Citation: GAO Jian, SU Sheng, XU Kai, CUI Xiao-ning, LIU Li-jun, ZHANG Chun-xiu, WANG Yi, HU Song, XIANG Jun. Effect of temperature and water vapor on the form and evolution characteristics of nitrogen in coal char[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(1): 8-13. shu

Effect of temperature and water vapor on the form and evolution characteristics of nitrogen in coal char

GAO Jian ¹ ,
SU Sheng ^1,2,, ,
XU Kai ^1,2 ,
CUI Xiao-ning ¹ ,
LIU Li-jun ¹ ,
ZHANG Chun-xiu ¹ ,
WANG Yi ¹ ,
HU Song ¹ ,
XIANG Jun ^1,2

1.
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2.
Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518052, China

Corresponding author: SU Sheng, susheng@mail.hust.edu.cn
Received Date: 5 September 2018
Revised Date: 10 November 2018

Fund Project: the National Natural Science Foundation of China 51576081The project was supported by the National Natural Science Foundation of China (51576081) and Science and Technology Project of Shenzhen (JCYJ20170307172446325)Science and Technology Project of Shenzhen JCYJ20170307172446325

Figures(8)

Studying the evolution and transformation of different forms of nitrogen in pyrolysis under water vapor atmosphere is conducive to control formation of nitrogen oxides. X-ray photoelectron spectroscopy (XPS) was used to examine forms of nitrogen in typical bituminous coal and its char, and effects of temperature, water vapor on evolution and conversion characteristics of coal nitrogen were investigated. The results indicate that raising temperature and concentration of water vapor are conducive to evolution of char nitrogen. When concentration of water vapor reaches 30%, the char nitrogen evolution reaches a peak. The presence of water vapor facilitates the evolution of N-5 and N-6 from coal char and suppresses that of N-Q and N-X, because the gasification effect of water vapor is beneficial to breaking aromatic structure, but the conversion of N-6 to N-Q and N-X is promoted as a result of H and OH groups brought by the high concentration of water vapor.
- char,
- nitrogen content,
- vapor,
- nitrogen forms,
- XPS
1. [1]
  CHE De-fu. Thermal Coal-N Transformation and Nitrogen Oxide Generation[M]. Xi'an:Xi'an Jiaotong University Press, 2013.
2. [2]
  KAMBARA S, TAKARADA T, TOYOSHIMA M, KATO K. Relation between functional forms of coal nitrogen and NO_x emissions from pulverized coal combustion[J]. Fuel, 1995,74(9):1247-1253. doi: 10.1016/0016-2361(95)00090-R
3. [3]
  KAMBARA S, TAKARADA T, YAMAMOTO Y, KATO K. Relation between functional forms of coal nitrogen and formation of nitrogen oxide (NO_x) precursors during rapid pyrolysis[J]. Energy Fuels, 1993,7(6):1013-1020. doi: 10.1021/ef00042a045
4. [4]
  NELSON P F, BUCKLEY A N, KELLY M D. Functional forms of nitrogen in coals and the release of coal nitrogen as NO_x precursors (HCN and NH₃)[J]. Symp Combust, 1992,24(1):1259-1267.
5. [5]
  NELSON P F, KELLY M D, WORNAT M J. Conversion of fuel nitrogen in coal volatiles to NO_x precursors under rapid heating conditions[J]. Fuel, 1991,70(3):403-407.
6. [6]
  LI C Z, NELSON P F, LEDESMA E B, MACKIE J C. An experimental study of the release of nitrogen from coals pyrolyzed in fluidized-bed reactors[J]. Symp Combust, 1996,26(2):3205-3211.
7. [7]
  YAO Ming-yu, LIU Yan-hua, CHE De-fu. Investigation on effects of oxygen on the transformation of Yibin coal nitrogen functionality[J]. Combust Sci Technol, 2004,10(4):336-340. doi: 10.3321/j.issn:1006-8740.2004.04.010
8. [8]
  ZHANG Y, ZHANG J, SHENG C, CHEN J, LIU Y, ZHAO L, XIE F. X-ray photoelectron spectroscopy (XPS) investigation of nitrogen functionalities during coal char combustion in O₂/CO₂ and O₂/Ar atmospheres[J]. Energy Fuels, 2010,25(1):240-245.
9. [9]
  WÓJTOWICZ M A, PELS J R, MOULIJN J A. The fate of nitrogen functionalities in coal during pyrolysis and combustion[J]. Fuel, 1995,74(4):507-516.
10. [10]
