Citation: WANG Zhi-cai, PAN Chun-xiu, REN Shi-biao, LEI Zhi-ping, WANG Xiao-ling, SHUI Heng-fu. Modification of Xianfeng lignite by thermal treatment and hydrothermal treatment[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(9): 1032-1037. shu

Modification of Xianfeng lignite by thermal treatment and hydrothermal treatment

1.
School of Chemistry and Chemical Engineering, Anhui University of Technology, Anhui Key Laboratory of Clean Coal Conversion & Utilization, Ma'anshan 243002, China

Corresponding author: WANG Zhi-cai,
Received Date: 10 May 2015
Available Online: 10 July 2015
Fund Project: 国家自然科学基金(21476004, 21476003, 21476002, 21306001, U1361125)) (21476004, 21476003, 21476002, 21306001, U1361125)) 国家自然科学基金重点项目(U1261208) (U1261208)

Modification of low rank coal by thermal treatment is the key to its high-efficiency conversion and utilization. In this paper, the thermal treatment and hydrothermal treatment of Xianfeng lignite were carried out. By combination of the characterizations of structure and properties of treated coals, the modification of thermal treatment and the interaction of water in the hydrothermal process were investigated. The results indicate that the disassociation of non-covalent bonds and the pyrolysis of weak covalent bonds dominate in the treatment process below the pyrolystic temperature of lignite. The hydrothermal reaction can inhibit the pyrolysis of coal matrix and the release of small molecular compounds in the process of hydrothermal treatment. At higher than the pyrolysis of lignite, the thermal treatment shows obvious pyrolysis and deoxygenation. The hydrothermal reaction can provide active hydrogen to stabilize the pyrolysis fragment and avoid the secondary pyrolysis and condensation, so that the extraction and swelling properties of hydrothermal treated coal in mixed solvent were improve at certain extent.
- Xianfeng lignite,
- thermal treatment,
- hydrothermal treatment,
- structural characterization
1. [1]
  [1] RUYTER H P, van RAAM L, van der POEL H. Upgrading of wake field brown coal from south Australia[J]. Fuel Process Technol, 1984, 9(2): 163-171.
2. [2]
  [2] LIU X, LI B, MIURA K. Analysis of pyrolysis and gasification reactions of hydrothermally and supercritically upgraded low-rank coal by using a new distributed activation energy model[J]. Fuel Process Technol, 2001, 69(1): 1-12.
3. [3]
  [3] FAVAS G, JACKSON W R. Hydrothermal dewatering of lower rank coals. 2. Effects of coal characteristics for a range of Australian and international coals[J]. Fuel, 2003, 82(1): 59-69.
4. [4]
  [4] 常鸿雁, 徐文娟, 张德祥, 高晋生. 加压水蒸气下年轻煤脱氧改质的研究[J]. 煤炭转化, 2005, 28(1): 25-29. (CHANG Hong-yan, XU Wen-juan, ZHANG De-xiang, GAO Jin-sheng. Study on the deoxy-modification of low rank coals under pressurized vapour conditions[J]. Coal Conv, 2005, 28(1): 25-29 )
5. [5]
  [5] TIMPE R C, MANN M D, PAVLISH J H, LOUIE P K K. Organic sulfur and hap removal from coal using hydrothermal treatment[J]. Fuel Process Technol, 2001, 37: 127-141.
6. [6]
  [6] 郭延红, 王维周, 张东亮. 低温热改质煤对煤-油-水三元料浆成浆性的影响[J]. 煤炭转化, 2005, 28(2): 53-55 (GUO Yan-hong, WANG Wei-zhou, ZHANG Dong-liang. Effect on slurry ability of cows about modified coal[J]. Coal Conv, 2005, 28(2): 53-55.)
7. [7]
  [7] SHUI H, LI H, CHANG H, WANG Z, GAO Z, LEI Z, REN S. Modification of sub-bituminous coal by steam treatment: Caking and coking properties[J]. Fuel Process Technol, 2011, 92(12): 2299-2304.
8. [8]
