自由落下床中生物质与煤共热解的协同效应对焦油组成的影响

魏立纲; 张丽; 徐绍平

自由落下床中生物质与煤共热解的协同效应对焦油组成的影响

1.
大连理工大学化工学院精细化工国家重点实验室, 辽宁大连 116024;
2.
大连工业大学轻工与化学工程学院, 辽宁大连 116034

基金项目: 国家自然科学基金(50776013);国家高技术研究发展计划(863计划,2008AA05Z407);辽宁省高等学校优秀人才支持计划(2009R10)。

详细信息

通讯作者:
徐绍平, Tel: 0411-84986143, Fax: 0411-83683467, E-mail:huizixu@hotmail.com。

中图分类号: TQ536.1
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出版历程
- 收稿日期: 2011-07-20
- 修回日期: 2011-10-11
- 刊出日期: 2012-05-31

Effect of synergism between biomass and coal during co-pyrolysis in a free fall reactor on tar components

1.
State Key Laboratory of Fine Chemicals, Department of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
2.
Department of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China

Funds: 国家自然科学基金(50776013);国家高技术研究发展计划(863计划,2008AA05Z407);辽宁省高等学校优秀人才支持计划(2009R10)。

摘要

摘要: 利用溶剂萃取-柱层析方法,将自由落下床中豆秸与大雁褐煤共热解以及单种原料热解的液体产品分为沥青烯、酚类、脂肪烃类、芳香烃类和极性物等组分。结果表明,共热解的沥青烯产率为11.4%,低于根据煤和生物质单独热解的质量加权平均计算值19.0%,且芳香性增大;与计算值相比,低分子量的酚类、甲基苯酚、二甲基苯酚及其衍生物的含量提高了5%;而且长侧链的脂肪烃含量减少。共热解焦油的芳香类组分中十氢萘的质量分数是43.37%,但其在单一原料热解焦油中并没有被检测到。热解油分析结果表明,自由落下床生物质与煤快速共热解过程中存在协同效应,其主要原因是,发生氢解和加氢反应。煤与生物质共热解有利于产生低分子量的化合物,改善油品的质量。
- 煤 /
- 生物质 /
- 共热解 /
- 焦油
Abstract: The liquid products from co-pyrolysis of Dayan lignite (DY) and legume straw (LS) and from pyrolysis of the single fuel were classified into asphalts, phenols, aliphatic, aromatics and polar fractions by solvent extraction-column chromatography. Compared with the calculated yield of asphalts, i.e. the mass weighted mean value 19.0% from pyrolysis of the single coal and biomass, the experimental yield from co-pyrolysis decreased to 11.4%, and the aromaticity of the co-pyrolysis asphalts increased. At the same time, the yield of light molecular weight phenols, methylphenol, dimethylphenol and their derivatives increased at about 5% during the co-pyrolysis; while the content of aliphatic hydrocarbons with long chains decreased. The content of decalins was 43.37% in aromatic fraction of the co-pyrolysis tar, whereas it was almost not found in the tars from pyrolysis of the individual fuel. These results verified that the synergy existed during co-pyrolysis of coal and biomass under the experimental conditions. It was contributed to the reactions such as hydropyrolysis and hydrogenation during co-pyrolysis of coal and biomass under the hydrogen atmosphere mainly supplied by biomass pyrolysis. Co-pyrolysis of coal and biomass favors producing low molecular weight compounds and improving the quality of the liquid product.
- coal /
- biomass /
- co-pyrolysis /
- tar

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参考文献(22)

LI C Z. Some recent advances in the understanding of the pyrolysis and gasification behaviour of Victorian brown coal[J]. Fuel, 2007, 86(12/13): 1664-1683.

刘海峰, 刘银河, 刘艳华, 车得福. 煤热解过程中含氮气相产物转化规律的实验研究[J]. 燃料化学学报, 2008, 36(2): 134-138. (LIU Hai-feng, LIU Yin-he, LIU Yan-hua, CHE De-fu. Experimental investigation on the conversion of nitrogenous gas products during coal pyrolysis[J]. Journal of Fuel Chemistry and Technology, 2008, 36(2): 134-138.)

周淑芬, 杨建丽, 刘振宇. 煤热解过程焦中硫的残留及煤中硅、铝、碳的影响[J]. 燃料化学学报, 2010, 38(6): 652-655. (ZHOU Shu-fen, YANG Jian-li, LIU Zhen-yu. Sulfur retention in char during coal pyrolysis and influence of silicon, aluminum and carbon in coal[J]. Journal of Fuel Chemistry and Technology, 2010, 38(6): 652-655.)

尚琳琳, 程世庆, 张海清, 殷炳毅. 生物质与煤共热解时COS的析出特性研究[J]. 煤炭转化, 2007, 30(2): 18-21. (SHANG Lin-lin, CHENG Shi-qing, ZHANG Hai-qing, YIN Bing-yi. Investigation of the characteristics of COS released from coal/ biomass blends during co-pyrolysis[J]. Coal Conversion, 2007, 30(2): 18-21.)

MEESRI C, MOGHTADERI B. Lack of synergetic effects in the pyrolytic characteristics of woody biomass/coal blends under low and high heating rate regimes[J]. Biomass Bioenergy, 2002, 23(1): 55-66.

