Effects of active hydrogen and oxygen on organic sulfur transformation behavior during pyrolysis of high sulfur coal: A review

ZHANG Wen-jing; CHENG Ya-nan; KONG Jiao; WANG Mei-jun; CHANG Li-ping; BAO Wei-ren

doi:10.1016/S1872-5813(21)60198-6

Volume 50 Issue 6

Jun. 2022

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Article Navigation > Journal of Fuel Chemistry and Technology > 2022 > 50(6): 652-663

ZHANG Wen-jing, CHENG Ya-nan, KONG Jiao, WANG Mei-jun, CHANG Li-ping, BAO Wei-ren. Effects of active hydrogen and oxygen on organic sulfur transformation behavior during pyrolysis of high sulfur coal: A review[J]. Journal of Fuel Chemistry and Technology, 2022, 50(6): 652-663. doi: 10.1016/S1872-5813(21)60198-6

Citation:

ZHANG Wen-jing, CHENG Ya-nan, KONG Jiao, WANG Mei-jun, CHANG Li-ping, BAO Wei-ren. Effects of active hydrogen and oxygen on organic sulfur transformation behavior during pyrolysis of high sulfur coal: A review[J]. Journal of Fuel Chemistry and Technology, 2022, 50(6): 652-663. doi: 10.1016/S1872-5813(21)60198-6

Citation:

ZHANG Wen-jing, CHENG Ya-nan, KONG Jiao, WANG Mei-jun, CHANG Li-ping, BAO Wei-ren. Effects of active hydrogen and oxygen on organic sulfur transformation behavior during pyrolysis of high sulfur coal: A review[J]. Journal of Fuel Chemistry and Technology, 2022, 50(6): 652-663. doi: 10.1016/S1872-5813(21)60198-6

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Effects of active hydrogen and oxygen on organic sulfur transformation behavior during pyrolysis of high sulfur coal: A review

doi: 10.1016/S1872-5813(21)60198-6

ZHANG Wen-jing^{1, 2
,},
CHENG Ya-nan^{1, 2},
KONG Jiao^{1, 2
,
,},
WANG Mei-jun^{1, 2},
CHANG Li-ping^{1, 2
,
,},
BAO Wei-ren^{1, 2}

1.
State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China
2.
Key Laboratory of Coal Science and Technology, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China

Funds: The project was supported by the National Natural Science Foundation of China (21808152, 21878208, U1910201).

Received Date: 2021-12-01
Accepted Date: 2022-01-29
Rev Recd Date: 2022-01-16

Available Online: 2022-02-16

Publish Date: 2022-06-25

Abstract

Abstract

With consumption of high quality coal resources, clean and efficient conversion of high sulfur coal has attracted much attention, and especially the regulation of organic sulfur in high sulfur coking coal is very important. During pyrolysis transformation of organic sulfur in coal begins with cleavage of C-S bonds in the macromolecular structure of coal and stabilization of sulfur-containing free radicals, and active hydrogen/oxygen is an important factor affecting the transformation behavior of organic sulfur. It is found that, during coal pyrolysis under hydrogen-enriched or oxygen-enriched atmosphere or co-pyrolysis with biomass or oxygen-containing organic matter, the active hydrogen/oxygen in the system can weaken C−S bonds of organic sulfur, and promote their cleavage, timely combination with the generated sulfur-containing free radicals. This can promote sulfur in coal transform to the gas phase and reduce the secondary reaction of sulfur-containing free radicals with coal matrix. At the same time, during co-pyrolysis of high volatile and high sulfur coals, the relatively abundant active hydrogen/oxygen in volatile will also affect the organic sulfur transformation behavior in high sulfur coal, and reduce the sulfur content in coke, which provides a theoretical basis for directional regulation of sulfur in coal.
- coal pyrolysis,
- organic sulfur transformation,
- C−S bonds,
- sulfur-containing free radicals,
- active hydrogen/oxygen

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References(64)

