Chemical Industry and Engineering Progree ›› 2016, Vol. 35 ›› Issue (01): 105-109.DOI: 10.16085/j.issn.1000-6613.2016.01.014

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Characteristics of low-temperature co-pyrolysis products of ulva and lignite

CHENG Xiaohan1, HE Xuanming1,2, CHAI Jun1, RONG Fei1   

  1. 1 Hubei Coal Conversion and New Carbon Materials Key Laboratory, Wuhan 430081, Hubei, China;
    2 School of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China
  • Received:2015-04-28 Revised:2015-05-14 Online:2016-01-05 Published:2016-01-05

石莼与褐煤低温共热解产物的特性

程晓晗1, 何选明1,2, 柴军1, 容斐1   

  1. 1 煤转化与新型炭材料湖北省重点实验室, 湖北 武汉 430081;
    2 武汉科技大学化学工程与技术学院, 湖北 武汉 430081
  • 通讯作者: 何选明,教授,博士生导师,主要研究方向为煤炭综合利用与绿色煤化工。E-mail:xmingh999@126.com。
  • 作者简介:程晓晗(1990-),女,硕士研究生。E-mail:965919519@qq.com。

Abstract: The low-temperature co-pyrolysis experiments of Australia lignite(AL) blending different proportions of ulva are undertaken. The results show that the amount of pyrolysis oil decreases after a prior increase with the increase of ulva blending ratio, indicating an inhibition effect after first promotion compared with calculated values. When the blending ratio is 30%, the yield of pyrolysis oil rises to 12.5%, an increase of 26.01% to that with pure lignite and reaches the most-positive deviation to the theoretical values. The alkane in co-pyrolysis oil increases by 34.46% in comparison to that with the pure lignite through GC-MS measurements, which improves the quality of pyrolysis oil. Co-pyrolysis chars exhibit depth cracks, improved reactivity and adsorption by the SEM analysis. Co-pyrolysis chars therefore have a wider range of industrial applications.

Key words: ulva, lignite, pyrolysis oil, synergetic effect, upgrading

摘要: 将褐煤添加不等量的石莼进行低温共热解实验,实验表明,随石莼添加量的增加,热解油出现先增加后减少的趋势,与质量加权值相比,出现先促进后抑制的相互作用,当石莼添加30%时热解油产率最高,为12.5%,比纯褐煤时提高了26.01%,与质量加权值的正偏差最大。选取纯褐煤和30%石莼添加量的热解油进行GC-MS检测,共热解油烷烃类含量比纯褐煤增加了34.46%,实现了热解油较大程度的轻质化,两组样的半焦的SEM对比分析,共热解半焦出现了深度龟裂纹,半焦的反应性、吸附性提高,共热解半焦具有更广泛的工业用途。

关键词: 石莼, 褐煤, 热解油, 协同作用, 轻质化

CLC Number: 

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