全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

固有矿物质对胜利褐煤热解气态产物生成及其动力学特性影响的实验研究

, PP. 21-27

Keywords: 胜利褐煤,热解,固有矿物质,气体产物,活化能,H/CO

Full-Text   Cite this paper   Add to My Lib

Abstract:

利用固定床反应装置,研究了内蒙古胜利褐煤(SL-raw)及其脱除矿物质煤(SL-HF)热解过程中CO2、CO、CH4和H2生成规律,同时通过动力学回归拟合,得到CO2、CO、CH4和H2生成活化能。矿物质的脱除并不影响热解气CO2、CO、CH4和H2依次生成顺序,对CH4热解生成特性几乎没有影响。SL-HF热解过程中CO2和CO生成温度与SL-raw相比分别降低了107K和168K,其最大生成速率分别提高和降低了17.1%和18.9%,而H2也降低了30.4%。矿物质的存在,有利于胜利褐煤在热解过程中生成CO+H2含量更高的合成气,同时H2/CO提高37%以上。动力学拟合结果表明,SL-raw和SL-HF热解过程中CO2、CO、CH4和H2生成活化能顺序均为:EH2>ECH4>ECO>ECO2,脱除矿物质的SL-HF热解生成CO2、CO和CH4活化能分别降低33.7%、13.1%和16.9%,H2生成活化能增加32.8%,表明胜利褐煤中矿物质在热解过程中抑制了CO2、CO和CH4的生成,却有利于H2的生成。