References

[1]	SHEN Y F, HU Y F, WANG M J, BAO W R, CHANG L P, XIE K H. Speciation and thermal transformation of sulfur forms in high-sulfur coal and its utilization in coal-blending coking process: A review[J]. Chin J Chem Eng,2021,35(7):70−82.
[2]	刘振宇. 重质有机资源热解过程中的自由基化学[J]. 北京化工大学学报(自然科学版),2018,45(5):8−24. LIU Zhen-yu. Radical chemistry in the pyrolysis of heavy organics[J]. J Beijing Univ Chem Technol (Natural Science Edition),2018,45(5):8−24.
[3]	刘振宇. 煤化学的前沿与挑战: 结构与反应[J]. 中国科学: 化学,2014,44(9):1431−1438. LIU Zhen-yu. Advancement in coal chemistry: structure and reactivity[J]. Sci China: Chem,2014,44(9):1431−1438.
[4]	ZHANG X R, LIU Z Y, CHEN Z Z, XU T, LIU Q Y. Bond cleavage and reactive radical intermediates in heavy tar thermal cracking[J]. Fuel,2018,233:420−426. doi: 10.1016/j.fuel.2018.06.036
[5]	王美君. 典型高硫煤热解过程中硫、氮的变迁及其交互作用机制[D]. 太原: 太原理工大学, 2013. WANG Mei-jun. Transformation and interaction of sulfur and nitrogen during pyrolysis of typical high-sulfur coals[D]. Taiyuan: Taiyuan University of Technology, 2013.
[6]	魏强, 唐跃刚, 李薇薇, 赵巧静, 贺鑫, 李龙, 赵正福. 煤中有机硫结构研究进展[J]. 煤炭学报,2015,40(8):1911−1923. WEI Qiang, TANG Yue-gang, LI Wei-wei, ZHAO Qiao-jing, HE Xin, LI Long, ZHAO Zheng-fu. Research advances on organic sulfur structures in coal[J]. J China Coal Soc,2015,40(8):1911−1923.
[7]	CALKINS W H. The chemical forms of sulfur in coal: A review[J]. Fuel,1994,73(4):475−484. doi: 10.1016/0016-2361(94)90028-0
[8]	HOU J L, MA Y, LI S Y, SHI J, HE L, LI J. Transformation of sulfur and nitrogen during Shenmu coal pyrolysis[J]. Fuel,2018,231:134−144. doi: 10.1016/j.fuel.2018.05.046
[9]	WANG M J, LIU L J, WANG J C, CHANG L P, WANG H, HU Y F. Sulfur K-edge XANES study of sulfur transformation during pyrolysis of four coals with different ranks[J]. Fuel Process Technol,2015,131:262−269. doi: 10.1016/j.fuproc.2014.10.038
[10]	杨暖暖. 高硫煤热解过程中硫释放与迁移的研究[D]. 呼和浩特: 内蒙古大学, 2018. YANG Nuan-nuan. Sulfur release and transformation during pyrolysis of high sulfur coals[D]. Huhehaote: Inner Mongolia University, 2018.
[11]	YAN J D, YANG J L, LIU Z Y. SH radical: the key intermediate in sulfur transformation during thermal processing of coal[J]. Environ Sci Technol,2005,39(13):5043−5051. doi: 10.1021/es048398c
[12]	陈皓侃, 李保庆, 杨继礼, 尉迟唯, 李文, 孙成功. 兖州高硫煤的加氢热解脱硫及脱硫动力学[J]. 燃料化学学报.,1997,25(2):114−118. CHEN Hao-kan, LI Bao-qing, YANG Ji-li, YU Chi-wei, LI Wen, SUN Cheng-gong. Study of desulfurization and its kinetics in hydropyrolysis of Yanzhou bituminous coal[J]. J Fuel Chem Technol,1997,25(2):114−118.
[13]	ATTAR A, MESSENGER L. The desulfurization of organic sulfur and the transformations of organic sulfur functional groups in coal pyrolysis[J]. Energy Fuels,1983,20(1/2):53−62.
[14]	ZHANG D K, YANI S. Sulphur transformation during pyrolysis of an Australian lignite[J]. Proc Combust Inst,2011,33(2):1747−1753. doi: 10.1016/j.proci.2010.07.074
[15]	WANG H J, FENG Y H, ZHANG X X, LIN W, ZHAO Y L. Study of coal hydropyrolysis and desulfurization by ReaxFF molecular dynamics simulation[J]. Fuel,2015,145:241−248. doi: 10.1016/j.fuel.2014.12.074
