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生物质化学工程 ›› 2017, Vol. 51 ›› Issue (6): 38-42.doi: 10.3969/j.issn.1673-5854.2017.06.007

• 研究报告 • 上一篇    下一篇

生物质焦CO2高温气化反应动力学研究

袁聪聪1,2,3, 王宇栋1,2,3, 张丁川1,2,3, 杨斌1,2,3, 戴永年1,2,3   

  1. 1. 真空冶金国家工程实验室, 云南 昆明 650093;
    2. 省部共建复杂有色金属资源清洁利用国家重点实验室, 云南 昆明 650093;
    3. 昆明理工大学 冶金与能源工程学院, 云南 昆明 650093
  • 收稿日期:2016-10-27 出版日期:2017-11-30 发布日期:2017-12-08
  • 通讯作者: 王宇栋,讲师,博士,从事化工、冶金及材料领域研究;E-mail:584772219@qq.com。 E-mail:584772219@qq.com
  • 作者简介:袁聪聪(1988-),女,江苏丰县人,硕士,主要从事生物质热解气化过程及其动力学的研究工作
  • 基金资助:
    云南省院士自由探索基金(2015HA016,2016HA011)

Kinetic Study on Biomass Char CO2 Gasification at High Temperature

YUAN Congcong1,2,3, WANG Yudong1,2,3, ZHANG Dingchuan1,2,3, YANG Bin1,2,3, DAI Yongnian1,2,3   

  1. 1. National Engineering Laboratory for Vacuum Metallurgy, Kunming 650093, China;
    2. State Key Laboratory of Complex Non-ferrous Metal Resources Clear Utilization, Kunming 650093, China;
    3. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
  • Received:2016-10-27 Online:2017-11-30 Published:2017-12-08

摘要: 利用同步热分析仪,采用程序升温法研究了生物质焦CO2气化反应速率特性,主要考察了升温速率对生物质焦气化反应性的影响,并用Friedman-Reich-Levi法对其动力学参数进行了计算。结果表明:DTG曲线峰值温度和最大反应速率随着升温速率的增大而增大;以二氧化碳作保护气,改变升温速率,当升温速率为15 ℃/min时,热解得到的生物质焦的反应活性最好,即气化速率最快;升温速率越大,反应速率随着温度的变化越明显;生物质焦气化阶段的活化能在-4 984.41~1 408.39 kJ/mol之间变化,气化的反应过程复杂。

关键词: 生物质颗粒, 二氧化碳, 程序升温法, 气化, 热分析动力学, Friedman-Reich-Levi法

Abstract: The kinetics of biomass char CO2 gasification reactivity at high temperature was investigated via the temperature-programmed thermogravimetry with thermal analyzer, the influence of heating rates on gasification reactivity was studied and the kinetic parameters were calculated by Friedman-Reich-Levi method. The results showed that along with the increase of heating rate, the peak temperature of DTG curves and the maximum reaction rates increased. With carbon dioxide as shielding gas, changing the heating rate to 15 ℃/min, pyrolysis biomass char owned the best reactivity. The higher the heating rate was, the more obvious the reaction rate changed with the temperature. The activation energies of biomass char gasification stage were -4 984.41-1 408.39 kJ/mol, which indicated biomass char CO2 gasification reaction process was complicated.

Key words: biomass particles, carbon dioxide, temperature-programmed thermogravimetry, gasification, thermal analysis kinetics, Friedman-Reich-Levi method

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