-bo, LIU Yun-yi. Application of ionic liquid[Bmim]BF₄ in swelling pretreatment of ShenHua coal[J]. Coal Convers, 2010, 33(2):35-38. doi: 10.3969/j.issn.1004-4248.2010.02.009
[19]	CUI C B, JIANG S G, KOU L W, WANG L Y, ZHANG W Q, WU Z Y, WANG K, SHAO H. Effect of ionic liquids on the pyrolysis of coal[J]. Electron J Geotech Eng, 2016, 21:5203-5216. http://d.old.wanfangdata.com.cn/Periodical/mtzh201802002
[20]	HAYES R, WARR G G, ATKIN R. Structure and nanostructure in lonic liquids[J]. Chem Rev, 2015, 115(13):6357-6426. doi: 10.1021/cr500411q
[21]	TO T Q, SHAH K, TREMAIN P, SIMMONS B A, MOGHTADERI B, ATKIN R. Treatment of lignite and thermal coal with low cost amino acid based ionic liquid-water mixtures[J]. Fuel, 2017, 202:296-306. doi: 10.1016/j.fuel.2017.04.051
[22]	JI JIE, WANG D, SUO Z, XU Y, XU S F. Study on direct coal liquefaction residue influence on mechanical properties of flexible pavement[J]. Int J Pavement Res Technol, 2018, 11(4):355-362. doi: 10.1016/j.ijprt.2017.09.006
[23]	LV D M, BAI Z Q, WEI Y C, BAI J, KONG L X, GUO Z X, LI X, XU J L, LI W. Properties of direct coal liquefaction residue water slurry:Effect of treatment by low temperature pyrolysis[J]. Fuel, 2016, 179:135-140. doi: 10.1016/j.fuel.2016.03.081
[24]	KHARE S, DELL'AMICO M. An overview of conversion of residues from coal liquefaction processes[J]. Can J Chem Eng, 2013, 91(10):1660-1670. doi: 10.1002/cjce.21771
[25]	LIU X, ZHOU Z J, HU Q J, DAI Z H, WANG F C. Experimental study on co-gasification of coal liquefaction residue and petroleum coke[J]. Energy Fuels, 2011, 25(8):3377-3381. doi: 10.1021/ef200402z
[26]	YANG J L, WANG Z X, LIU Z Y, ZHANG Y Z. Novel use of residue from direct coal liquefaction process[J]. Energy Fuels, 2009, 23(10):4717-4722. doi: 10.1021/ef9000083
[27]	张德润, 罗蓉, 陈彧, 张胜振, 盛英.基于表面自由能的煤直接液化残渣改性沥青性能分析[J].中国公路学报, 2016, 29(1):22-28. doi: 10.3969/j.issn.1001-7372.2016.01.003 ZHANG De-run, LUO Rong, CHEN Yu, ZHANG Sheng-zhen, SHENG Ying. Performance analysis of DCLR-modified asphalt based on surfacefreer energy[J]. China J Highw Transp, 2016, 29(1):22-28. doi: 10.3969/j.issn.1001-7372.2016.01.003
[28]	LI J, YANG J L, LIU Z Y. Hydrogenation of heavy liquids from a direct coal liquefaction residue for improved oil yield[J]. Fuel Process Technol, 2009, 90(4):490-495. doi: 10.1016/j.fuproc.2009.01.013
[29]	ZHOU Y, XIAO N, QIU J S, SUN Y F, SUN T J, ZHAO Z B, ZHANG Y, TSUBAKI N. Preparation of carbon microfibers from coal liquefaction residue[J]. Fuel, 2008, 87(15/16):3474-3476. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=a21b069f0e3cec20c54efa108857fbf4
[30]	LI Y, ZHANG X P, LAI S Y, DONG H F, CHEN X L, WANG X L, NIE Y, SHENG Y, ZHANG S J. Ionic liquids to extract valuable components from direct coal liquefaction residues[J]. Fuel, 2012, 94:617-619. doi: 10.1016/j.fuel.2011.10.031
[31]	NIE Y, BAI L, DONG H F, ZHANG X P, ZHANG S J. Extraction of asphaltenes from direct coal liquefaction residue by dialkylphosphate ionic liquids[J]. Sep Sci Technol, 2012, 47(2):386-391. doi: 10.1080/01496395.2011.633957
[32]	NIE Y, BAI L, LI Y, DONG H F, ZHANG X P, ZHANG S J. Study on extraction asphaltenes from direct coal liquefaction residue with ionic liquids[J]. Ind Eng Chem Res, 2011, 50(17):10278-10282. doi: 10.1021/ie201187m
[33]	WANG L Y, XU Y L, JIANG S G, YU M, CHU T X, ZHANG W Q, WU Z Y, KOU L W. Imidazolium based ionic liquids affecting functional groups and oxidation properties of bituminous coal[J]. Saf Sci, 2012, 50(7):1528-1534. doi: 10.1016/j.ssci.2012.03.006
[34]	CUMMINGS J, KUNDU S, TREMAIN P, MOGHTADERI B, ATKIN R, SHAH K. Investigations into physicochemical changes in thermal coals during low-temperature ionic liquid treatment[J]. Energy Fuels, 2015, 29(11):7080-7088. doi: 10.1021/acs.energyfuels.5b01824