[16]	LIANG Y H, WANG F, ZHANG H, WANG J P, LI Y Y, LI G Y. A ReaxFF molecular dynamics study on the mechanism of organic sulfur transformation in the hydropyrolysis process of lignite[J]. Fuel Process Technol,2016,147:32−40. doi: 10.1016/j.fuproc.2015.09.007
[17]	ZHANG Z J, GUO L T, ZHANG H Y, ZHAN J H. Comparing product distribution and desulfurization during direct pyrolysis and hydropyrolysis of Longkou oil shale kerogen using reactive MD simulations[J]. Int J Hydrogen Energy,2019,44(47):25335−25346. doi: 10.1016/j.ijhydene.2019.08.036
[18]	ZHONG Q F, ZHANG Y, SHABNAM S, XIAO J, VAN DUIN A C T, MATHEWS J P. Reductive gaseous (H₂/NH₃) desulfurization and gasification of high-sulfur petroleum coke via reactive force field molecular dynamics simulations[J]. Energy Fuels,2019,33(9):8065−8075. doi: 10.1021/acs.energyfuels.9b01425
[19]	ZHOU Q, HU H Q, LIU Q R, ZHU S W, ZHAO R. Effect of atmosphere on evolution of sulfur-containing gases during coal pyrolysis[J]. Energy Fuels,2005,19:892−897. doi: 10.1021/ef049773p
[20]	CHEN H K, LI B Q, YANG J I, ZHANG B J. Transformation of sulfur during pyrolysis and hydropyrolysis of coal[J]. Fuel,1998,77(6):487−493. doi: 10.1016/S0016-2361(97)00275-5
[21]	陈皓侃, 李保庆, 张碧江. 高硫煤加氢热解脱硫的研究Ⅰ. 热解与加氢热解脱硫的对比[J]. 燃料化学学报.,1997,25(4):347−352. CHEN Hao-kan, LI Bao-qing, ZHANG Bi-jiang. Investigations on desulfurization of high sulfur coal during hydropyrolysis Ⅰ. Comparison of desulfurization between pyrolysis and hydropyrolysis[J]. J Fuel Chem Technol,1997,25(4):347−352.
[22]	周强. 煤的热解行为及硫的脱除[D]. 大连: 大连理工大学, 2004. ZHOU Qiang. Behavior of coal and sulfur removal during pyrolysis[D]. Dalian: Dalian University of Technology, 2004.
[23]	么秋香, 杜美利, 杨喜圆. 甲烷和氢气气氛下高有机硫煤的热解脱硫研究[J]. 煤炭工程,2013,45(5):105−108. YAO Qiu-xiang, DU Mei-li, YANG Xi-yuan. Study on pyrolysis desulphurization of high organic sulfur coal under methane and hydrogen atmospheres[J]. Coal Eng,2013,45(5):105−108.
[24]	王光辉, 梁玉河, TRASS O. 高硫煤与焦炉净煤气共热解脱硫的研究[J]. 武汉科技大学学报(自然科学版),2001,24(1):31−33. WANG Guang-hui, LIANG Yu-he, OLEV Trass. Study on the mechanism of copyrolysis desulfurization of coal with coke-oven gas[J]. J of Wuhan Univ Sci Technol (Nat Sci Ed),2001,24(1):31−33.
[25]	WANG M, DU Q, LI Y P, XU J J, GAO J M, WANG H. Effect of steam on the transformation of sulfur during demineralized coal pyrolysis[J]. J Anal Appl Pyrolysis,2019,140:161−169. doi: 10.1016/j.jaap.2019.03.011
[26]	高梅杉, 张建民, 罗鸣. 煤与天然气共热解过程中硫的析出规律研究[J]. 上海理工大学学报,2006,28(4):376−380. doi: 10.3969/j.issn.1007-6735.2006.04.018 GAO Mei-shan, ZHANG Jian-min, LUO Ming. Research progress of coal pyrolysis desulfurization in reductive atmosphere[J]. J Univ Shanghai Sci Technol,2006,28(4):376−380. doi: 10.3969/j.issn.1007-6735.2006.04.018
[27]	WANG M, GAO J, XU J, DU Q, ZHANG Y. Effect of H₂O on the transformation of sulfur during demineralized coal pyrolysis: molecular dynamics simulation using ReaxFF[J]. Energy Fuels,2021,35(3):2379−2390. doi: 10.1021/acs.energyfuels.0c02916
