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

WEI Li-gang; ZHANG Li; XU Shao-ping

Volume 40 Issue 05

May 2012

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(05): 519-525

WEI Li-gang, ZHANG Li, XU Shao-ping. Effect of synergism between biomass and coal during co-pyrolysis in a free fall reactor on tar components[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 519-525.

Citation:

WEI Li-gang, ZHANG Li, XU Shao-ping. Effect of synergism between biomass and coal during co-pyrolysis in a free fall reactor on tar components[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 519-525.

Citation:

PDF( 423 KB)

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)。

Received Date: 2011-07-20
Rev Recd Date: 2011-10-11
Publish Date: 2012-05-31

Abstract

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

FullText(HTML)

References(22)

References

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.)

Relative Articles

Supplements(0)

Cited By

Proportional views