梧桐木与烟煤混烧的灰分特性分析

胡云鹏; 程世庆; 谢敬思; 程琦雯; 张慧敏

梧桐木与烟煤混烧的灰分特性分析

山东大学能源与动力工程学院, 山东济南 250061

详细信息

通讯作者:
程世庆(1965-), 男, 教授, Tel: 0531-88392264, E-mail: shqcheng@sdu.edu.cn。

中图分类号: TK6
计量
- 文章访问数: 1216
- HTML全文浏览量: 27
- PDF下载量: 724
- 被引次数: 0
出版历程
- 收稿日期: 2011-04-11
- 刊出日期: 2012-03-31

Analysis of the ash characteristic during co-firing of platanewood and bitumite

College of Energy and Power Engineering, Shandong University, Jinan 250061, China

摘要

摘要: 通过SEM/EDS分析、X射线衍射分析和灰熔融性实验对梧桐木与烟煤混烧适宜的灰化温度、灰化时间以及混煤灰的灰分特性进行了研究。研究表明,适宜的灰化时间为2 h,灰化温度则根据不同的梧桐木配比分别选取650、700和800 ℃。随着梧桐木配比的升高,混烧灰中SiO₂和Al₂O₃的含量逐渐降低,而K₂O、CaO和MgO的含量逐渐升高,Na₂O和Fe₂O₃含量的变化,整体维持在较低的水平。当梧桐木配比为30%时,混烧灰中出现钙长石的晶相;当配比为50%时,混烧灰中出现钠长石的晶相,同时莫来石晶相消失,且随着温度的升高混煤灰中结晶相的强度减弱。梧桐木灰中高含量的碱性氧化物与硅铝氧化物所生成的低熔点硅铝酸盐是导致梧桐木混煤灰熔点降低的直接原因。
- 灰分特性分析 /
- 混烧 /
- 晶相 /
- SEM/EDS /
- X射线衍射
Abstract: The appropriate ashing temperature, ashing time and ash characteristics of co-firing of platanewood and bitumite were studied by SEM/EDS analysis, X-ray diffraction and ash fusion experiment. It was found that the appropriate ashing time was 2 h. The ashing temperature should be adopted at 650, 700 and 800 ℃ according to the different proportions of platanewood proportion. With the increasing of platanewood proportion, the SiO₂ and Al₂O₃ contents decrease, but the contents of K₂O, CaO and MgO are the reverse, the Na₂O and Fe₂O₃ contents are at a low level which have no obvious trendy change. Anorthite appears in the ash with the 30% mixture ratio. The albite appears and the mullite disappears with the 50% mixture ratio. The crystalline phase intensity reduces with the increasing of ashing temperature. The aluminosilicate formed by alkali oxides with high content in the platanewood ash and silicon, aluminum oxide is the immediate cause of a low ash fusion point.
- ash characteristic analysis /
- co-combustion /
- crystalline phase /
- SEM/EDS /
- X-ray diffraction(XRD)

HTML全文

参考文献(19)

王爽, 姜秀民, 王宁, 于立军, 李祯, 何培民. 海藻生物质灰熔融特性分析[J]. 中国电机工程学报, 2008, 28(5): 96-101. (WANG Shuang, JIANG Xiu-min, WANG ning, YU Li-jun, LI Zhen, HE Pei-min. Fusing characteristic analysis on seaweed biomass ash[J]. Proceedings of the CSEE, 2008, 28(5): 96-101.)

阎维平, 陈吟颖. 生物质混合物与煤热解的协同特性[J]. 中国电机工程学报, 2007, 27(2): 80-86. (YAN Wei-ping, CHEN Yin-ying. Interaction performance of co-pyrolysis of biomass mixture and coal of different rank.Proceedings of the CSEE, 2007, 27(2): 80-86.)

尚琳琳, 程世庆, 张海清. 生物质与煤共热解特性研究[J]. 太阳能学报, 2006, 27(8): 852-856. (SHANG Lin-lin,CHENG Shi-qing,ZHANG Hai-qing. Experimental study on pyrolysis behaviors of coal and biomass blending[J]. Acta Energiae Solaris Sinica, 2006, 27(8): 852-856.)

ARVELAKIS S, FRANDSEN F J. Melting behavior of ashes from the co-combustion of coal and straw[J]. Energy Fuels, 2007, 21(5): 3004~3009.

THEIS M, SKRIFVARS B-J, HUPA M, TRAN H. Fouling tendency of ash resulting from burning mixtures of biofuels.Part1:Depositionrates[J]. Fuel, 2006, 85(7/8): 1125- 1130.