[28]	WEI R, REN L, ZHU T. The evolution characteristic of sulfur-containing gases during coal thermal conversion[J]. J Energy Inst,2020,93(4):1503−1510. doi: 10.1016/j.joei.2020.01.012
[29]	GUO H Q, WU H, YANG N N, FU Q, LIU F R, ZHANG H, HU R S, HU Y F. XAS combined with TG–DTG study on synergic effect on sulfur transformation during co-pyrolysis of sawdust and lignite[J]. J Therm Anal Calorim,2018,135(4):2475−2480.
[30]	GUO H Q, FU Q, ZHANG L, LIU F R, HU Y F, ZHANG H, HU R S. Sulfur K-edge XAS study of sulfur transformation behavior during pyrolysis and co-pyrolysis of biomass and coals under different atmospheres[J]. Fuel,2018,234:1322−1327. doi: 10.1016/j.fuel.2018.08.014
[31]	李佳佳, 李梅, 程雪云, 孙功成, 金权, 徐荣声. 高硫煤与生物质共热解时有机硫的迁移规律[J]. 煤炭转化,2019,42(5):18−26. LI Jia-jia, LI Mei, CHENG Xue-yun, SUN Gong-cheng, JIN Quan, XU Rong-sheng. Characteristics of organic sulfur migration during co-pyrolysis of coal / biomass blends[J]. Coal Convers,2019,42(5):18−26.
[32]	VUTHALURU H B. Investigations into the pyrolytic behaviour of coal/biomass blends using thermogravimetric analysis[J]. Bioresour Technol,2003,92(2):187−195.
[33]	HE W J, YIN G J, ZHAO Y B, ZHANG L J, XU S Y, HUANG T T, CHANG L, LU H X. Interactions between free radicals during co-pyrolysis of lignite and biomass[J]. Fuel,2021,302:121098. doi: 10.1016/j.fuel.2021.121098
[34]	WANG M J, TIAN J L, G R D, CHANG L I, XIE K C. Interactions between corncob and lignite during temperature-programmed co-pyrolysis[J]. Fuel,2015,142:102−108. doi: 10.1016/j.fuel.2014.11.003
[35]	武宏香, 李海滨, 赵增立. 煤与生物质热重分析及动力学研究[J]. 燃料化学学报,2009,37(5):538−545. doi: 10.3969/j.issn.0253-2409.2009.05.005 WU Hong-xiang, LI Hai-bin, ZHAO Zeng-li. Thermo gravimetric analysis and pyrolytic kinetic study on coal / biomass blends[J]. J Fuel Chem Technol,2009,37(5):538−545. doi: 10.3969/j.issn.0253-2409.2009.05.005
[36]	何玉远. 煤与生物质共热解共气化过程中硫、氮的迁移规律研究[D]. 郑州: 郑州大学, 2018. HE Yu-yuan. Research on the transformation of sulfur and nitrogen during co-pyrolysis and co-gasification between coal and biomass[D]. Zhengzhou: Zhengzhou University, 2018.
[37]	周仕学, 郭俊利, 刘夕华, 姜海涛. 高硫强粘结性煤与生物质共热解脱硫脱氮的研究[J]. 山东科技大学学报,2000,19(2):33−37. ZHOU Shi-xue, GUO Jun-li, LIU Xi-hua, JIANG Hai-tao. Research on the remove of sulfur and nitrogen during co-pyrolysis of high sulfur and strong caking coal with biomass[J]. J Shandong Univ Sci Technol,2000,19(2):33−37.
[38]	么秋香, 杜美利, 张锦仁. 高硫煤与生物质共热解脱有机硫研究[J]. 煤炭转化,2014,37(3):15−19. doi: 10.3969/j.issn.1004-4248.2014.03.004 YAO Qiu-xiang, DU Mei-li, ZHANG Jin-ren. Organic sulfur removel from high sulfur coal during co-pyrolysis with biomass[J]. Coal Convers,2014,37(3):15−19. doi: 10.3969/j.issn.1004-4248.2014.03.004
[39]	BLESA M J, MIRANDA J L, MOLINER R, IZQUIERDO M T, PALACIOS J M. Low-temperature co-pyrolysis of a low-rank coal and biomass to prepare smokeless fuel briquettes[J]. J Anal Appl Pyrolysis,2003,70(2):665−677. doi: 10.1016/S0165-2370(03)00047-0
