微型流化床与热重测定煤焦非等温气化反应动力学对比

doi:10.11949/j.issn.0438-1157.20141677

化工学报 ›› 2015, Vol. 66 ›› Issue (5): 1716-1722.DOI: 10.11949/j.issn.0438-1157.20141677

• 催化、动力学与反应器 • 上一篇下一篇

微型流化床与热重测定煤焦非等温气化反应动力学对比

王芳¹, 曾玺², 王永刚¹, 余剑², 岳君容², 张建岭², 许光文²

1 中国矿业大学(北京)化学与环境工程学院, 北京 100083;
2 中国科学院过程工程研究所多相复杂系统国家重点实验室, 北京 100190

收稿日期:2014-11-12 修回日期:2015-02-02 出版日期:2015-05-05 发布日期:2015-05-05
通讯作者: 曾玺
基金资助:
科技部重大仪器专项(2011YQ120039);国家自然科学基金项目(21306209);中国科学院战略性先导科技专项“低阶煤清洁高效利用关键技术与示范”项目(XDA07050400)。

Comparation of non-isothermal coal char gasification in micro fluidized bed and thermogravimetric analyzer

WANG Fang¹, ZENG Xi², WANG Yonggang¹, YU Jian², YUE Junrong², ZHANG Jianling², XU Guangwen²

1 School of Chemical and Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China;
2 State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

Received:2014-11-12 Revised:2015-02-02 Online:2015-05-05 Published:2015-05-05
Supported by:
supported by the National Instrumentation Program (2011YQ120039), the National Natural Science Foundation of China (21306209), and the “Strategic Priority Research Program” of CAS on Clean and High Efficiency Utilization of Low-Rank Coal (XDA07050400).

摘要/Abstract

摘要： 利用微型流化床反应分析仪(MFBRA)和热重分析仪(TGA)比较煤焦与CO₂的非等温气化反应特性,并利用单一升温速率法和组合升温速率法计算反应动力学数据。结果表明:升温速率对半焦非等温气化过程有重要影响,随着升温速率的增大,起始反应温度和最大反应速率对应的气化温度增加,同一气化温度下的碳转化率降低,而且利用单一升温速率法求取气化反应的活化能逐渐减小。与TGA相比,同一升温速率下,MFBRA中半焦气化反应的起始反应温度和最大反应速率对应的反应温度明显较小,而且升温速率越大差异越显著。无论是单一升温速率法(升温速率≥5℃·min^-1)还是组合升温速率法,TGA测得的动力学数据均明显小于MFBRA测得的动力学数据。高升温速率下(升温速率≥5℃·min^-1)半焦在TGA和MFBRA中非等温气化行为和动力学数据的差异很可能与MFBRA内较好的热量传递和受扩散的抑制作用较小有关。

关键词: 微型流化床, 热重, 半焦, 气化, 反应动力学, 非等温反应, 数值分析

Abstract: The non-isothermal gasification behavior of coal char with CO₂ was comparatively studied in the newly developed micro fluidized bed reaction analyzer (MFBRA) and a commercial thermogravimetric analyzer (TGA). The reaction kinetics data were calculated according to the methods of single heating rate and combination heating rate. The experimental data demonstrated that heating rate had obvious influence on coal char gasification. Increasing heating rate evidently increased reaction initiation temperature (T_x_≈0), and reaction temperature corresponding to the maximum reaction rate (T_Rmax), but it gradually decreased char conversion at a given temperature and the activation energy estimated by the method of single heating rate. Comparing the results from TGA and MFBRA at the same heating rate clarified that both T_x_≈0 and T_Rmax were relatively lower for MFBRA, and the higher the heating rate, the larger the difference between MFBRA and TGA. The measurement using MFBRA led to higher activation energy for char-CO₂ gasification, no matter the adopted estimation method of single heating rate (≥5℃·min^-1) or combination heating rate. The difference in kinetics data tested by TGA and MFBRA at higher heating rate (≥5℃·min^-1) could be much related to better heat transfer and lower diffusion inhibition.

