Citation: Wei-dong XIA, Jun-qin YU, Lu DING, Yan GONG, Guang-suo YU. Release characteristics of AAEMs and physicochemical structural evolution of char during rapid coal pyrolysis[J]. Journal of Fuel Chemistry and Technology, ;2022, 50(3): 268-274. doi: 10.1016/S1872-5813(21)60155-X shu

Release characteristics of AAEMs and physicochemical structural evolution of char during rapid coal pyrolysis

Wei-dong XIA ^1, ,
Jun-qin YU ¹ ,
Lu DING ^1,, ,
Yan GONG ¹ ,
Guang-suo YU ^{1, 2,,}

1.
Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai 200237, China
2.
State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China

Corresponding author: Lu DING, dinglu@ecust.edu.cn Guang-suo YU, gsyu@ecust.edu.cn
Received Date: 30 June 2021
Revised Date: 23 August 2021

Figures(7)

Rapid pyrolysis experiment of Zhundong coal was conducted in a high-frequency furnace to investigate release characteristics of alkali and alkaline earth metals (AAEMs) and its correlation with changes of physical and chemical properties of char. Residence time and atmosphere during pyrolysis were important process parameters that affected the migration characteristics of AAEMs and physicochemical structural evolution of char. Experimental results show that the release of AAEMs in coal char increases over time. The maximum release rate of Na, Mg and Ca is 61.05%, 64.47%, and 44.01%, respectively. Promoting effect of CO₂ on release of Na mainly occurs in the initial stage of rapid pyrolysis, nevertheless the promoting effect on release of Mg and Ca mainly is in the middle and late stage. CO₂ accelerates release of AAEMs by promoting release of volatiles, facilitating decomposition of oxygen-containing functional groups and aliphatic functional groups, and promoting formation of cracks on surface of coal char.
- rapid pyrolysis,
- alkali and alkaline earth metals,
- release characteristics,
- physicochemical structural evolution
1. [1]
  WU Xue-cheng, WANG Qin-hui, LUO Zhong-yang, FANG Meng-xiang, CEN Ke-fa. Kinetic model prediction for various coal gasification schemes in a fluidized bed Ⅰ. Model establishment and validation[J]. J Fuel Chem Technol,2004,32(3):287−291. doi: 10.3969/j.issn.0253-2409.2004.03.007
2. [2]
  LIU Jia-li, HE Hong-guang. Study on properties of Zhundong coal in Xinjiang region and type-selection for boilers burning this coal sort[J]. Therm Power Gener,2010,39(8):38−40. doi: 10.3969/j.issn.1002-3364.2010.08.038
3. [3]
  QI Xiao-bin, SONG Guo-liang, SONG Wei-jian, LV Qing-gang. Alkali metal migration and slagging characteristic during Zhundong high-alkali coal gasification[J]. J Fuel Chem Technol,2015,43(8):906−913. doi: 10.3969/j.issn.0253-2409.2015.08.002
4. [4]
  LIU Da-hai, ZHANG Shou-yu, CHEN Chuan, TU Sheng-kang, JIN Tao, ZHENG Hong-jun, WU Qiao-mei, DENG Wen-xiang, TANG Wen-jiao, SHI Da-zhong, LV Jun-fu. Existence form of sodium in the high sodium coals from Xinjiang during its sodium removal process[J]. J China Coal Soc,2014,39(12):2519−2524.
5. [5]
  ZHOU Yong-gang, FAN Jian-yong, LI Pei, WANG Bing-hui, ZHAO Hong. Slagging characteristics of high alkalis Zhundong coal[J]. J Zhejiang Univ,2014,48(11):2061−2065.
6. [6]
  CHENG Ke-yang, FANG Yun-peng, WU Liang, ZHU Yu-han, ZHU Rong-jin, HU Yi-qing, ZHANG Sheng-fu. Kinetics of Coke Gasification Reaction under Catalysis of Alkali Carbonates[C]//Proceedings of the 12^th CSM Steel Congress: Beijing: Metallurgical Industry Press, 2019.
7. [7]
  FAN Wen-ke, CUI Tong-ming, LI Hong-jun, CHANG Qing-hua, GUO Qing-hua, YU Guang-suo, WANG Fu-chen. Effect of AAEM on gasification reactivity of Shenfu char[J]. J Fuel Chem Technol,2016,44(8):897−903. doi: 10.3969/j.issn.0253-2409.2016.08.001
8. [8]
  YU Shu-cai. Research on gasification of coke with H₂O under alkali condition[D]. Anhui: Anhui University of Technology, 2017.
9. [9]
  MURRAY J B. Changes in state of combination of inorganic constituents during carbonization of Victorian brown coal[J]. Fuel,1973,52(2):105−111. doi: 10.1016/0016-2361(73)90030-6
10. [10]
  WEI X F, HUANG J J, LIU T F, FANG Y T, WANG Y. Transformation of alkali metals during gasification and gasification of a lignite[J]. Energy Fuels,2008,22(3):1840−1844. doi: 10.1021/ef7007858