[40]	LIU F R, XIE L L, GUO H Q, XUE M, HU R S, HU H Q. Sulfur release and transformation behaviors of sulfur-containing model compounds during pyrolysis under oxidative atmosphere[J]. Fuel,2014,115:596−599. doi: 10.1016/j.fuel.2013.07.038
[41]	ZHANG F L, GUO H Q, LIU Y, LIU F R, HU R S. Theoretical study on desulfurization mechanisms of a coal-based model compound 2-methylthiophene during pyrolysis under inert and oxidative atmospheres[J]. Fuel,2019,257:116028. doi: 10.1016/j.fuel.2019.116028
[42]	YANG N N, GUO H Q, LIU F R, ZHANG H, HU Y F, HU R S. Effects of atmospheres on sulfur release and its transformation behavior during coal thermolysis[J]. Fuel,2018,215:446−453. doi: 10.1016/j.fuel.2017.11.099
[43]	LI G Y, WANG F, WANG J P, LI Y Y, LI A Q, LIANG Y H. ReaxFF and DFT study on the sulfur transformation mechanism during the oxidation process of lignite[J]. Fuel,2016,181:238−247. doi: 10.1016/j.fuel.2016.04.068
[44]	CHEN S Y, DING J X, LI G Y, WANG J P, TIAN Y, LIANG Y H. Theoretical study of the formation mechanism of sulfur-containing gases in the CO₂ gasification of lignite[J]. Fuel,2019,242:398−407. doi: 10.1016/j.fuel.2019.01.010
[45]	王之正, 王利斌, 裴贤丰, 王岩, 白效言. 高硫煤热解脱硫技术研究现状[J]. 洁净煤技术,2014,20(2):76−79. WANG Zhi-zhen, WANG Li-bin, PEI Xian-fen, WANG Yan, BAI Xiao-yan. Desulfurization of high-sulfur coal through pyrolysis[J]. Clean Coal Technol,2014,20(2):76−79.
[46]	郭慧卿. 霍州煤热解预脱硫及其热解气体分析[D]. 太原: 太原理工大学, 2007. GUO Hui-qing. Pre-desulfurization of Huozhou coal by pyrolysis and the analysis of pyrolysis gases[D]. Taiyuan: Taiyuan University of Technology, 2007.
[47]	QI Y Q, LI W, CHEN H K, LI B Q. Sulfur release from coal in fluidized-bed reactor through pyrolysis and partial oxidation with low concentration of oxygen[J]. Fuel,2004,83(16):2189−2194. doi: 10.1016/j.fuel.2004.06.009
[48]	QI Y Q, LI W, CHEN H K, LI B Q. Desulfurization of coal through pyrolysis in a fluidized-bed reactor under nitrogen and 0.6% O₂-N₂ atmosphere[J]. Fuel,2004,83(6):705−712. doi: 10.1016/j.fuel.2003.09.021
[49]	WANG X L, GUO H Q, LIU F R, HU R S, WANG M J. Effects of CO₂ on sulfur removal and its release behavior during coal pyrolysis[J]. Fuel,2016,165:484−489. doi: 10.1016/j.fuel.2015.10.047
[50]	DUAN L B, ZHAO C S, ZHOU W, QU C R, CHEN X P. Investigation on coal pyrolysis in CO₂ atmosphere[J]. Energy Fuels,2009,23(4):3592−3599.
[51]	郭慧卿, 付琦, 王鑫龙, 刘粉荣, 胡瑞生, 张浩. CO₂气氛对煤热解过程中硫逸出的影响[J]. 燃料化学学报.,2017,45(5):523−528. GUO Hui-qing, FU Qi, WANG Xin-long, LIU Fen-rong, HU Rui-sheng, ZHANG Hao. Effect of CO₂ atmosphere on sulfur release during coal pyrolysis[J]. J Fuel Chem Technol,2017,45(5):523−528.
[52]	LIU F R, LI B Q, LI W, BAI Z Q, YPERMAN J. Py-MS study of sulfur behavior during pyrolysis of high-sulfur coals under different atmospheres[J]. Fuel Process Technol,2010,91(11):1486−1490. doi: 10.1016/j.fuproc.2010.05.025
[53]	刘粉荣, 李文, 李保庆, 白宗庆. 常压程序升温还原—质谱法研究遵义煤在热解过程中硫的变迁行为[J]. 燃料化学学报,2008,36(1):6−9. doi: 10.3969/j.issn.0253-2409.2008.01.002 LIU Fen-rong, LI Wen, LI Bao-qing, BAI Zong-qing. Sulfur transformation during pyrolysis of Zunyi coal by atmosphere pressure-temperature programmed reduction-mass spectrum[J]. J Fuel Chem Technol,2008,36(1):6−9. doi: 10.3969/j.issn.0253-2409.2008.01.002
