Effect of biomass on ash fusion characteristics of Husheng lignite

doi:10.16085/j.issn.1000-6613.2015.03.019

Chemical Industry and Engineering Progree ›› 2015, Vol. 34 ›› Issue (3): 710-714,719.DOI: 10.16085/j.issn.1000-6613.2015.03.019

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Effect of biomass on ash fusion characteristics of Husheng lignite

LI Zhenzhu^1,2, LI Fenghai^1,2, MA Xiuwei², MA Mingjie¹, XUE Zhaomin²

1. School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, China;
2. Department of Chemistry and Chemical Engineering, Heze University, Heze 274000, Shandong, China

Received:2014-09-01 Revised:2014-10-08 Online:2015-03-05 Published:2015-03-05

生物质对呼盛褐煤灰熔融特性的影响

李振珠^1,2, 李风海^1,2, 马修卫², 马名杰¹, 薛兆民²

1. 河南理工大学材料科学与工程学院, 河南焦作 454000;
2. 菏泽学院化学化工系, 山东菏泽 274000

通讯作者: 李风海,博士,副教授,研究方向为能源化工。E-mail:qflfh74@163.com。
作者简介:李振珠(1986-),男,硕士研究生。E-mail:lizhenzhu870129@163.com。
基金资助:
中国科学院战略性先导科技专项(XDA07050103)及煤炭转化国家重点实验室开放项目(J12-13-102)

Abstract

Abstract: Ash fusion characteristics are very important to co-gasification of biomass and coal. To study the effects of biomass on ash fusion temperatures(AFTs) of lignite, the mixtures of peanut shells, corn straw and pine wood chips with Husheng lignite at different mass ratios were investigated. The trend of AFTs change of mixtures was examined on an intelligent ash fusion analyzer. X-ray fluorescence spectrometer (XRF) and X-ray diffract-meter (XRD) were used to analyze the reason causing AFTs change. Three kinds of biomass all could make the AFTs of Husheng lignite decrease to some extent, which was related to ash content and ash composition of the mixtures. A non-linear relationship was shown between the mixing proportion and AFTs of mixtures. The formation of mullite in mixed ashes (peanut shell or corn straw with Husheng lignite) resulted in fluctuation of the trend of AFTs change. For the mixed sample of pine wood chips and Husheng lignite, the decrease of kyanite with a high melting point (MP), the increase of anorthite with a low MP, and the generation of low MP leucite and augite led to the decrease of AFTs.

Key words: biomass, Husheng lignite, ash fusion characteristics

摘要： 灰熔融特性对煤与生物质共气化意义重大。为探索生物质对褐煤灰熔融特性的影响规律, 向呼盛褐煤中分别加入不同质量比例的花生壳、玉米秸秆和松木屑, 采用ALHR-2型智能灰熔点测定仪对混合灰样的灰熔点进行了测定, X射线荧光仪(XRF)和X射线衍射仪(XRD)分析了灰熔融特性变化的原因。结果表明生物质能够在一定程度上降低呼盛褐煤的灰熔融温度, 这与生物质灰分含量以及混合灰样化学组成有关, 且生物质掺混比例与混合灰熔融特征温度呈现非线性关系;莫来石的生成和消失使花生壳与呼盛褐煤混合灰样和玉米秸秆与呼盛褐煤混合灰样的灰熔融特征温度出现了波动;高熔点硅线石含量的降低、低熔点钙长石含量的增加、以及低熔点白榴石和斜辉石的生成导致了松木屑与呼盛褐煤混合样灰熔融特征温度降低。

关键词: 生物质, 呼盛褐煤, 灰熔融特性

CLC Number:

TQ531.9

LI Zhenzhu, LI Fenghai, MA Xiuwei, MA Mingjie, XUE Zhaomin. Effect of biomass on ash fusion characteristics of Husheng lignite[J]. Chemical Industry and Engineering Progree, 2015, 34(3): 710-714,719.

李振珠, 李风海, 马修卫, 马名杰, 薛兆民. 生物质对呼盛褐煤灰熔融特性的影响[J]. 化工进展, 2015, 34(3): 710-714,719.

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Effect of biomass on ash fusion characteristics of Husheng lignite

生物质对呼盛褐煤灰熔融特性的影响

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