  FRIEBEL J, KÖPSEL R F W. The fate of nitrogen during pyrolysis of German low rank coals-A parameter study[J]. Fuel, 1999,78(8):923-932. doi: 10.1016/S0016-2361(99)00008-3
11. [11]
  YOU Zhuo. NO_x control and efficiency optimization of oxy-fuel combustion system[D]. Hangzhou: Zhejiang University, 2013.
12. [12]
  WANG Ben. The release characteristics and chemical kinetics simulation of typical coals in oxy-fuel combustion[D]. Wuhan: Huazhong University of Science and Technology, 2012.
13. [13]
  ZOU C, HE Y, SONG Y, HAN Q, LIU Y, GUO F, ZHENG C. The characteristics and mechanism of the NO formation during oxy-steam combustion[J]. Fuel, 2015,158:874-883. doi: 10.1016/j.fuel.2015.06.034
14. [14]
  HUANG Xiang-yong, HUANG Che, LI Xiao-chuan, SUN Jing-bao, LIU Ye-ming. Conversion characteristics of fuel nitrogen functionalities under atmosphere of high concentration of CO₂[J]. J North China Electric Power Univ(Nat Sci Ed), 2016,43(6):97-101. doi: 10.3969/j.ISSN.1007-2691.2016.06.15
15. [15]
  WANG Zong-hua. Research on form transformation and releasing regulation of fuel-N during pyrolysis and gasification[D]. Wuhan: Huazhong University of Science and Technology, 2011.
16. [16]
  XU Jun, SUN Zhi-jun, XIONG Zhe, TANG Hao, LIU Jia-wei, SU Sheng, HU Song, WANG Yi, XU Kai, XIANG Jun. Effects of steam on the char structures under CO₂/H₂O atmospheres[J]. J Eng Thermophys-Rus, 2017(11):2467-2471.
17. [17]
  XU J, SU S, SUN Z, SI N, QING M, LIU L, HU S, WANG Y, TANG H. Effects of H₂O gasification reaction on the characteristics of chars under oxy-fuel combustion conditions with wet recycle[J]. Energy Fuels, 2016,30(11):9071-9079. doi: 10.1021/acs.energyfuels.6b01725
18. [18]
  KELEMEN S R, GORBATY M L, KWIATEK P J. Quantification of nitrogen forms in Argonne premium coals[J]. Energy Fuels, 1994,8(4):896-906.
19. [19]
  LI Mei, YANG Jun-he, ZHANG Qi-feng, CHANG Hai-zhou, SUN Hui. XPS study on transformation of N and S functional groups during pyrolysis of high sulfur New Zealand coal[J]. J Fuel Chem Technol, 2013,41(11):1287-1293.
20. [20]
  ZHU Hong-bin, NI Yan-hui, TANG Li-hua, ZHENG Zhi-sheng, ZHU Zi-bin. Research of coal flash hydropyrolysis Ⅵ.chemical type analysis of nitrogen in coal and semi-coke[J]. J Fuel Chem Technol, 2001,29(2):124-128. doi: 10.3969/j.issn.0253-2409.2001.02.007
1. [1]
  Xue Liu , Lipeng Wang , Luling Li , Kai Wang , Wenju Liu , Biao Hu , Daofan Cao , Fenghao Jiang , Junguo Li , Ke Liu . Cu基和Pt基甲醇水蒸气重整制氢催化剂研究进展. Acta Physico-Chimica Sinica, 2025, 41(5): 100049-. doi: 10.1016/j.actphy.2025.100049
2. [2]
  Kai CHEN , Fengshun WU , Shun XIAO , Jinbao ZHANG , Lihua ZHU . PtRu/nitrogen-doped carbon for electrocatalytic methanol oxidation and hydrogen evolution by water electrolysis. Chinese Journal of Inorganic Chemistry, 2024, 40(7): 1357-1367. doi: 10.11862/CJIC.20230350
3. [3]
  Chi Li , Jichao Wan , Qiyu Long , Hui Lv , Ying Xiong . N-Heterocyclic Carbene (NHC)-Catalyzed Amidation of Aldehydes with Nitroso Compounds. University Chemistry, 2024, 39(5): 388-395. doi: 10.3866/PKU.DXHX202312016
4. [4]
  Yunhao Zhang , Yinuo Wang , Siran Wang , Dazhen Xu . Progress in Selective Construction of Functional Aromatics from Nitrogenous Cycloalkanes. University Chemistry, 2024, 39(11): 136-145. doi: 10.3866/PKU.DXHX202401083
5. [5]
  Yongwei ZHANG , Chuang ZHU , Wenbin WU , Yongyong MA , Heng YANG . Efficient hydrogen evolution reaction activity induced by ZnSe@nitrogen doped porous carbon heterojunction. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 650-660. doi: 10.11862/CJIC.20240386
6. [6]
  Xianghai Song , Xiaoying Liu , Zhixiang Ren , Xiang Liu , Mei Wang , Yuanfeng Wu , Weiqiang Zhou , Zhi Zhu , Pengwei Huo . Insights into the greatly improved catalytic performance of N-doped BiOBr for CO₂ photoreduction. Acta Physico-Chimica Sinica, 2025, 41(6): 100055-. doi: 10.1016/j.actphy.2025.100055
7. [7]