[54]	刘粉荣, 李文, 李保庆, 白宗庆, YPERMAN J. AP-TPR-MS法考察六枝煤固定床热解过程中的硫变迁行为[J]. 燃料化学学报,2009,37(2):150−155. doi: 10.3969/j.issn.0253-2409.2009.02.005 LIU Fen-rong, LI Wen, LI Bao-qing, BAI Zong-qing, YPERMAN J. Sulfur transformation during pyrolysis of Liuzhi coal in fixed bed reactor by AP-TPR-MS[J]. J Fuel Chem Technol,2009,37(2):150−155. doi: 10.3969/j.issn.0253-2409.2009.02.005
[55]	FRIGGE L, ELSERAFI G, STRÖHLE J, EPPLE B. Sulfur and chlorine gas species formation during coal pyrolysis in nitrogen and carbon dioxide atmosphere[J]. Energy Fuels,2016,30(9):7713−7720. doi: 10.1021/acs.energyfuels.6b01080
[56]	YANG N N, GUO H Q, LEI Y Q, ZHANG Y B, WANG M J, LIU F R, HU R S, HU Y F. XAS combined with Py-GC study on the effects of temperatures and atmospheres on sulfur release and its transformation behavior during coal pyrolysis[J]. Fuel,2019,250:373−380. doi: 10.1016/j.fuel.2019.04.010
[57]	XU L, YANG J L, LI Y M, YU L Z. Effects of organic gaseous additives on desulfurization of coal during pyrolysis[J]. Energy Sources,2003,25(10):1033−1042. doi: 10.1080/00908310390232488
[58]	徐龙, 杨建丽, 李允梅, 刘振宇. 气相添加物对兖州煤燃前预脱硫的影响研究[J]. 燃料化学学报,2002,30(2):175−177. doi: 10.3969/j.issn.0253-2409.2002.02.016 XU Long, YANG Jian-li, LI Yun-mei, LIU Zhen-yu. Influence of gaseous additives on desulfurization of yanzhou coal through pyrolysis[J]. J Fuel Chem Technol,2002,30(2):175−177. doi: 10.3969/j.issn.0253-2409.2002.02.016
[59]	么秋香. 渭北高硫煤中有机硫赋存状态及热解迁移规律研究[D]. 西安: 西安科技大学, 2015. YAO Qiu-xiang. Occurrence and pyrolysis transformation of organic sulfur during pyrolysis of high sulfur coal from Weibei coalfield[D]. Xi’an: Xi'an University of Science and Technology, 2015.
[60]	刘宝昌. 杂醇气氛下神木烟煤热解研究[D]. 大连: 大连理工大学, 2013. LIU Bao-chang. Research on the pyrolysis of Shenmu bituminous coal under fusel atmosphere[D]. Dalian: Dalian University of Technology, 2013.
[61]	ZHANG Y L, WANG M J, QIN Z, YANG Y L, FU C H, FENG L, CHANG L P. Effect of the interactions between volatiles and char on sulfur transformation during brown coal upgrade by pyrolysis[J]. Fuel,2013,103:915−922. doi: 10.1016/j.fuel.2012.09.061
[62]	王鹏, 齐洪涛, 申岩峰, 王美君, 常丽萍. 次烟煤与高硫焦煤共热解相互影响及动力学研究[J]. 洁净煤技术,2016,22(6):28−33. WANG Peng, QI Hong-tao, SHEN Yan-feng, WANG Mei-jun, CHANG Li-ping. Research on interactions and kinetic during co-pyrolysis of subbituminous coal and high sulfur coking coal[J]. Clean Coal Technol,2016,22(6):28−33.
[63]	SHEN Y F, WANG M J, HU Y F, KONG J, WANG J C, CHANG L P, BAO W R. Transformation and regulation of sulfur during pyrolysis of coal blend with high organic-sulfur fat coal[J]. Fuel,2019,249:427−433. doi: 10.1016/j.fuel.2019.03.066
[64]	SHEN Y F, WANG M J, WU Y C, HU Y F, KONG J, DUAN X B, WANG J C, CHANG L P, BAO W R. Role of gas coal in directional regulation of sulfur during coal-blending coking of high organic-sulfur coking coal[J]. Energy Fuels,2020,34(3):2757−2764. doi: 10.1021/acs.energyfuels.9b03737