Analysis of active microstructure during steam gasification of Shengli char catalyzed by calcium component

LI Na; LI Yang; BAN Yan-peng; SONG Yin-min; ZHOU Hua-cong; ZHI Ke-duan; HE Run-xia; TENG Ying-yue; YANG Ke-li; LIU Quan-sheng

Volume 44 Issue 11

Nov. 2016

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Article Navigation > Journal of Fuel Chemistry and Technology > 2016 > 44(11): 1297-1303

LI Na, LI Yang, BAN Yan-peng, SONG Yin-min, ZHOU Hua-cong, ZHI Ke-duan, HE Run-xia, TENG Ying-yue, YANG Ke-li, LIU Quan-sheng. Analysis of active microstructure during steam gasification of Shengli char catalyzed by calcium component[J]. Journal of Fuel Chemistry and Technology, 2016, 44(11): 1297-1303.

Citation:

LI Na, LI Yang, BAN Yan-peng, SONG Yin-min, ZHOU Hua-cong, ZHI Ke-duan, HE Run-xia, TENG Ying-yue, YANG Ke-li, LIU Quan-sheng. Analysis of active microstructure during steam gasification of Shengli char catalyzed by calcium component[J]. Journal of Fuel Chemistry and Technology, 2016, 44(11): 1297-1303.

Citation:

LI Na, LI Yang, BAN Yan-peng, SONG Yin-min, ZHOU Hua-cong, ZHI Ke-duan, HE Run-xia, TENG Ying-yue, YANG Ke-li, LIU Quan-sheng. Analysis of active microstructure during steam gasification of Shengli char catalyzed by calcium component[J]. Journal of Fuel Chemistry and Technology, 2016, 44(11): 1297-1303.

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Analysis of active microstructure during steam gasification of Shengli char catalyzed by calcium component

Department of Chemical Engineering, Inner Mongolia University of Technology, Inner Mongolia Key Laboratory of High-Value Functional Utilization of Low Rank Carbon Resources, Huhhot 010051, China

Funds:

The project was supported by the National Natural Science Foundation of China 21676149

The project was supported by the National Natural Science Foundation of China 21606134

The project was supported by the National Natural Science Foundation of China 21566029

The project was supported by the National Natural Science Foundation of China 21566028

The project was supported by the National Natural Science Foundation of China 21266017

Natural Science Foundation of Inner Mongolia 2014MS0220

Natural Science Foundation of Inner Mongolia 2015BS0206

Natural Science Foundation of Inner Mongolia 2016BS0204

Received Date: 2016-05-31
Rev Recd Date: 2016-08-10

Available Online: 2021-01-23

Publish Date: 2016-11-10

Abstract

Abstract

The catalytic effect of calcium component on steam gasification of Shengli lignite char was studied. Demineralized coal samples were loaded with calcium oxide and pyrolyzed at 1 100℃ (Ca-J). Ca-J⁺ was prepared from Ca-J treated by hydrochloric acid. The char samples were characterized by BET, SEM-EDS, XRD, FT-IR and XPS. The steam gasification of the char samples was performed in a micro fixed bed reactor. The possible catalytic active micro structure was discussed and proposed. The results show that carbon conversion and reactivity index of Ca-J and Ca-J⁺ samples during steam gasification were substantially similar, but much higher than those of demineralized char samples (SL⁺-J). Ca (CH₃COO)₂ and Ca-OOR, two calcium species are present in Ca-J⁺ sample determined by XPS. Chemical analysis and SEM-EDS prove that calcium content of Ca-J⁺ decreases by more than 97% than that of Ca-J sample. XRD analysis indicates free inorganic mineral (CaS, CaO) is removed by hydrochloric acid. FT-IR spectra show C=O, C-O peaks present in Ca-J and Ca-J⁺ samples. So it is postulated that "R-O-Ca-O-R'" (R and R' are aliphatic and aromatic structures, respectively) is the catalyst active microstructure during char steam gasification.
- Shengli char,
- steam gasification,
- catalysis of calcium component,
- active microstructure

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References(31)

