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过程工程学报 ›› 2016, Vol. 16 ›› Issue (3): 438-444.DOI: 10.12034/j.issn.1009-606X.215372

• 过程与工艺 • 上一篇    下一篇

裂殖壶藻与煤混合热解特性及动力学分析

王亚兵 郝小红 殷海 马溢 崔国民   

  1. 上海理工大学能源与动力工程学院 上海理工大学能源与动力工程学院 上海理工大学能源与动力工程学院 上海理工大学能源与动力工程学院 上海理工大学能源与动力工程学院
  • 收稿日期:2015-10-29 修回日期:2016-01-26 出版日期:2016-06-20 发布日期:2017-04-28
  • 通讯作者: 王亚兵

Pyrolysis Characteristics and Kinetics of Schizochytrium-Coal Mixture

WANG Ya-bing HAO Xiao-hong YIN Hai MA Yi CUI Guo-min   

  1. School of Energy and Power Engineering，University of Shanghai for Science and Technology School of Energy and Power Engineering，University of Shanghai for Science and Technology School of Energy and Power Engineering，University of Shanghai for Science and Technology School of Energy and Power Engineering，University of Shanghai for Science and Technology School of Energy and Power Engineering，University of Shanghai for Science and Technology
  • Received:2015-10-29 Revised:2016-01-26 Online:2016-06-20 Published:2017-04-28
  • Contact: WANG Ya-bing

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摘要： 采用热重法(TGA)研究裂殖壶藻与煤混合的热解特性及混合热解过程的相互影响. 结果表明，煤和微藻的DTG曲线半峰宽分别为225和68℃，挥发分析出的起始温度分别为225和183℃. 可见煤挥发分析出较慢，温度区间较宽. 混合物中随微藻含量增大，挥发分综合特性释放指数逐渐增大，样品热解活性增强. 微藻与煤混合热解过程相互影响程度与样品比例有关. 当煤/藻质量比为1:1时，最大失重速率的计算值与测量值相差0.83%/min，两者在热解过程中存在一定的抑制作用；当煤/藻质量比为3:1和1:3时，两者相互影响不明显. 利用Coats-Redfern法分析热解过程符合一级反应动力学模型.

关键词: 裂殖壶藻, 煤, 热重分析, Coats-Redfern法, 混合热解

Abstract: Pyrolysis process of schizochytrium-coal blends was studied by thermo-gravimetric analysis (TGA) to search the pyrolysis characteristics and interaction in the process of co-pyrolysis. The results showed that the peak width at half height of DTG curves of microalgae and coal were 225 and 68℃ respectively, and the starting temperature of devolatilization were 225 and 183℃ respectively, thus, the devolatilization of coal was slower and occurred over a wider temperature range. With the increase of the content of microalgae in blends, the release index of comprehensive characteristics of volatile D and the activity increased gradually. The interaction between microalgae and coal was related to the proportion of the sample. When the mass ratio of coal to algae was 1:1, the difference between the calculated value and the measured value of the maximum weight loss rate was 0.83%/min, which was inhibited in the process of pyrolysis. When the mass ratio of coal to algae was 3:1 or 1:3, the interaction was not obvious. The pyrolysis kinetics were investigated by Coats-Redfern integral method, and the results showed that the processes could be simplified as a first-order reaction.

Key words: schizochytrium, coal, thermogravimetric analysi, Coats-Redfern method, co-pyrolysis

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