THEIS M, SKRIFVARS B-J, HUPA M, TRAN H. Fouling tendency of ash resulting from burning mixtures of biofuels.Part 2: Deposition chemistry[J]. Fuel, 2006, 85(14/15): 1992-2001.

MULLER M, WOLF K-J, SMEDA A, HILPERT K. Release of K,Cl and S species during co-combustion of coal and straw[J].Energy Fuels,2006,20(4): 1444-1449.

WEI X, LOPEZ C, von PUTTKAMER T, SCHNELL U, UNTERBERGER S, HEIN K R G. Assessment of chlorine-alkali-mineral interactions during co-combustion of coal and straw[J]. Energy Fuels, 2002, 16(5): 1095-1108.

董信光, 李荣玉, 刘志超, 周新刚, 殷炳毅. 生物质与煤混烧的灰分特性分析[J]. 中国电机工程学报, 2009, 29(26): 118-124. (DONG xin-guang, LI rong-yu, LIU zhi-chao, ZHOU Xin-gang, YIN Bing-yi. Investigation on the ash characteristic during co-firing of coal and biomass[J]. Proceedings of the CSEE, 2009, 29(26): 118-124.)

徐婧, 余春江, 秦建光, 马孝琴, 方梦祥, 骆仲泱, 岑可法. 麦草木素与煤混烧灰熔融特性[J]. 浙江大学学报(工学版), 2007, 41(7): 1186-1190. (XU Jing, YU Chun-jiang, QIN Jian-guang, MA Xiao-qin, FANG Meng-xiang, LUO Zhong-yang, CENG Ke-fa. Ash-fusion characteristics of wheat straw lignin and coal co-combustion[J].Journal of Zhejiang University(Engineering Science), 2007, 41(7): 1186-1190.)

GB/T 212-2008, 煤灰成分分析方法[S]. (GB/T 212-2008, Proximate analysis of coal[S].)

ASTM. Test method for ash in biomass, E1755-01[S]. Philadelphia: American Society for Testing and Materials, 2005.

GRAMMELIS P, SKODRAS G, KAKARAS E. Effects of biomass co-firing with coal on ash properties. Part I: Characterisation and PSD[J]. Fuel, 2006, 85(16): 2310-2315.

秦建光, 余春江, 聂虎, 李双江, 骆仲泱, 岑可法. 生物质灰成分测试中的偏差问题分析[J]. 中国电机工程学报, 2009, 29(8): 97-102. (QIN Jian-guang, YU Chun-jiang, NIE Hu, LI Shuang-jiang, LUO Zhong-yang, CEN Ke-fa. Analysis of deviation in biomass ash compostion[J]. Proceeding of the CSEE, 2009, 29(8): 97-102.)

张军, 范志林, 林晓芬, 徐益谦. 灰化温度对生物质灰特征的影响[J]. 燃料化学学报, 2004, 32(5): 547-551. (ZHANG Jun, FAN Zhi-lin, LIN Xiao-fen, XU Yi-qian. Effect of ashing temperature on the characteristics of biomass ash[J]. Journal of Fuel Chemistry and Technology, 2004, 32(5): 541-551.)

李帆, 邱建荣, 郑瑛, 郑楚光. 煤燃烧过程矿物质行为研究[J]. 工程热物理学报, 1999, 20(2): 258-260. (LI Fan, QIU Jian-rong, ZHENG Ying, ZHENG Chu-guang. Study on behavior of mineral matters in coal during burning process[J]. Journal of Engineering Thermophysics, 1999, 20(2): 258-260.)

刘文胜. 侏罗纪煤的结渣特性、配煤及应用试验研究. 杭州: 浙江大学, 2003. (LIU Wen-sheng. Research on the slagging and blending characteristics and applications of Jurassic coal. Hangzhou: Zhejiang University, 2003.)

岑可法, 池作和. 锅炉和热交换器的积灰、结渣、腐蚀和磨损的防止原理与计算[M]. 北京: 科学出版社, 1993. (CEN Ke-fa, CHI Zuo-he. The prevention principle and calculation of boiler and heat exchanger's fouling, slagging and corrosion[M]. Beijing: Science Press, 1993.)

PRONOBIS M. Evaluation of the influence of biomass co-combustion on boiler furnace slagging by means of fusibility correlations[J]. Biomass Bioenergy, 2005, 28(4): 375-383.

施引文献

资源附件(0)

访问统计