11. [11]
  LI R B, CHEN Q, ZHANG X Z. Detailed investigation on sodium (Na) species release and transformation mechanism during gasification and char gasification of high-Na Zhundong coal[J]. Energy Fuels,2017,31:5902−5912. doi: 10.1021/acs.energyfuels.7b00410
12. [12]
  LI W Q, WANG L Y, QIAO Y, LIN J Y, WANG M J, CHANG L P. Effect of atmosphere on the release behavior of alkali and alkaline earth metals during coal oxy-fuel combustion[J]. Fuel,2015,139:164−170. doi: 10.1016/j.fuel.2014.08.056
13. [13]
  SONG G L, YANG S B, SONG W J, QI X B. Release and transformation behaviors of sodium during combustion of high alkali residual carbon[J]. Appl Therm Eng,2017,122:285−296. doi: 10.1016/j.applthermaleng.2017.04.139
14. [14]
  BAI Y H, ZHU S H, LUO K, GAO M Q, YAN L J, LI F. Coal char gasification in H₂O/CO₂: Release of alkali and alkaline earth metallic species and their effects on reactivity[J]. Appl Therm Eng,2017,112:156−163. doi: 10.1016/j.applthermaleng.2016.10.044
15. [15]
  YANG X H, LV P, ZHU S H, YAN L J, BAI Y H, LI F. Release of Ca during coal gasification and char gasification in H₂O, CO₂ and their mixtures[J]. J Anal Appl Pyrolysis,2018,132:217−224. doi: 10.1016/j.jaap.2018.02.008
16. [16]
  CHANG Qing-hua. The experimental and simulation study of generation and oxidation of coal-derived soot[D]. Shanghai: East China University of Science and Technology.
17. [17]
  ZHU H L, YU G S, GUO Q H, WANG X J. In situ raman spectroscopy study on catalytic gasification of a bituminous coal[J]. Energy Fuels,2017,31:5817−5827. doi: 10.1021/acs.energyfuels.6b03042
18. [18]
  SADEZKY A, MUCKENHUBER H, GRPTHE H, NIESSNER R, PÖSCHL U. Raman microspectroscopy of soot and related carbonaceous materials: Spectral analysis and structural information[J]. Carbon,2005,43(8):1731−1742. doi: 10.1016/j.carbon.2005.02.018
19. [19]
  ZHANG S, HAYASHI J, LI C Z. Volatilisation and catalytic effects of alkali and alkaline earth metallic species during the gasification and gasification of Victorian brown coal. Part IX. Effects of volatile-char interactions on char-H₂O and char-O₂ reactivities[J]. Fuel,2011,90(4):1655−1661. doi: 10.1016/j.fuel.2010.11.008
1. [1]
  Jing WU , Puzhen HUI , Huilin ZHENG , Pingchuan YUAN , Chunfei WANG , Hui WANG , Xiaoxia GU . Synthesis, crystal structures, and antitumor activities of transition metal complexes incorporating a naphthol-aldehyde Schiff base ligand. Chinese Journal of Inorganic Chemistry, 2024, 40(12): 2422-2428. doi: 10.11862/CJIC.20240278
2. [2]
  Xueyu Lin , Ruiqi Wang , Wujie Dong , Fuqiang Huang . 高性能双金属氧化物负极的理性设计及储锂特性. Acta Physico-Chimica Sinica, 2025, 41(3): 2311005-. doi: 10.3866/PKU.WHXB202311005
3. [3]
  Limei CHEN , Mengfei ZHAO , Lin CHEN , Ding LI , Wei LI , Weiye HAN , Hongbin WANG . Preparation and performance of paraffin/alkali modified diatomite/expanded graphite composite phase change thermal storage material. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 533-543. doi: 10.11862/CJIC.20230312
4. [4]
  Zuozhong Liang , Lingling Wei , Yiwen Cao , Yunhan Wei , Haimei Shi , Haoquan Zheng , Shengli Gao . Exploring the Development of Undergraduate Scientific Research Ability in Basic Course Instruction: A Case Study of Alkali and Alkaline Earth Metal Complexes in Inorganic Chemistry. University Chemistry, 2024, 39(7): 247-263. doi: 10.3866/PKU.DXHX202310103
5. [5]
  Qin ZHU , Jiao MA , Zhihui QIAN , Yuxu LUO , Yujiao GUO , Mingwu XIANG , Xiaofang LIU , Ping NING , Junming GUO . Morphological evolution and electrochemical properties of cathode material LiAl_0.08Mn_1.92O₄ single crystal particles. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1549-1562. doi: 10.11862/CJIC.20240022
6. [6]
  Yahui HAN , Jinjin ZHAO , Ning REN , Jianjun ZHANG . Synthesis, crystal structure, thermal decomposition mechanism, and fluorescence properties of benzoic acid and 4-hydroxy-2, 2′: 6′, 2″-terpyridine lanthanide complexes. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 969-982. doi: 10.11862/CJIC.20240395
7. [7]