  [8] WANG Z, SHUI H, PEI Z, GAO J. Study on the hydrothermal treatment of Shenhua coal[J]. Fuel, 2008, 87(4/5): 527-533.
9. [9]
  [9] 水恒福, 裴占宁, 王知彩. 水热处理对神华煤液化性能的影响[J]. 燃料化学学报, 2007, 35(6): 655-659. (SHUI Heng-fu, PEI Zhan-ning, WANG Zhi-cai. Effect of hydrothermal treatment on the hydroliquefaction property of Shenhua coal[J]. J Fuel Chem Technol, 2007, 35(6): 655-659.)
10. [10]
  [10] 王知彩, 水恒福, 张德祥, 高晋生. 水热处理对神华煤质的影响[J]. 燃料化学学报, 2006, 34(5): 524-529. (WANG Zhi-cai, SHUI Heng-fu, ZHANG De-xiang, GAO Jin-sheng. Effect of hydrothermal treatment on some properties of Shenhua coal[J]. J Fuel Chem Technol, 2006, 34(5): 524-529.)
11. [11]
  [11] SHUI H, NORINAGA K, IINO M. Effect of tetrabutylammonium acetate addition on the aggregation of coal molecules at solution and solid states[J].Energy Fuels, 2001, 15(2): 487-491.
12. [12]
  [12] PAINTER P C, SOBKOWIAK M, YOUTCHEFF J. FT-IR study of hydrogen bonding in coal[J]. Fuel, 1987, 66(7): 973-978.
13. [13]
  [13] TAKANOHASHI T, TERAO Y, IION M. Irreversible structural changes in coals during heating[J]. Energy Fuels, 1999, 13(2): 506-512.
14. [14]
  [14] SHUI H, WANG Z, WANG G. Effect of hydrothermal treatment on the extraction of coal in the CS₂/NMP mixed solvent[J]. Fuel, 2006, 85(12/13): 1798-1802.
15. [15]
  [15] TSE D S, HIRSCHON A S, MALHOTRA R, MCMILLEN D F, ROSS D S. Effect of hydrothermal pretreatment for coprocessing[J]. Prepr Pap-Am Chem Soc, Div Fuel Chem, 1991, 36(1): 23-28.
1. [1]
  Bizhu Shao , Huijun Dong , Yunnan Gong , Jianhua Mei , Fengshi Cai , Jinbiao Liu , Dichang Zhong , Tongbu Lu . Metal-Organic Framework-Derived Nickel Nanoparticles for Efficient CO₂ Electroreduction in Wide Potential Windows. Acta Physico-Chimica Sinica, 2024, 40(4): 2305026-0. doi: 10.3866/PKU.WHXB202305026
2. [2]
  Kun Xu , Xinxin Song , Zhilei Yin , Jian Yang , Qisheng Song . Comprehensive Experimental Design of Preferential Orientation of Zinc Metal by Heat Treatment for Enhanced Electrochemical Performance. University Chemistry, 2024, 39(4): 192-197. doi: 10.3866/PKU.DXHX202309050
3. [3]
  Liping GUO . Synthesis and crystal structure characterization of yttrium imido complex: The reactivity of 2-substituted-1-amino-o-carborane with yttrium dialkyl complex. Chinese Journal of Inorganic Chemistry, 2025, 41(7): 1409-1415. doi: 10.11862/CJIC.20250065
4. [4]
  Hengyi ZHU , Liyun JU , Haoyue ZHANG , Jiaxin DU , Yutong XIE , Li SONG , Yachao JIN , Mingdao ZHANG . Efficient regeneration of waste LiNi_0.5Co_0.2Mn_0.3O₂ cathode toward high-performance Li-ion battery. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 625-638. doi: 10.11862/CJIC.20240358
5. [5]
  Jing Wang , Pingping Li , Yuehui Wang , Yifan Xiu , Bingqian Zhang , Shuwen Wang , Hongtao Gao . Treatment and Discharge Evaluation of Phosphorus-Containing Wastewater. University Chemistry, 2024, 39(5): 52-62. doi: 10.3866/PKU.DXHX202309097
6. [6]
  Zhaohu Li , Weidong Wang , Yuhao Liu , Mingzhe Han , Lingling Wei , Huan Jiao . Research on the Safety Management and Disposal of Chemical Laboratory Waste. University Chemistry, 2024, 39(10): 128-136. doi: 10.3866/PKU.DXHX202312090
7. [7]
  Lisen Sun , Yongmei Hao , Zhen Huang , Yongmei Liu . Experimental Teaching Design for Viscosity Measurement Serves the Optimization of Operating Conditions for Kitchen Waste Treatment Equipment. University Chemistry, 2024, 39(2): 52-56. doi: 10.3866/PKU.DXHX202307063
8. [8]