  Zhaomei LIU , Wenshi ZHONG , Jiaxin LI , Gengshen HU . Preparation of nitrogen-doped porous carbons with ultra-high surface areas for high-performance supercapacitors. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 677-685. doi: 10.11862/CJIC.20230404
8. [8]
  Fei Liu , Dong-Yang Zhao , Kai Sun , Ting-Ting Yu , Xin Wang . Comprehensive Experimental Design for Photochemical Synthesis, Analysis, and Characterization of Seleno-Containing Medium-Sized N-Heterocycles. University Chemistry, 2024, 39(3): 369-375. doi: 10.3866/PKU.DXHX202309047
9. [9]
  Zhuo Wang , Xue Bai , Kexin Zhang , Hongzhi Wang , Jiabao Dong , Yuan Gao , Bin Zhao . MOF模板法合成氮掺杂碳材料用于增强电化学钠离子储存和去除. Acta Physico-Chimica Sinica, 2025, 41(3): 2405002-. doi: 10.3866/PKU.WHXB202405002
10. [10]
  Ronghui LI . Photocatalysis performance of nitrogen-doped CeO₂ thin films via ion beam-assisted deposition. Chinese Journal of Inorganic Chemistry, 2025, 41(6): 1123-1130. doi: 10.11862/CJIC.20240440
11. [11]
  Hailang JIA , Hongcheng LI , Pengcheng JI , Yang TENG , Mingyun GUAN . Preparation and performance of N-doped carbon nanotubes composite Co₃O₄ as oxygen reduction reaction electrocatalysts. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 693-700. doi: 10.11862/CJIC.20230402
12. [12]
  Min WANG , Dehua XIN , Yaning SHI , Wenyao ZHU , Yuanqun ZHANG , Wei ZHANG . Construction and full-spectrum catalytic performance of multilevel Ag/Bi/nitrogen vacancy g-C₃N₄/Ti₃C₂T_x Schottky junction. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1123-1134. doi: 10.11862/CJIC.20230477
13. [13]
  Jianyu Qin , Yuejiao An , Yanfeng Zhang . In Situ Assembled ZnWO₄/g-C₃N₄ S-Scheme Heterojunction with Nitrogen Defect for CO₂ Photoreduction. Acta Physico-Chimica Sinica, 2024, 40(12): 2408002-. doi: 10.3866/PKU.WHXB202408002
14. [14]
  Kaihui Huang , Dejun Chen , Xin Zhang , Rongchen Shen , Peng Zhang , Difa Xu , Xin Li . Constructing Covalent Triazine Frameworks/N-Doped Carbon-Coated Cu₂O S-Scheme Heterojunctions for Boosting Photocatalytic Hydrogen Production. Acta Physico-Chimica Sinica, 2024, 40(12): 2407020-. doi: 10.3866/PKU.WHXB202407020
15. [15]
  Jinyi Sun , Lin Ma , Yanjie Xi , Jing Wang . Preparation and Electrocatalytic Nitrogen Reduction Performance Study of Vanadium Nitride@Nitrogen-Doped Carbon Composite Nanomaterials: A Recommended Comprehensive Chemistry Experiment. University Chemistry, 2024, 39(4): 184-191. doi: 10.3866/PKU.DXHX202310094
16. [16]
  Hong RAO , Yang HU , Yicong MA , Chunxin LÜ , Wei ZHONG , Lihua DU . Synthesis and in vitro anticancer activity of phenanthroline-functionalized nitrogen heterocyclic carbene homo- and heterobimetallic silver/gold complexes. Chinese Journal of Inorganic Chemistry, 2024, 40(12): 2429-2437. doi: 10.11862/CJIC.20240275
17. [17]
  Jun Huang , Pengfei Nie , Yongchao Lu , Jiayang Li , Yiwen Wang , Jianyun Liu . 丝光沸石负载自支撑氮掺杂多孔碳纳米纤维电容器及高效选择性去除硬度离子. Acta Physico-Chimica Sinica, 2025, 41(7): 100066-. doi: 10.1016/j.actphy.2025.100066
18. [18]
  Qianqian Liu , Xing Du , Wanfei Li , Wei-Lin Dai , Bo Liu . Synergistic Effects of Internal Electric and Dipole Fields in SnNb₂O₆/Nitrogen-Enriched C₃N₅ S-Scheme Heterojunction for Boosting Photocatalytic Performance. Acta Physico-Chimica Sinica, 2024, 40(10): 2311016-. doi: 10.3866/PKU.WHXB202311016
19. [19]
  Mei Yan , Rida Feng , Yerdos·Tohtarkhan , Biao Long , Li Zhou , Chongshen Guo . Expansion and Extension of Liquid Saturated Vapor Measurement Experiment. University Chemistry, 2024, 39(3): 294-301. doi: 10.3866/PKU.DXHX202308103
20. [20]
  Xiaoyan Wang , Chao Wang , Dongmei Dai , Yanling Geng , Hongtao Gao . Design of Ideological and Political Education for the Experiment on Calcium Content Determination in Calcium Supplements. University Chemistry, 2024, 39(2): 162-167. doi: 10.3866/PKU.DXHX202307074

Get Citation

PDF

XML

Metrics

PDF Downloads(5)
Abstract views(2343)
HTML views(167)

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