  Xin MA , Ya SUN , Na SUN , Qian KANG , Jiajia ZHANG , Ruitao ZHU , Xiaoli GAO . A Tb₂ complex based on polydentate Schiff base: Crystal structure, fluorescence properties, and biological activity. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1347-1356. doi: 10.11862/CJIC.20230357
8. [8]
  Xiaoling LUO , Pintian ZOU , Xiaoyan WANG , Zheng LIU , Xiangfei KONG , Qun TANG , Sheng WANG . Synthesis, crystal structures, and properties of lanthanide metal-organic frameworks based on 2, 5-dibromoterephthalic acid ligand. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1143-1150. doi: 10.11862/CJIC.20230271
9. [9]
  Zitong Chen , Zipei Su , Jiangfeng Qian . Aromatic Alkali Metal Reagents: Structures, Properties and Applications. University Chemistry, 2024, 39(8): 149-162. doi: 10.3866/PKU.DXHX202311054
10. [10]
  Tianyun Chen , Ruilin Xiao , Xinsheng Gu , Yunyi Shao , Qiujun Lu . Synthesis, Crystal Structure, and Mechanoluminescence Properties of Lanthanide-Based Organometallic Complexes. University Chemistry, 2024, 39(5): 363-370. doi: 10.3866/PKU.DXHX202312017
11. [11]
  Xin XIONG , Qian CHEN , Quan XIE . First principles study of the photoelectric properties and magnetism of La and Yb doped AlN. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1519-1527. doi: 10.11862/CJIC.20240064
12. [12]
  Haitang WANG , Yanni LING , Xiaqing MA , Yuxin CHEN , Rui ZHANG , Keyi WANG , Ying ZHANG , Wenmin WANG . Construction, crystal structures, and biological activities of two Ln^Ⅲ₃ complexes. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1474-1482. doi: 10.11862/CJIC.20240188
13. [13]
  Chen LU , Qinlong HONG , Haixia ZHANG , Jian ZHANG . Syntheses, structures, and properties of copper-iodine cluster-based boron imidazolate framework materials. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 149-154. doi: 10.11862/CJIC.20240407
14. [14]
  Yuxin CHEN , Yanni LING , Yuqing YAO , Keyi WANG , Linna LI , Xin ZHANG , Qin WANG , Hongdao LI , Wenmin WANG . Construction, structures, and interaction with DNA of two Sm^Ⅲ₄ complexes. Chinese Journal of Inorganic Chemistry, 2025, 41(6): 1141-1150. doi: 10.11862/CJIC.20240258
15. [15]
  Jingjing QING , Fan HE , Zhihui LIU , Shuaipeng HOU , Ya LIU , Yifan JIANG , Mengting TAN , Lifang HE , Fuxing ZHANG , Xiaoming ZHU . Synthesis, structure, and anticancer activity of two complexes of dimethylglyoxime organotin. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1301-1308. doi: 10.11862/CJIC.20240003
16. [16]
  Changqing MIAO , Fengjiao CHEN , Wenyu LI , Shujie WEI , Yuqing YAO , Keyi WANG , Ni WANG , Xiaoyan XIN , Ming FANG . Crystal structures, DNA action, and antibacterial activities of three tetranuclear lanthanide-based complexes. Chinese Journal of Inorganic Chemistry, 2024, 40(12): 2455-2465. doi: 10.11862/CJIC.20240192
17. [17]
  Qiaowen CHANG , Ke ZHANG , Guangying HUANG , Nuonan LI , Weiping LIU , Fuquan BAI , Caixian YAN , Yangyang FENG , Chuan ZUO . Syntheses, structures, and photo-physical properties of iridium phosphorescent complexes with phenylpyridine derivatives bearing different substituting groups. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 235-244. doi: 10.11862/CJIC.20240311
18. [18]
  Hongjie SHEN , Haozhe MIAO , Yuhe YANG , Yinghua LI , Deguang HUANG , Xiaofeng ZHANG . Synthesis, crystal structure, and fluorescence properties of two Cu(Ⅰ) complexes based on pyridyl ligand. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 855-863. doi: 10.11862/CJIC.20250009
19. [19]
  Yi DING , Peiyu LIAO , Jianhua JIA , Mingliang TONG . Structure and photoluminescence modulation of silver(Ⅰ)-tetra(pyridin-4-yl)ethene metal-organic frameworks by substituted benzoates. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 141-148. doi: 10.11862/CJIC.20240393
20. [20]
  Xinyu Miao , Hao Yang , Jie He , Jing Wang , Zhiliang Jin . Adjusting the electronic structure of Keggin-type polyoxometalates to construct S-scheme heterojunction for photocatalytic hydrogen evolution. Acta Physico-Chimica Sinica, 2025, 41(6): 100051-. doi: 10.1016/j.actphy.2025.100051

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(1531)
HTML views(282)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142