生物质三组分混合热解耦合作用研究
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摘要
利用热重分析仪,研究不同比例混合的生物质三组分(纤维素、半纤维素和木质素)的热解过程,并将计算热失重曲线与实验热失重曲线进行对比研究,探讨热解过程中三组分之间的相互作用。结果表明:纤维素对半纤维素的热解无明显作用,而足量的纤维素能减少木质素的固体残渣产率;半纤维素能增大纤维素的主要热解温度区间,使纤维素的失重峰向高温侧移动和降低纤维素的失重速率,但对木质素无明显作用;木质素能降低纤维素的失重速率,且较多的木质素能增大半纤维素的失重速率。生物质混合样品的动力学分析结果进一步验证了三组分之间的相互作用。
The characteristic of pyrolysis of the biomass(mixture of cellulose,hemicellulose and lignin) was investigated using a thermogravimetric analyzer. Then,the interaction of three components was studied by contrasting the experimental thermogravimetric curve with the calculated thermogravimetric curve. The result show that there is negligible effect of cellulose to hemicellulose,but sufficient cellulose can reduce the yield of lignin residue.Hemicellulose can influence cellulose in three ways. The first is increasing the major thermogravimetric temperature interval,the second is leading the DTG peak move to high temperature side and the last is reducing the mass loss rate.The effect of hemicelluloses on lignin is unobvious. The presence of lignin can decrease the cellulose mass loss rate,and a large amount of lignin can increase the hemicellulose mass loss rate. The result of kinetic parameters validates the interaction of three components.
The characteristic of pyrolysis of the biomass(mixture of cellulose,hemicellulose and lignin) was investigated using a thermogravimetric analyzer. Then,the interaction of three components was studied by contrasting the experimental thermogravimetric curve with the calculated thermogravimetric curve. The result show that there is negligible effect of cellulose to hemicellulose,but sufficient cellulose can reduce the yield of lignin residue.Hemicellulose can influence cellulose in three ways. The first is increasing the major thermogravimetric temperature interval,the second is leading the DTG peak move to high temperature side and the last is reducing the mass loss rate.The effect of hemicelluloses on lignin is unobvious. The presence of lignin can decrease the cellulose mass loss rate,and a large amount of lignin can increase the hemicellulose mass loss rate. The result of kinetic parameters validates the interaction of three components.
引文
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[18] Wang Shurong, Guo Xiujuan, Wang Kaige, et al.Influence of the interaction of components on thepyrolysis behavior of biomass[J]. Journal of Analyticaland Applied Pyrolysis,2011,91(1):183—189.
[19]胡亿明.木质生物质各组分热解过程和热力学特性研究[D].北京:中国林业科学研究院,2013.[19] Hu Yiming. Pyrolysis process and thermodynamiccharateristics of lignocellulosic biomass components[D]. Beijing:Chinese Academy of Forestry,2013.
[20]陈登宇,张栋,朱锡锋.干燥前后稻壳的热解及其动力学特性[J].太阳能学报,2010,31(10):1230—1235.[20] Chen Dengyu,Zhang Dong,Zhu Xifeng. Research onpyrolysis characteristics and kinetics of the rice huskbefore and after dryness[J]. Acta Energiae SolarisSinica,2010,31(10):1230—1235.
[21] Rao T R,Sharma A. Pyrolysis rates of biomass materials[J]. Energy,1998,23(11):973—978.
[2]胡亿明,蒋剑春,孙云娟,等.纤维素与半纤维素热解过程的相互影响[J].林产化学与工业,2014,34(4):1—8.[2] Hu Yiming, Jiang Jianchun, Sun Yunjuan, et al.Interaction during the pyrolysis process of cellulose andhemicellulose[J]. Chemistry and Forestry of ForestProducts,2014,34(4):1—8.
[3] Yang Haiping,Yan Rong,Chen Hanping,et al. In-depth investigation of biomass pyrolysis based on threemajor components:Hemicellulose,cellulose and lignin[J]. Energy&Fuels,2006,20(1):388—393.
[4] Wang Gang,Li Wen,Li Baoqing,et al. TG study onpyrolysis of biomass and its three components undersyngas[J]. Fuel,2008,87(4-5):552—558.