VUTHALURU H B. Investigations into the pyrolytic behaviour of coal/biomass blends using thermogravimetric analysis[J]. Bioresour Technol, 2004, 92(2): 187-195.

KARACA F, BOLAT E. Coprocessing of a Turkish lignite with a cellulosic waste material: 2 The effect of coprocessing on liquefaction yields at different reaction pressures and sawdust/lignite ratios[J]. Fuel Process Technol, 2002, 75(2): 109-116.

阎维平, 陈吟颖. 生物质混合物与褐煤共热解特性的试验研究[J]. 动力工程,2006, 26(6): 865-870. (YAN Wei-ping, CHEN Yin-ying. Experimental study on co-pyrolysis characteristics of lignite mixed with biomass mixture[J]. Journal of Power Engineering, 2006, 26(6): 865-870.)

ZHANG L, XU S P, ZHAO W, LIU S Q. Co-pyrolysis of biomass and coal in a free fall reactor[J]. Fuel, 2007, 86(3): 353-359.

HAYKIRI-ACMA H, YAMAN S. Synergy in devolatilization characteristics of lignite and hazelnut shell during co-pyrolysis[J]. Fuel, 2007, 86(3): 373-380.

ONAY , BAYRAM E, KOCKAR  M. Copyrolysis of Seyitomer-lignite and Safflower seed: Influence of the blending ratio and pyrolysis temperature on product yields and oil characterization[J]. Energy Fuels, 2007, 21(5): 3049-3056.

SNOBE T, WORASUWANNARAK N, PIPATMANOMAI S. Synergies in co-pyrolysis of Thai lignite and corncob[J]. Fuel Process Technol, 2008, 89(12): 1371-1378.

武宏香, 李海滨, 赵增立. 煤与生物质热重分析及动力学研究[J]. 燃料化学学报, 2009, 37(5): 538-545. (WU Hong-xiang, LI Hai-bin, ZHAO Zeng-li. Thermogravimetric analysis and pyrolytic kinetic study on coal/ biomass blends[J]. Journal of Fuel Chemistry and Technology, 2009, 37(5): 538-545.)

PARK D K, KIM S D, LEE S H, LEE J G. Co-pyrolysis characteristics of sawdust and coal blend in TGA and a fixed bed reactor [J]. Bioresour Technol, 2010, 101(15): 6151-6156.

NIU Y Q, TAN H Z, WANG X B, XU T M. Synergistic effect on co-pyrolysis of capsicum stalks and coal[J]. African J Biotechnol, 2011, 10(2): 174-179.

李世光, 徐绍平, 路庆花, 刘淑琴. 快速热解生物油柱层析分离与分析. 太阳能学报[J]. 2005, 26(4): 549-555. (LI Shi-guang, XU Shao-ping, LU Qing-hua, LIU Shu-qin. Column chromatographic separation of bio-oil from fast pyrolysis of biomass[J]. Acta Energiae Solaris Sinica, 2005, 26(4): 549-555.)

徐绍平, 刘娟, 李世光,刘淑琴, 路庆花. 杏壳热解生物油萃取-柱层析奋力分析和制备工艺[J]. 大连理工大学学报, 2005, 45(4): 505-510. (XU Shao-ping, LIU Juan, LI Shi-guang, LIU Shu-qin, LU Qing-hua. Solvent extraction-column chromatographic separation of bio-oil from fast pyrolysis of apricot stone and manufacture technology[J]. Journal of Dalian University of Technology, 2005, 45(4): 505-510.)

ARIUNAA A, LI B-Q, LI W, PUREVSUREN B, MUNKHJARGAL S, LIU F-R, BAI Z-Q, WANG G. Coal pyrolysis under synthesis gas, hydrogen and nitrogen[J]. J Fuel Chem Technol, 2007, 35(1): 1-4.

KARCZ A, PORADA S A. Formation of C_l-C₃ hydrocarbons during pressure pyrolysis and hydrogasification in relation to structural changes in coal[J]. Fuel, 1995, 74(6): 806-809.

孙云娟, 蒋剑春, 徐俊明, 李琳娜, 戴伟娣, 应浩. 生物质与煤共热解研究现状[J]. 现代化工, 2010, 30(suppl 2): s1-s5. (SUN Yun-juan, JIANG Jian-chun, XU Jun-ming, LI Lin-na, DAI Wei-di, YING Hao. Research status on co-pyrolysis of biomass and coal[J]. Modern Chemical Industry, 2010, 30(suppl 2): s1-s5.)

LAZARO M J, MOLINER R, SUELVES I, HEROD A A, KANDIYOTI R. Characterisation of tars from the co-pyrolysis of waste lubricating oils with coal[J]. Fuel, 2001, 80(2): 179-194.

张素萍, 颜涌捷, 任铮伟, 李庭琛. 生物质快速裂解液体产物的分析[J]. 华东理工大学学报, 2001, 27(6): 666-668. (ZHANG Su-ping, YAN Yong-jie, REN Zheng-wei, LI Ting-shen. Analysis of liquid product obtained by the fast pyrolysis of biomass[J]. Journal of East China University of Science and Technology, 2001, 27(6): 666-668.)

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