Combustion characteristics of coal and coal char from coal topping process

YU Guang-suo; ZHU Qing-rui; XU Shen-qi; HUO Wei; ZHOU Zhi-jie

Volume 40 Issue 05

May 2012

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YU Guang-suo, ZHU Qing-rui, XU Shen-qi, HUO Wei, ZHOU Zhi-jie. Combustion characteristics of coal and coal char from coal topping process[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 513-518.

Citation:

YU Guang-suo, ZHU Qing-rui, XU Shen-qi, HUO Wei, ZHOU Zhi-jie. Combustion characteristics of coal and coal char from coal topping process[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 513-518.

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Combustion characteristics of coal and coal char from coal topping process

Key Laboratory of Ministry of Education for Coal Gasification, East China University of Science and Technology, Shanghai 200237, China

Funds: 国家自然科学基金(20876048);国家重点基础研究发展规划(973计划,2010CB227006)。

Received Date: 2011-07-18
Rev Recd Date: 2011-10-13
Publish Date: 2012-05-31

Abstract

Abstract

A systematic research on the combustion characteristics of Guizhou lignite, Sanjiang coal and Sanjiang char had been done using STA 409C Netzh- thermogravimetric analyzer. The effects of particle diameter and heating rate on maximum mass loss rate, ignition point and combustibility were analyzed. The decrease of particle diameter can reduce the ignition point and improve the combustibility. When particle size is 100～120 mesh and heating rate is 25 ℃/min, the combustibility of samples is the best. The combustion reactions are one-order reaction and kinetics parameters (activation energy E and frequency factor A) were obtained by the method of Coats-Redfern basing on experimental data. Activation energy of Guizhou lignite, Sanjiang coal and Sanjiang char are 100.0～163.6 kJ/mol, 73.4～161.2 kJ/mol, 68.3～178.1 kJ/mol.
- particle diameter,
- combustion,
- ignition point,
- thermogravimetric analysis

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References(15)

References

申春梅, 吴少华, 林伟刚, 宋文立. 煤拔头中低温快速热解烟煤半焦的孔隙结构[J]. 过程工程学报, 2010, 10(3): 522-529. (SHEN Chun-mei, WU Shao-hua, LIN Wei-gang, SONG Wen-li. Pore structure of low temperature and fast pyrolysis bituminous semi-char from coal topping process[J]. The Chinese Journal of Process Engineering, 2010, 10(3): 522-529.)

仝晓波, 申春梅, 吴少华, 林伟刚, 宋文立.煤拔头半焦燃烧特性[J]. 过程工程学报, 2009, 9(5):897-903. (TONG Xiao-bo, SHEN Chun-mei, WU Shao-hua, LIN Wei-gang, SONG Wen-li. Combustion characteristics of char from coal topping process[J]. The Chinese Journal of Process Engineering, 2009, 9(5): 897-903.)

姜秀民, 杨海平, 刘辉, 郑楚光, 刘德昌. 粉煤颗粒粒径对燃烧特性热分析[J]. 中国电机工程学报, 2002, 22(12): 142-146. (JIANG Xiu-ming, YANG Hai-ping, LIU Hui, ZHENG Chu-guang, LIU De-chang. Analysis of the effect of coal powder granularity on combustion characteristics by thermogravimetry[J]. Proceedings of the Chinese Society for Electrical Engineering, 2002, 22(12): 142-146.)

刘辉, 吴少华, 赵广播, 邱鹏华, 秦裕琨. 煤粉粒径对元宝山褐煤燃烧特性的影响[J]. 哈尔滨工业大学学报,2008,40(3):419-422. (LIU Hui, WU Shao-hua, ZHAO Guang-bo, QIU Peng-hua, QIN Yu-kun. Influence of coal particle size on the combustion characteristics of Yuanbaoshan lignite[J]. Journal of Harbin Institute of Technology, 2008, 40(3): 419-422.)

闫力, 赵苗芝, 王利刚, 薛永强. 粒径对煤燃烧和热解动力学影响的量化研究[J]. 煤炭转化, 2010,33(1):40-43. (YAN Li, ZHAO Miao-zhi, WANG Li-gang, XUE Yong-qiang. Effect of particle size on the kinetic parameters of the combustion and pyrolysis of coal by quantum chemistry method[J]. Coal Conversion, 2010, 33(1): 40-43.)

KAJITANI S, SUZUKI N, ASHIZAWA M. CO₂ gasification rate analysis of coal chars in entrained flow coal gasifier[J]. Fuel, 2006, 85(2): 163-169.

LIU H, LUO CH, KATO S. Kinetics of CO₂/Char gasification at elevated temperatures Part: I Experimental results[J]. Fuel process Technol, 2006, 87(9): 775-781.

喻秋梅, 庞亚军, 陈宏国. 煤燃烧试验中着火点确定方法的探讨[J]. 华北电力技术, 2001, (7): 9-11. (YU Qiu-mei, PANG Ya-jun, CHEN Hong-guo. Determination of ignition points in coal-combustion tests[J]. North China Electric Power, 2001, (7): 9-11.)

聂其红, 孙绍增, 李争起, 张晓杰, 吴少华, 秦裕琨. 褐煤混煤燃烧特性的热重分析研究[J]. 燃烧科学与技术, 2001, 7(1): 72-76. (NIE Qi-hong, SUN Shao-zeng, LI Zheng-qi, ZHANG Xiao-jie, WU Shao-hua, QIN Yu-kun. Thermogravimetric analysis on the combustion characteristics of Brown coal blends[J]. Journal of Combustion Science and Technology, 2001, 7(1): 72-76.)

陈晓平, 谷小兵, 段钰峰, 赵长遂. 气化半焦加压着火特性及燃烧稳定性研究[J]. 热能动力工程,2005, 20(2): 153-157. (CHEN Xiao-ping, GU Xiao-bing, DUAN Yu-feng, ZHAO Chang-sui. A study of the ignition characteristics and combustion stability of gasified semi-char under an elevated pressure[J]. Journal of Engineering for Thermal Energy and Power, 2005, 20(2): 153-157.)

周俊虎, 平传娟, 杨卫娟, 刘建忠, 程军, 岑可法. 混煤燃烧反应动力学参数的热重研究[J].中国动力工程学报, 2005, 25(2): 207-210. (ZHOU Jun-hu, PING Chuan-juan, YANG Wei-juan, LIU Jian-zhong, CHENG Jun, CEN Ke-fa. Thermo-gravimetric research on dynamic combustion reaction parameters of blended coals[J]. Chinese Journal of Power Engineering, 2005, 25(2): 207-210.)

沙兴中, 京古. 煤焦着火点与其气化活性的关系[J]. 燃料化学学报, 1991, 19(2): 185-188. (SHA Xing-zhong, JING Gu. The relationship between burning temperature and activity of coal chars[J]. Jonrnal of Fuel Chemistry and Technology, 1991, 19(2): 185-188.)

CUMMING J W. Reactivity assessment of coals via a weighted mean activation energy[J]. Fuel, 1984, 23(10): 1436-1440.

傅维镳. 煤燃烧理论及宏观通用规律[M]. 北京: 清华大学出版社, 2003. (FU Wei-biao. Coal combustion theory and general low[M]. Beijing: Tsinghua University Press, 2003.)

孙学信, 陈建原. 煤粉燃烧物理化学基础[M]. 武汉: 华中理工大学出版社, 1991. (SUN Xue-xin, CHEN Jian-yuan. Physical and chemical basis of pulverized coal combustion[M]. Wuhan: HUST Press, 1991.)

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