References

[1]	刘立志.内蒙古中部褐煤资源开发及区域效应研究[D].长春:东北师范大学, 2013. LIU Li-zhi. The central inner mongolia coal resources development and regional effect research[D]. Changchun:Northeast Normal University, 2013.
[2]	周晨亮, 刘全生, 李阳, 智科端, 滕英跃, 宋银敏, 何润霞.固有矿物质对胜利褐煤热解气态产物生成及其动力学特性影响的实验研究[J].中国电机工程学报, 2013, 33(35):21-27. http://or.nsfc.gov.cn/handle/00001903-5/27221 ZHOU Chen-liang, LIU Quan-sheng, LI Yang, ZHI Ke-duan, TENG Ying-yue, SONG Yin-min, HE Run-xia. Effects of inherent minerals on the production of pyrolysis gases and the corresponding kinetics for shengli lignite[J]. Proc CSEE, 2013, 33(35):21-27. http://or.nsfc.gov.cn/handle/00001903-5/27221
[3]	许修强, 王永刚, 陈国鹏, 白磊, 张锟俊, 杨萨莎, 张书.水蒸气对褐煤原位气化半焦反应性能及微观结构的影响[J].燃料化学学报, 2015, 43(1):1-8. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract18622.shtml XU Xiu-qiang, WANG Yong-gang, CHEN Guo-peng, BAI Lei, ZHANG Kun-jun, YANG Sa-sha, ZHANG Shu. Influence of cooling treatments on char microstructure and reactivity of Shengli brown coal[J]. J Fuel Chem Technol, 2015, 43(1):1-8. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract18622.shtml
[4]	许修强, 王永刚, 张书, 陈宗定, 陈绪军, 贺欣.褐煤原位气化半焦的反应性及微观结构的演化行为[J].燃料化学学报, 2015, 43(3):273-280. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract18585.shtml XU Xiu-qiang, WANG Yong-gang, ZHANG Shu, CHEN Zong-ding, CHEN Xu-jun, HE Xin. Evolution behavior of reactivity and microstructure of lignite char during in-situ gasification with steam[J]. J Fuel Chem Technol, 2015, 43(3):273-280. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract18585.shtml
[5]	WANG J, JIANG M Q, YAO Y H, ZHANG Y M, CAO J Q. Steam gasification of coal char catalyzed by K₂CO₃ for enhanced production of hydrogen without formation of methane[J]. Fuel, 2009, 88(9):1572-1579. doi: 10.1016/j.fuel.2008.12.017
[6]	WANG J, YAO Y H, CAO J Q, JIANG M Q. Enhanced catalysis of K₂CO₃ for steam gasification of coal char by using Ca (OH)₂ in char preparation[J]. Fuel, 2010, 89(2):310-317. doi: 10.1016/j.fuel.2009.09.001
[7]	王兴军, 陈凡敏, 刘海峰, 于广锁, 王辅臣.煤水蒸气气化过程中钾催化剂与矿物质的相互作用[J].燃料化学学报, 2013, 41(1):9-12. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract18093.shtml WANG Xing-jun, CHEN Fan-min, LIU Hai-feng, YU Guang-suo, WANG Fu-chen. Interaction of potassium with mineral matter in coal during steam gasification[J]. J Fuel Chem Technol, 2013, 41(1):9-12. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract18093.shtml
[8]	OHTSUKA Y, ASAMI K. Steam gasification of coals with calcium hydroxide[J]. Energy Fuels, 1995, 9(6):1038-1042. doi: 10.1021/ef00054a016
[9]	OHTSUKA Y, ASAMI K. Ion-exchanged calcium from calcium carbonate and low-rank coals:High catalytic activity in steam gasification[J]. Energy Fuels, 1996, 10(2):431-435. doi: 10.1021/ef950174f
[10]	JIANG M Q, ZHOU R, HU J, WANG F C, WANG J. Calcium-promoted catalytic activity of potassium carbonate for steam gasification of coal char:Influences of calcium species[J]. Fuel, 2012, 99:64-71. doi: 10.1016/j.fuel.2012.04.007