References

[1]  孙启明,刘立志,张白玉,等.我国内蒙中部褐煤资源绿色开发与区域发展[J].技术经济,2009,28(9):29-34.Sun Qiming,Liu Lizhi,Zhang Baiyu,et al.Green production and regional development on lignite resource in middle inner Mongolia in china[J].Technology economics,2009,28(9):29-34(in Chinese).
[2]  王锋正,郭晓川.内蒙古煤炭资源产业比较优势研究[J].煤炭经济研究,2010,30(3):8-12.Wang Zhengfeng,Guo Xiaochuan.Study on the comparative advantage of Inner Mongolia coal industry [J].Coal Economic Research,2010,30(3):8-12(in Chinese).
[3]  王庆一.中国煤炭工业:演变及前景(上)[J].中国煤炭,2001,27(1):6-35.Wang Qingyi. Coal industry of China:Evolution and prospects(1)[J].China Coal,2001,27(1):6-35(in Chinese).
[4]  Durie R A.The science of Victorian brown coal:structure,properties and consequences for utilization [M].Butterworth-Heinemann,Oxford,1991:19-130.
[5]  邵俊杰.褐煤提质技术现状及我国褐煤提质技术发展趋势初探[J].神华科技,2009,7(2):17-22.Shao Junjie.The development status of lignite quality improvement technology and development trend of china’s lignite quality improvement technology[J].Shen Hua Science and Technology,2009,7(2):17-22(in Chinese).
[6]  戴和武,谢可玉.褐煤利用技术[M].北京:煤炭工业出版社,1998:1-9.Dai Hewu, Xie Keyu.The utilization technology of lignite[M].Beijing:China Coal Industry Publishing House,1998:1-9(in Chinese).
[7]  李春柱(澳).维多利亚褐煤科学进展[M].余江龙,常丽萍,译.北京:化学工业出版社,2009:180-246.Li Chunzhu(Australian). Advances in the science of Victorian brown coal[M].Yu Jinglong, Chang Liping, Translate. Beijing:Chemical Industry Press, 2009:180-246(in Chinese).
[8]  Ahmad T,Awan I A,Nisar J,et al.Influence of inherent minerals and pyrolysis temperature on the yield of pyrolysates of some Pakistani coals[J].Energy Conversion and Management,2009,50(5):1163-1171.
[9]  Wang X L,He R,Chen Y L.Evolution of porous fractal properties during coal devolatilization[J].Fuel,2008,87(6):878-884.
[10]  杨景标,张彦文,蔡宁生.煤热解动力学的单一反应模型和分布活化能模型比较[J].热能动力工程,2010,25(3):301-305.Yang Jingbiao,Zhang Yanwen,Cai Ningsheng.A comparison of a single reaction model with a distributed activation energy one based on coal pyrolysis kinetics [J].Journal of Engineering for Thermal Energy and Power,2010,25(3):301-305(in Chinese).
[11]  刘辉,吴少华,孙锐,等.快速热解褐煤焦的比表面积及孔隙结构[J].中国电机工程学报,2005,25(12):86-90.Liu Hui,Wu Shaohua,Sun Rui,et al.Special area and pore structure of lignite char under the condition of fast pyrolysis[J].Proceedings of the CSEE,2005,25(12):86-90(in Chinese).
[12]  Solomon P R,Fletcher T H,Pugmire R J.Progress in coal pyrolysis[J].Fuel,1993,72(5):587-997.
[13]  Li C Z.Some recent advances in the understanding of the pyrolysis and gasification behaviors of Victorian brown coal[J].Fuel,2007,86(12-13):1664-1683.
[14]  袁帅,陈雪莉,李军,等.煤快速热解固相和气相产物生成规律[J].化工学报,2011,62(5):1382-1388.Yuan Shuai,Chen Xueli,Li Jun,et al.Formations of solid and gas phase products during rapid pyrolysis of coal[J].Chinese Journal of Chemical Industry and Engineering,2011,62(5):1382-1388(in Chinese).
[15]  Yip K,Wu H W,Zhang D K.Effect of inherent moisture in collie coal during pyrolysis due to in-Situ steam gasification[J].Energy & Fuels 2007,21(5):2883-2891.
[16]  Ma S,Hill J 0,Heng S.A kinetic analysis of the pyrolysis of some Australian coals by non-isothermal thermogravimetry[J].Journal of Thermal Analysis,1991,37(6):1161-1177.
[17]  谢克昌.煤的结构与反应性[M].北京:科学出版社,2002:170-180.Xie Kechang.Coal structure and its reactivity [M].Beijing:Science Press,2002:170-180(in Chinese).
[18]  魏砾宏,李润东,李爱民,等.煤粉热解特性实验研究[J].中国电机工程学报,2008,28(26):53-58.Wei Lihong,Li Rundong,Li Aimin,et al.Thermogravimetric analysis on the pyrolysis characteristics of pulverized coal[J].Proceedings of the CSEE,2008,28(26):53-58(in Chinese).
[19]  Sathe C,Pang Y Y,Li C Z.Effects of heating rate and ion-exchangeable cations on the pyrolysis yields from a victorian brown coal[J].Energy & Fuels,1999,13(3):748-755.
