煤炭转化2017，Vol.40Issue(2)：29-35,41,8.
甘蔗渣与褐煤低温共热解产物特性分析
Analysis of Low-temperature Co-pyrolysis Product of Sugarcane Bagasse and Lignite
李翠华 1何选明 1易霜 1李冲 1徐雅迪 1张慧娟1
作者信息
- 1. 武汉科技大学化学工程与技术学院,武汉科技大学湖北省煤转化与新型炭材料重点实验室,430081 武汉
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摘要
Abstract
Low-temperature co-pyrolysis of lignite and sugarcane bagasse(SB) was undertaken in a homemade carbonization apparatus to study the effect of different SB ratio on pyrolysis characteristics in lignite.The results show that with the increase of SB blending ratio,the pyrolysis tar yield shows a trend of decrease after the first increase,and the peak value is 16.7％ when the blending ratio of SB is 20％ (mass fraction,the same below),which is 13.7％ higher than that of lignite pyrolysis alone,and shows the maximum positive deviation of 0.57％ to the calculated value of tar yield.The date analysis of lignite,SB and the blend was studied by caloricity analyzer.Results show that co-pyrolysis is conducive to the centralization of energy in lignite and bagasse,and the heat value of co-pyrolysis semicoke is higher than that of lignite pyrplysis alone.FTIR indicates that the addition of SB can promote the decomposition and fracture of —OH and —CH3 functional groups in lignite,and carboxyl functional groups in SB can be transferred to the tar in the form of other oxygen-containing functional groups,which is conducive to the conversion of heavy components in tar to the light ones.Thermogravimetric analysis shows that the pyrolysis process is divided into three stages and the presence of SB has a significant effect on the stage of rapid pyrolysis,the maximum weight loss rate of lignite increases by 8.96％ and the pyrolysis temperature corresponding to the maximum loss rate decreases by 98.8 ℃.The addition of SB facilitates the pyrolysis reaction to a certain extent.关键词
褐煤/生物质/共热解/焦油/半焦Key words
lignite/biomass/co-pyrolysis/tar/semicoke分类
化学化工引用本文复制引用
李翠华,何选明,易霜,李冲,徐雅迪,张慧娟..甘蔗渣与褐煤低温共热解产物特性分析[J].煤炭转化,2017,40(2):29-35,41,8.