  Chunai Dai , Yongsheng Han , Luting Yan , Zhen Li , Yingze Cao . Preparation of Superhydrophobic Surfaces and Their Application in Oily Wastewater Treatment: Design of a Comprehensive Physical Chemistry Innovation Experiment. University Chemistry, 2024, 39(2): 34-40. doi: 10.3866/PKU.DXHX202307081
9. [9]
  Zhangshu Wang , Xin Zhang , Jixin Han , Xuebing Fang , Xiufeng Zhao , Zeyu Gu , Jinjun Deng . Exploration and Design of Experimental Teaching on Ultrasonic-Enhanced Synergistic Treatment of Ternary Composite Flooding Produced Water. University Chemistry, 2024, 39(5): 116-124. doi: 10.3866/PKU.DXHX202310056
10. [10]
  Limin Shao , Na Li . A Unified Equation Derived from the Charge Balance Equation for Constructing Acid-Base Titration Curve and Calculating Endpoint Error. University Chemistry, 2024, 39(11): 365-373. doi: 10.3866/PKU.DXHX202401086
11. [11]
  Liyang ZHANG , Dongdong YANG , Ning LI , Yuanyu YANG , Qi MA . Crystal structures, luminescent properties and Hirshfeld surface analyses of three cadmium(Ⅱ) complexes based on 2-(3-(pyridin-2-yl)-1H-pyrazol-1-yl)benzoate. Chinese Journal of Inorganic Chemistry, 2024, 40(10): 1943-1952. doi: 10.11862/CJIC.20240079
12. [12]
  Yaping Li , Sai An , Aiqing Cao , Shilong Li , Ming Lei . The Application of Molecular Simulation Software in Structural Chemistry Education: First-Principles Calculation of NiFe Layered Double Hydroxide. University Chemistry, 2025, 40(3): 160-170. doi: 10.12461/PKU.DXHX202405185
13. [13]
  Yuena Yang , Xufang Hu , Yushan Liu , Yaya Kuang , Jian Ling , Qiue Cao , Chuanhua Zhou . The Realm of Smart Hydrogels. University Chemistry, 2024, 39(5): 172-183. doi: 10.3866/PKU.DXHX202310125
14. [14]
  Qilu DU , Li ZHAO , Peng NIE , Bo XU . Synthesis and characterization of osmium-germyl complexes stabilized by triphenyl ligands. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1088-1094. doi: 10.11862/CJIC.20240006
15. [15]
  Haiyu Nie , Chenhui Zhang , Fengpei Du . Ideological and Political Design for the Preparation, Characterization and Particle Size Control Experiment of Nanoemulsion. University Chemistry, 2024, 39(2): 41-46. doi: 10.3866/PKU.DXHX202306055
16. [16]
  Yongming Guo , Jie Li , Chaoyong Liu . Green Improvement and Educational Design in the Synthesis and Characterization of Silver Nanoparticles. University Chemistry, 2024, 39(3): 258-265. doi: 10.3866/PKU.DXHX202309057
17. [17]
  Yukai Jiang , Yihan Wang , Yunkai Zhang , Yunping Wei , Ying Ma , Na Du . Characterization and Phase Diagram of Surfactant Lyotropic Liquid Crystal. University Chemistry, 2024, 39(4): 114-118. doi: 10.3866/PKU.DXHX202309033
18. [18]
  Lei Shu , Zhengqing Hao , Kai Yan , Hong Wang , Lihua Zhu , Fang Chen , Nan Wang . Development of a Double-Carbon Related Experiment: Preparation, Characterization and Carbon-Capture Ability of Eggshell-Derived CaO. University Chemistry, 2024, 39(4): 149-156. doi: 10.3866/PKU.DXHX202310134
19. [19]
  Keweiyang Zhang , Zihan Fan , Liyuan Xiao , Haitao Long , Jing Jing . Unveiling Crystal Field Theory: Preparation, Characterization, and Performance Assessment of Nickel Macrocyclic Complexes. University Chemistry, 2024, 39(5): 163-171. doi: 10.3866/PKU.DXHX202310084
20. [20]
  Xinyuan Shi , Chenyangjiang , Changyu Zhai , Xuemei Lu , Jia Li , Zhu Mao . Preparation and Photoelectric Performance Characterization of Perovskite CsPbBr₃ Thin Films. University Chemistry, 2024, 39(6): 383-389. doi: 10.3866/PKU.DXHX202312019

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(491)
HTML views(22)

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