[20]  Quyn D M,Wu H W,Li C Z.Volatilisation and catalytic effects of alkali and alkaline earth metallic species during the pyrolysis and gasification of Victorian brown coal.Part I.Volatilisation of Na and Cl from a set of NaCl-loaded samples[J].Fuel,2002,81(2):143-149.
[21]  杨海平,陈汉平,鞠付栋,等.热解条件及煤种对煤焦气化活性的影响[J].中国电机工程学报,2009,29(2):30-34.Yang Haiping,Chen Hanping,Ju Fudong,et al.Influence of pyrolysis condition of coal type on gasification reactivity of charcoal[J].Proceedings of the CSEE,2009,29(2):30-34(in Chinese).
[22]  Zhuang X G,Querol X,Alastuey A,et al.Geochemistry and mineralogy of the Cretaceous Wulantuga high- germanium coal deposit in Shengli coal field,Inner Mongolia,Northeastern China[J].International Journal of Coal Geology,2006,66(1-2):119-136.
[23]  杨景标,蔡宁生.应用TG-FTIR联用研究催化剂对煤热解的影响[J].燃料化学学报,2006,34(6):650-654.Yang Jingbiao,Cai Ningsheng.A TG-FTIR study on catalytic pyrolysis of coal[J].Journal of Fuel Chemistry and Technology,2006,34(6):650-654(in Chinese).
[24]  熊杰,周志杰,许慎启,等.碱金属对煤热解和气化反应速率的影响[J].化工学报,2011,6(1):192-198.Xiong Jie,Zhou Zhijie,Xu Shenqi,et al.Effect of alkali metal on rate of coal pyrolysis and gasification[J].Journal of Chemical Industry and Engineering(China),2011,6(1):192-198(In Chinese).
[25]  Liu Q R,Hu H Q,Zhou Q,et al.Effect of inorganic matter on reactivity and kinetics of coal pyrolysis[J].Fuel,2004,83(6):713-718.
[26]  许凯,胡松,向军,等.胜利褐煤的加压热解特性分析[J].中国电机工程学报,2011,31(29):15-20.Xu Kai,Hu Song,Xiang Jun,et al.Analysis on the behavior of pressurized pyrolysis of Shengli Lignite [J].Proceedings of the CSEE,2011,31(29):15-20(in Chinese).
[27]  Corella J,Toledo J M,Molina G.Steam gasification of coal at low-medium (600~800℃) temperature with simultaneous CO2 capture in fluidized bed at atmospheric pressure:the effect of inorganic species.1.Literature review and comments[J].Industrial & Engineering Chemistry Research,2006,45(18):6137-6146.
[28]  Lemaignen L,Zhuo Y,Reed G P,et al.Factors governing reactivity in low temperature coal gasification. Part II.An attempt to correlate conversions with inorganic and mineral constituents[J].Fuel,2002,81(3):315-326.
[29]  Vejahati F,Xu Z H,Gupta R.Trace elements in coal:Associations with coal and minerals and their behavior during coal utilization-A review[J].Fuel,2010,89(4):904-911.
[30]  Sugano M,Hirano K,Mashimo K.Effects of reaction conditions on the hydrogenolyses of cation exchanged coals[J].Fuel Processing Technology,2004,85(8-10):837-848.
[31]  Watanabe W S,Zhang D K.The effect of inherent and added inorganic matter on low-temperature oxidation reaction of coal[J].Fuel Processing Technology,2001,74(3):145-160.
[32]  Vuthaluru H B,Zhang D K,Linjewile T M.Behaviour of inorganic constituents and ash characteristics during fluidised-bed combustion of several Australian low-rank coals[J].Fuel Processing Technology,2000,67(3):165-176.
[33]  Domazetisa G,Liesegangb J,Jamesa B D.Studies of inorganics added to low-rank coals for catalytic gasification[J].Fuel Processing Technology,2005,86(5):463-486.
[34]  Li X G,Ma B G,Xu L,et al.Catalytic effect of metallic oxides on combustion behavior of high ash coal [J].Energy & Fuels,2007,21(5):2669-2672.
[35]  王俊宏,常丽萍,谢克昌.西部煤的热解特性及动力学研究[J].煤炭转化,2009,32(3):1-5.Wang Junhong,Chang Liping,Xie Kechang.Study on the pyrolysis and kinetics of coal of western China[J].Coal Conversion,2009,32(3):1-5(in Chinese).
[36]  Christiansen J V,Feldthus A,Carlsen L.Flash pyrolysis of coals.Temperature-dependent product distribution[C]// 11th International Symposium on Analytical and Applied Pyrolysis,Nagoya,Japan,1994.
[37]  李凡,张永发,谢克昌.矿物质对煤显微组分热解的影响[J].燃料化学学报,1992,20(3):300-306.Li Fan,Zhang Yongfa,Xie Kechang.Effect of the mineral matter on the pyrolysis reaction of coal macerals [J].Journal of Fuel Chemistry and Technology,1992,20(3):300-306(in Chinese).

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133