Key words: micro fluidized bed, thermogravimetric analyzer, char, gasification, reaction kinetics, non-isothermal reaction, numerical analysis

中图分类号:

TQ546

王芳, 曾玺, 王永刚, 余剑, 岳君容, 张建岭, 许光文. 微型流化床与热重测定煤焦非等温气化反应动力学对比[J]. 化工学报, 2015, 66(5): 1716-1722.

WANG Fang, ZENG Xi, WANG Yonggang, YU Jian, YUE Junrong, ZHANG Jianling, XU Guangwen. Comparation of non-isothermal coal char gasification in micro fluidized bed and thermogravimetric analyzer[J]. CIESC Journal, 2015, 66(5): 1716-1722.

参考文献 21

[1]	Jing Xuliang (景旭亮), Wang Zhiqing (王志青), Yu Zhongliang (余钟亮), Fang Yitian (房倚天). Multi-circulated gasification reactivity of coal char and its microstructure analysis [J]. Journal of Fuel Chemistry and Technology (燃料化学学报), 2013, 41 (8): 917-921
[2]	Xu Chunxia (徐春霞), Xu Zhengang (徐振刚), Bu Xuepeng (步学鹏), Ji Xuguo (戢绪国). Review of study on gasification characteristic of coal char with carbon dioxide and steam [J].Clean Coal Technology (洁净煤技术), 2007, 13 (6): 49-52
[3]	Ren Haijun (任海君), Zhang Yongqi (张永奇), Fang Yitian (房倚天), Huang Jiejie (黄戒介), Wang Yang (王洋). Effect of minerals in lignite char on kinetics of steam gasification [J]. Chemical Engineering (China) (化学工程), 2010, 38 (10): 132-135
[4]	Lua A C, Su J C. Isothermal and non-isothermal pyrolysis kinetics of Kapton polyimide [J]. Polymer Degradation and Stability, 2006, 91 (1): 144-153
[5]	Zhou Zhijie (周志杰), Fan Xiaolei (范晓雷),Zhang Wei (张薇),Wang Fuchen (王辅臣), Yu Zunhong (于遵宏). Char gasification kinetics using non-isothermal TGA [J]. Journal of China Coal Society (煤炭学报),2006,31 (2):219-222
[6]	Ding Hua (丁华), Jiang Ying (姜英), Chen Yafei (陈亚飞),Li Wenhua (李文华). Experimental study on gasification kinetics of Lu' an coal char with steam by non-isothermal thermo gravimetry [J]. Journal of China Coal Society (煤炭学报), 2010, 35 (4): 666-669
[7]	Pooya L, Zainal A Z, Abdua R M, Maedeh M. CO2 gasification reactivity of biomass char: catalytic influence of alkali, alkaline earth and transition metal salts [J]. Bioresource Technology, 2013, 144: 288-295
[8]	Xiang Yinhua (向银花), Wang Yang (王洋), Zhang Jianmin (张建民), Zhang Shouyu (张守玉), Fang Yitian (房倚天), Dong Zhongbing (董众兵). Kinetic on steam gasification of partially gasified char [J]. Journal of Chemical Industry and Engineering (China) (化工学报), 2003, 54 (3): 368-373
[9]	Zhang Linxian (张林仙), Huang Jiejie (黄戒介),Fang Yitian (房倚天), Wang Yang (王洋). Study on reactivity of Chinese anthracite chars gasification: comparison of reactivity between steam and CO2 gasification [J]. Journal of Fuel Chemistry and Technology (燃料化学学报), 2006, 34 (3): 265-269
[10]	Lin Shanjun (林善俊),Zhou Zhijie (周志杰), Huo Wei (霍威), Ding Lu (丁路), Yu Guangsuo (于广锁). Effect of internal diffusion on steam gasification reactivity of coal and petroleum coke [J]. Journal of Fuel Chemistry and Technology (燃料化学学报), 2014, 42 (8): 905-912