[5]李小华,焦丽华,樊永胜,等.纤维素木聚糖和木质素含量对生物质热解特性及产物的影响[J].农业工程学报,2015,31(13):236—243.[5] Li Xiaohua,Jiao Lihua,Fan Yongsheng,et al. Effectsof cellulose, xylan and lignin content on biomasspyrolysis characteristics and product distribution[J].Transactions of the Chinese Society of AgriculturalEngineering,2015,31(13):236—243.
[6] Liu Qian, Zhong Zhaoping, Wang Shurong, et al.Interactions of biomass components during pyrolysis:ATG-FTIR study[J]. Journal of Analytical and AppliedPyrolysis,2011,90(2):213—218.
[7] Couhert C,Commandre J M,Salvador S. Is it possibleto predict gas yields of any biomass after rapid pyrolysisat high temperature from its composition in cellulose,hemicellulose and lignin?[J]. Fuel,2009,88(3):408—417.
[8] Worasuwannarak N,Sonobe T,Tanthapanichakoon W.Pyrolysis behaviors of rice straw, rice husk, andcorncob by TG-MS technique[J]. Journal of Analyticaland Applied Pyrolysis,2007,78(2):265—271.
[9] Wu Shiliang,Shen Dekui,Hu Jun,et al. Cellulose-lignin interactions during fast pyrolysis with differenttemperatures and mixing methods[J]. Biomass andBioenergy,2016,90:209—217.
[10] Wu Shiliang,Shen Dekui,Hu Jun,et al. Cellulose-hemicellulose interactions during fast pyrolysis withdifferent temperatures and mixing methods[J]. Biomassand Bioenergy,2016,95:55—63.
[11]辛善志.基于组分的生物质热分解及交互作用机制研究[D].武汉:华中科技大学,2014.[11] Xin Shanzhi. Study on the mechanism of biomasspyrolysis and the interactions based on its components[D]. Wuhan:Huazhong University of Science andTechnology,2014.
[12] Hosoya T,Kawamoto H,Saka S. Solid/liquid-and vapor-phase interactions between cellulose-and lignin-derivedpyrolysis products[J]. Journal of Analytical and AppliedPyrolysis,2009,85(1-2):237—246.
[13]陆强.生物质选择性热解液化的研究[D].合肥:中国科学技术大学,2010.[13] Lu Qiang. Selective fast pyrolysis of biomass[D]. Hefei:University of Science and Technology of China,2010.
[14]王树荣,郑赟,文丽华,等.半纤维素模化物热裂解动力学研究[J].燃烧科学与技术,2006,12(2):105—109.[14] Wang Shurong,Zheng Yun,Wen Lihua,et al. Kineticresearch on pyrolysis of model compound ofhemicellulose[J]. Journal of Combustion Scienc andTechnology,2006,12(2):105—109.
[15]黄娜.生物质三组分热裂解特性及其动力学研究[D].北京:北京化工大学,2007.[15] Huang Na. Study on pyrolysis characteristics andkinetics of three components of biomass[D]. Beijing:Beijing University of Chemical Technology,2007.
[16]刘倩.基于组分的生物质热裂解机理研究[D].杭州:浙江大学,2009.[16] Liu Qian. Biomass pyrolysis mechanism based on themulti-components[D]. Hangzhou:Zhejiang University,2009.
[17] Hosoya T, Kawamoto H, Saka S. Cellulose-hemicellulose and cellulose-lignin interactions in woodpyrolysis at gasification temperature[J]. Journal ofAnalytical and Applied Pyrolysis,2007,80(1):118—125.
[18] Wang Shurong, Guo Xiujuan, Wang Kaige, et al.Influence of the interaction of components on thepyrolysis behavior of biomass[J]. Journal of Analyticaland Applied Pyrolysis,2011,91(1):183—189.
[19]胡亿明.木质生物质各组分热解过程和热力学特性研究[D].北京:中国林业科学研究院,2013.[19] Hu Yiming. Pyrolysis process and thermodynamiccharateristics of lignocellulosic biomass components[D]. Beijing:Chinese Academy of Forestry,2013.
[20]陈登宇,张栋,朱锡锋.干燥前后稻壳的热解及其动力学特性[J].太阳能学报,2010,31(10):1230—1235.[20] Chen Dengyu,Zhang Dong,Zhu Xifeng. Research onpyrolysis characteristics and kinetics of the rice huskbefore and after dryness[J]. Acta Energiae SolarisSinica,2010,31(10):1230—1235.
[21] Rao T R,Sharma A. Pyrolysis rates of biomass materials[J]. Energy,1998,23(11):973—978.