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有氧烘焙对生物质气化及碱金属迁移转化特性的影响

开兴平 朱景博 杨天华 王乐生 王熙雯 李秉硕 邢万丽

开兴平, 朱景博, 杨天华, 王乐生, 王熙雯, 李秉硕, 邢万丽. 有氧烘焙对生物质气化及碱金属迁移转化特性的影响[J]. 燃料化学学报(中英文), 2024, 52(1): 9-18. doi: 10.19906/j.cnki.JFCT.2023064
引用本文: 开兴平, 朱景博, 杨天华, 王乐生, 王熙雯, 李秉硕, 邢万丽. 有氧烘焙对生物质气化及碱金属迁移转化特性的影响[J]. 燃料化学学报(中英文), 2024, 52(1): 9-18. doi: 10.19906/j.cnki.JFCT.2023064
KAI Xingping, ZHU Jingbo, YANG Tianhua, WANG Lesheng, WANG Xiwen, LI Bingshuo, XING Wanli. Effects of oxidative torrefaction on biomass gasification and alkali metal release and transformation characteristics[J]. Journal of Fuel Chemistry and Technology, 2024, 52(1): 9-18. doi: 10.19906/j.cnki.JFCT.2023064
Citation: KAI Xingping, ZHU Jingbo, YANG Tianhua, WANG Lesheng, WANG Xiwen, LI Bingshuo, XING Wanli. Effects of oxidative torrefaction on biomass gasification and alkali metal release and transformation characteristics[J]. Journal of Fuel Chemistry and Technology, 2024, 52(1): 9-18. doi: 10.19906/j.cnki.JFCT.2023064

有氧烘焙对生物质气化及碱金属迁移转化特性的影响

doi: 10.19906/j.cnki.JFCT.2023064
基金项目: 国家自然科学基金(5220061715),辽宁省自然科学基金(2022-BS-215)和辽宁省"兴辽英才计划"(XLYC200512)项目资助
详细信息
    通讯作者:

    E-mail: thyang@sau.edu.cn

  • 中图分类号: TK6

Effects of oxidative torrefaction on biomass gasification and alkali metal release and transformation characteristics

Funds: The project was supported by the National Natural Science Foundation of China (5220061715), Natural Science Foundation of Liaoning Province (2022-BS-215) and LiaoNing Revitalization Talents Prograrm (XLYC200512).
  • 摘要: 本工作研究了有氧烘焙对玉米秸秆组成成分、烘焙产率、化学结构及微观结构等理化特性及气化特性的影响,同时考察了玉米秸秆烘焙及气化过程中碱金属的迁移转化规律。结果表明,烘焙可有效提高玉米秸秆中固定碳含量,降低H/C、O/C。相较于惰性烘焙,有氧烘焙具有更好的提质效果,结合H/C、O/C、质量产率和能量产率发现,氧气体积分数为6%时较合适。烘焙玉米秸秆气化气中CO含量、气体产率及热值随烘焙气氛中氧气含量的增加呈先上升后下降的趋势,在氧气体积分数为6%时气化品质相对较好,此时气体组分中CO体积分数为14.73%、气体产率达到1.09 L/g、气体热值达到4.93 MJ/m3。烘焙过程中碱金属在玉米秸秆中富集,并促进部分水溶态钾向醋酸铵溶态钾转化,有助于气化过程中生成更多不溶态钾,且有氧烘焙促进作用更明显。研究结果可为生物质有氧烘焙提质及气化产气的技术推广提供基础数据及技术支持。
  • FIG. 2875.  FIG. 2875.

    FIG. 2875.  FIG. 2875.

    图  1  生物质气化实验系统示意图

    Figure  1  Biomass gasification reaction system

    图  2  不同氧气体积分数下烘焙玉米秸秆的H/C、O/C比值

    Figure  2  H/C, O/C of torrefied corn straw with different oxygen concentrations

    图  3  不同氧气体积分数下烘焙玉米秸秆的质量产率、能量产率及能量密度

    Figure  3  Solid yield, energy yield and energy density of torrefied corn straw with different oxygen concentration

    图  4  不同氧气体积分数下烘焙玉米秸秆的FT-IR谱图

    Figure  4  FT-IR spectra of torrefied corn straw with different oxygen concentration

    图  5  不同氧气体积分数下烘焙玉米秸秆的SEM照片(260 ℃,1000×)

    Figure  5  SEM images of torrefied corn straw with different oxygen concentration (260 ℃, 1000×)

    图  6  不同氧气体积分数下烘焙玉米秸秆的气化产物分布

    Figure  6  Gasification production of the torrefied corn straw with different oxygen concentration

    图  7  不同氧气体积分数下烘焙玉米秸秆气化产气特性

    Figure  7  Gas production characteristics of torrefied corn straw gasification with different oxygen concentration

    图  8  烘焙气氛对玉米秸秆烘焙过程中碱金属钾析出迁移特性的影响

    Figure  8  Effects of torrefaction atmosphere on the release and transformation characteristics of alkali metal potassium during the torrefaction of corn straw

    图  9  烘焙气氛对玉米秸秆气化过程中碱金属钾析出迁移特性的影响

    Figure  9  Effects of torrefaction atmosphere on the release and transformation characteristics of alkali metal potassium during the gasification of corn straw

    表  1  玉米秸秆的物性参数

    Table  1  Physical parameters of corn straw

    SampleProximate analysis wad/% Ultimate analysis w/%QHHV/(MJ·kg−1)
    VaAaFCaMaCHNO*
    CS 79.19 2.92 8.35 9.54 47.99 6.67 0.98 44.36 17.30
    TCS-0 75.99 3.89 16.62 3.50 51.32 5.65 0.99 42.04 19.90
    TCS-2 73.68 4.03 18.23 4.06 53.16 5.80 0.79 40.25 19.94
    TCS-4 65.88 4.43 25.49 4.20 54.77 5.40 1.29 38.54 21.26
    TCS-6 67.51 4.65 24.23 3.61 55.82 5.24 1.59 37.36 22.15
    TCS-8 73.41 5.17 17.84 3.58 52.38 5.14 0.89 41.59 21.40
    TCS-10 75.43 5.49 15.71 3.37 51.37 4.72 0.32 43.58 20.16
    O*: calculated by difference.
    下载: 导出CSV

    表  2  玉米秸秆组成成分

    Table  2  Composition content of corn straw

    SampleContent/%
    hemicellulosescelluloselignin
    CS23.9535.8825.35
    TCS-018.0133.6625.10
    TCS-216.1232.7123.98
    TCS-414.4631.5224.33
    TCS-613.0731.9524.78
    TCS-811.3329.425.04
    TCS-1010.9228.2724.69
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-04-10
  • 修回日期:  2023-05-27
  • 录用日期:  2023-06-10
  • 网络出版日期:  2023-09-18
  • 刊出日期:  2024-01-09

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