[11]	Yu J, Yue J R, Xu G W, Sun L X. Kinetics and mechanism of solid reactions in a micro fluidized bed reactor [J]. AIChE J., 2010, 56 (11): 2905-2912
[12]	Yu J, Zeng X, Zhang J W, Zhong M, Zhang G Y,Wang Y, Xu G W. Kinetics and mechanism of direct reaction between CO2 and Ca(OH)2 in micro fluidized bed [J]. Science & Techonlogy, 2013, 47 (13): 7514-7520
[13]	Zeng X,Wang F,Wang Y G,Yu J,Xu G W. Characterization of char gasification in a micro fluidized bed reaction analyzer [J]. Energy & Fuel, 2014, 28 (3): 1838-1845
[14]	Song Xingfu (宋兴福), Wang Jin (汪瑾), Luo Yan (罗妍), Liu Gousheng (刘够生), Yu Jianguo (于建国). Thermal decompsition and non-isothermal kinetic evaluation of magnesium chloride hex ammoniate [J]. Journal of Chemical Industry and Engineering (China) (化工学报), 2008, 59 (9): 2255-2259
[15]	Ma Chuan (马川), Sun Lushi (孙路石), Jin Limei (金立梅), Xiang Jun (向军), Hu Song (胡松), Su Sheng (苏胜). Pyrolysis kinetics modeling of flame retarded HIPS [J]. CIESC Journal (化工学报), 2014, 65 (9): 3479-3484
[16]	Zhang Baosheng (张保生) , Liu Jianzhong (刘建忠) , Zhou Junhu (周俊虎), Cen Kefa (岑可法). New model-free method based approach to mechanism of limestone decomposition [J]. Journal of Chemical Industry and Engineering (China) (化工学报), 2007, 58 (5): 1204-1209
[17]	Wang Fang (王芳),Zeng Xi (曾玺),Liu Yunyi (刘云义), Yu Jian (余剑),Xu Guangwen (许光文). Comparation of char gasification kinetics studied by micro fluidized bed and by thermo gravimetric analyzer [J]. Journal of Fuel Chemistry and Technology (燃料化学学报), 2013, 41 (4): 407-413
[18]	Slopiecka K, Bartocci P, Fantozzi F. Thermogravimetric analysis and kinetic study of poplar wood pyrolysis [J]. Applied Energy, 2012, 97: 491-497
[19]	Zhang Qian (张乾), Li Qingfeng (李庆峰), Zhang Linxian (张林仙), Jing Xuliang (景旭亮), Yu Zhongliang (余钟亮), Song Shuangshuang (宋双双), Wang Zhiqing (王志青), Fang Yitian (房倚天). Experimental study on co-pyrolsysis/gasification of deoiled asphalt with different rank of coal [J]. Journal of Fuel Chemistry and Technology (燃料化学学报), 2014, 42 (4): 392-398
[20]	Liu Z S, Wang Q, Zou Z S, Tan G L. Arrhenius parameters determination in non-isothermal conditions for the uncatalyzed gasification of carbon by carbon dioxide [J]. Thermochimica Acta, 2011, 512 (1): 1-4
[21]	Xu Min (许敏), Yan Guihuan (闫桂焕), Liu Zhenxian (刘贞先), Wang Jianmei (王建梅), Sun Rongfeng (孙荣峰), Tian Yongchun (田永春). Research on gasification characteristic of corncob char with CO2 using non-isothermal TGA [J]. Acta Energiae Solaris Sinica (太阳能学报), 2012, 33 (6): 887-892

微型流化床与热重测定煤焦非等温气化反应动力学对比

Comparation of non-isothermal coal char gasification in micro fluidized bed and thermogravimetric analyzer

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