[35]	LEI Z P, HU Z Q, ZHANG H, HAN L N, SHUI H F, REN S B, WANG Z C, KANG S G, PAN C C. Pyrolysis of lignite following low temperature ionic liquid pretreatment[J]. Fuel, 2016, 166:124-129. doi: 10.1016/j.fuel.2015.10.059
[36]	SONG Y H, MA Q N, HE W J. Effect of extracted compositions of liquefaction residue on the structure and properties of the formed-coke[J]. MATEC Web Conf, 2016, 67, 06026. doi: 10.1051/matecconf/20166706026
[37]	ZHANG W Q, JIANG S G, WU Z Y, WANG K, SHAO H, QIN T, XI X, TIAN H B. Influence of imidazolium-based ionic liquids on coal oxidation[J]. Fuel, 2018, 217:529-535. doi: 10.1016/j.fuel.2017.12.056
[38]	SÖNMEZA Ö, YILDIZA Ö, ÇAKIR M Ö, GÖZMENA B, GIRAY E S. Influence of the addition of various ionic liquids on coal extraction with NMP[J]. Fuel, 2018, 212:12-18. doi: 10.1016/j.fuel.2017.10.017
[39]	CUMMINGS J, TREMAIN P, SHAH K, HELDT E, MOGHTADERI B, ATKIN R, KUNDU S, VUTHALURU H. Modification of lignites via low temperature ionic liquid treatment[J]. Fuel Process Technol, 2017, 155:51-58. doi: 10.1016/j.fuproc.2016.02.040
[40]	WU D, LIU G J, SUN R Y. Investigation on structural and thermodynamic characteristics of perhydrous bituminous coal by fourier transform infrared spectroscopy and thermogravimetry/mass spectrometry[J]. Energy Fuels, 2014, 28(5):3024-3035. doi: 10.1021/ef5003183
[41]	GENG W H, NAKAJIMA T, TAKANASHI H, OHKI A. Analysis of carboxyl group in coal and coal aromaticity by Fourier transform infrared (FT-IR) spectrometry[J]. Fuel, 2009, 88(1):139-144. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=07e793b64c55f0ea6fb1713c86c23c8f
[42]	LIN X C, WANG C H, IDETA K, MIYAWAKI J, NISHIYAMA Y, WANG Y G, YOON S, MOCHIDA I. Insights into the functional group transformation of a chinese brown coal during slow pyrolysis by combining various experiments[J]. Fuel, 2014, 118:257-264. doi: 10.1016/j.fuel.2013.10.081
[43]	WANG S Q, TANG Y G, SCHOBERT H H, GUO Y N, GAO W C, LU X K. FT-IR and simultaneous TG/MS/FT-IR study of Late Permian coals from Southern China[J]. J Anal Appl Pyrolysis, 2013, 100:75-80. doi: 10.1016/j.jaap.2012.11.021
[44]	QI X Y, WANG D M, XIN H H, QI G S. In situ FT-IR study of real-time changes of active groups guring oxygen-free reaction of coal[J]. Energy Fuels, 2013, 27(6):3130-3136. doi: 10.1021/ef400534f
[45]	WU D, LIU G J, SUN R Y, FAN X. Investigation of structural characteristics of thermally metamorphosed coal by FT-IR spectroscopy and X-ray diffraction[J]. Energy Fuels, 2013, 27(10):5823-5830. doi: 10.1021/ef401276h
[46]	马亚亚, 马凤云, 莫文龙, 樊星.酸洗脱灰处理对新疆和丰低阶煤结构和萃取性能的影响[J].燃料化学学报, 2019, 47(6):649-660. doi: 10.3969/j.issn.0253-2409.2019.06.002 MA Ya-ya, MA Feng-yun, MO Wen-long, FAN Xing. Influence of acid treatment on the structure and extraction performance of Xinjiang Hefeng low-rank coal[J]. J Fuel Chem Technol, 2019, 47(6):649-660. doi: 10.3969/j.issn.0253-2409.2019.06.002
[47]	周俊虎, 方磊, 程军, 刘建忠, 岑可法.神华煤液化残渣的热解特性[J].燃烧科学与技术, 2006, 12(4):295-299. doi: 10.3321/j.issn:1006-8740.2006.04.002 ZHOU Jun-hu, FANG Lei, CHENG Jun, LIU Jian-zhong, CEN Ke-fa. Pyrolysis properties of Shenhua coal liquefaction residue[J]. J Combust Sci Technol, 2006, 12(4):295-299. doi: 10.3321/j.issn:1006-8740.2006.04.002
[48]	ZHU P, LUO A Q, ZHANG F, LEI Z P, ZHANG J L, ZHANG J S. Effects of extractable compounds on the structure and pyrolysis behaviours of two Xinjiang coal[J]. J Anal Appl Pyrolysis, 2018, 133:128-135. doi: 10.1016/j.jaap.2018.04.012
[49]	畅志兵, 初茉, 孙任晖, 杨小敏, 吕海龙.煤直接液化残渣与褐煤共热解动力学研究[J].煤炭科学技术, 2015, 43(3):138-141+39. http://d.old.wanfangdata.com.cn/Periodical/mtkxjs201503032 CHANG Zhi-bing, CHU Mo, SUN Ren-hui, YANG Xiao-min, LV Hai-long. Study on co-pyrolysis kinetics of coal direct liquefaction residue and lignite[J]. Coal Sci Technol, 2015, 43(3):138-141+39. http://d.old.wanfangdata.com.cn/Periodical/mtkxjs201503032