[11]	周晨亮, 刘全生, 李阳, 智科端, 滕英跃, 宋银敏.胜利褐煤水蒸气气化制富氢合成气及其固有矿物质的催化作用[J].化工学报, 2013, 64(6):2092-2102. http://www.cnki.com.cn/Article/CJFDTOTAL-HGSZ201306031.htm ZHOU Chen-liang, LIU Quan-sheng, LI Yang, ZHI Ke-duan, TENG Ying-yue, SONG Yin-min. Production of hydrogen-rich syngas by steam gasification of Shengli lignite and catalytic effect of inherent minerals[J]. CIESC J, 2013, 64(6):2092-2102. http://www.cnki.com.cn/Article/CJFDTOTAL-HGSZ201306031.htm
[12]	LI Y, ZHOU C L, LI N, ZHI K D, SONG Y M, HE R X, TENG Y Y, LIU Q S. Production of high H₂/CO syngas by steam gasification of shengli lignite:Catalytic effect of inherent minerals[J]. Energy Fuels, 2015, 29(8):4738-4746. doi: 10.1021/acs.energyfuels.5b00168
[13]	CLEMENS A H, DAMIANO L F, MATHESON T W. The effect of calcium on the rate and products of steam gasification of char from low rank coal[J]. Fuel, 1998, 77(9):1017-1020. https://www.researchgate.net/publication/244066943_The_effect_of_calcium_on_the_rate_and_products_of_steam_gasification_of_char_from_low_rank_coal
[14]	李阳, 李娜, 刘洋, 冯伟, 赵斌, 智科端, 何润霞, 滕英跃, 宋银敏, 周晨亮, 刘全生.制焦温度对加钙煤焦结构及其水蒸气气化反应性能的影响[J].内蒙古工业大学学报:自然科学版, 2015, 34(4):270-275. http://www.cnki.com.cn/Article/CJFDTOTAL-NMGD201504005.htm LI Yang, LI Na, LIU Yang, FENG Wei, ZHAO Bin, ZHI Ke-duan, HE Run-xia, TENG Ying-yue, SONG Yin-min, ZHOU Chen-liang, LIU Quan-sheng. Effect of pyrolysis temperature on the structure and steam gasification reactivity of calcium-added char[J]. J Inner Mongolia Univ Technol (Nat Sci Ed), 2015, 34(4):270-275. http://www.cnki.com.cn/Article/CJFDTOTAL-NMGD201504005.htm
[15]	李阳, 刘洋, 冯伟, 赵斌, 智科端, 宋银敏, 何润霞, 周晨亮, 刘全生.氧化钙对胜利褐煤焦水蒸气气化反应性能及微结构的影响[J].燃料化学学报, 2015, 43(9):1038-1043. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract18687.shtml LI Yang, LIU Yang, FENG Wei, ZHAO Bin, ZHI Ke-duan, SONG Yin-min, HE Run-xia, ZHOU Chen-liang, LIU Quan-sheng. Influence of calcium oxide on Shengli lignite char microstructure and steam gasification performance[J]. J Fuel Chem Technol, 2015, 43(9):1038-1043. http://rlhxxb.sxicc.ac.cn/CN/abstract/abstract18687.shtml
[16]	ZHANG Z G, KYOTANI T, TOMITA A. TPD study on coal chars chemisorbed with oxygen-containing gases[J]. Energy Fuels, 1988, 2(5):679-684. doi: 10.1021/ef00011a014
[17]	JO-SHU C, ADCOCK J P, LAUDERBACK L L, FALCONER J L. TPR and SIMS studies of CaCO₃ catalyzed CO₂ gasification of carbon[J]. Carbon, 1989, 27(4):593-602. doi: 10.1016/0008-6223(89)90010-9
[18]	CAZORLA-AMOROS D, LINARES-SOLANO A, DE LECEA C S M, JOLY J P. Calcium-carbon interaction study:Its importance in the carbon-gas reactions[J]. Carbon, 1991, 29(3):361-369. doi: 10.1016/0008-6223(91)90205-W
[19]	CAZORLA-AMOROS D, LINARES-SOLANO A, MARCILLA GOMIS A F, SALINAS-MARTINAS DE C. Calcium catalytic active sites in carbon-gas reactions. Determination of the specific activity[J]. Energy Fuels, 1991, 5(6):796-802. doi: 10.1021/ef00030a005
[20]	CAZORLA-AMOROS D, LINARES-SOLANO A, SALINAS-MARTINEZD L C, JOLY J P. A temperature-programmed reaction study of calcium-catalyzed carbon gasification[J]. Energy Fuels, 1992, 6(3):287-293. doi: 10.1021/ef00033a008
[21]	冯杰, 李文英, 谢克昌.石灰石在煤水蒸气气化中的催化作用[J].太原工业大学学报, 1996, 27(4):50-56. http://www.cnki.com.cn/Article/CJFDTOTAL-TYGY604.010.htm FENG Jie, LI Wen-ying, XIE Ke-chang. The catalysis of limestone during the steam gasification of coal[J]. J Taiyuan Univ Technol, 1996, 27(4):50-56. http://www.cnki.com.cn/Article/CJFDTOTAL-TYGY604.010.htm
[22]	OAHTSUK Y, XU C, KONG D, TSUBOUCHI N. Decomposition of ammonia with iron and calcium catalysts supported on coal chars[J]. Fuel, 2004, 83(6):685-692. doi: 10.1016/j.fuel.2003.05.002
[23]	LI X, BAI Z Q, BAI J, ZHAO B B, LI P, HAN YN, LI W. Effect of Ca²⁺ species with different modes of occurrence on direct liquefaction of a calcium-rich lignite[J]. Fuel Process Technol, 2015, 133:161-166. doi: 10.1016/j.fuproc.2015.02.001
[24]	朱廷钰, 张守玉, 黄戒介, 王洋.氧化钙对流化床煤温和气化半焦性质的影响[J].燃料化学学报, 2000, 28(1):40-43. http://www.cnki.com.cn/Article/CJFDTOTAL-RLHX200001009.htm ZHU Ting-yu, ZHANG Shou-yu, HUANG Jie-jie, WANG Yang. Effect of calcium oxide on properties of char from fluidized bed coal mild gasification[J]. J Fuel Chem Technol, 2000, 28(1):40-43. http://www.cnki.com.cn/Article/CJFDTOTAL-RLHX200001009.htm
[25]	WANG J, MORISHITA K, TAKARADA T. High-temperature interactions between coal char and mixtures of calcium oxide, quartz, and kaolinite[J]. Energy Fuels, 2001, 15(5):1145-1152. doi: 10.1021/ef0100092
[26]	JOLY J P, CAZORLA-AMOROS D, CHARCOSSE H, LINARES-SOLANO A, MARCILIO N R, MARTINEZ-ALONSO A, SALINAS-MARTINEZ DE LECEA C. The state of calcium as a char gasification catalyst-a temperature-programmed reaction study[J]. Fuel, 1990, 69(7):878-884. doi: 10.1016/0016-2361(90)90235-I
[27]	TSUBOUCHI N, XU C, OHTSUKA Y. Carbon crystallization during high-temperature pyrolysis of coals and the enhancement by calcium[J]. Energy Fuels, 2003, 17(5):1119-1125. doi: 10.1021/ef020265u
[28]	DEAN J A. Lange's Handbook of Chemistry[M]. Beijing:Science Press, 1991.
[29]	谢克昌.煤的结构与反应性[M].北京:科学出版社, 2002:116-130. XIE Ke-chang. Coal Structure and Its Reactivity[M]. Beijing:Science Press, 2002:116-130.
[30]	VAN HEEK K H, HODEK W. Structure and pyrolysis behavior of different coals and relevant model substances[J]. Fuel, 1994, 73(6):886-896. doi: 10.1016/0016-2361(94)90283-6
[31]	MARRIOTT A S, HUNT A J, BERGSTROM E, WILSON K, BUDARIN V L, THOMAS-OATE J, BRYDSON R. Investigating the structure of biomass-derived non-graphitizing mesoporous carbons by electron energy loss spectroscopy in the transmission electron microscope and X-ray photoelectron spectroscopy[J]. Carbon, 2014, 67:514-524. doi: 10.1016/j.carbon.2013.10.024