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熔融盐对重质生物油再热解影响的研究

陈涛 罗泽军 王储 朱锡锋

陈涛, 罗泽军, 王储, 朱锡锋. 熔融盐对重质生物油再热解影响的研究[J]. 燃料化学学报. doi: 10.1016/S1872-5813(22)60068-9
引用本文: 陈涛, 罗泽军, 王储, 朱锡锋. 熔融盐对重质生物油再热解影响的研究[J]. 燃料化学学报. doi: 10.1016/S1872-5813(22)60068-9
CHEN Tao, LUO Ze-jun, WANG Chu, ZHU Xi-feng. Effect of molten salt on re-pyrolysis behaviors of heavy bio-oil[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(22)60068-9
Citation: CHEN Tao, LUO Ze-jun, WANG Chu, ZHU Xi-feng. Effect of molten salt on re-pyrolysis behaviors of heavy bio-oil[J]. Journal of Fuel Chemistry and Technology. doi: 10.1016/S1872-5813(22)60068-9

熔融盐对重质生物油再热解影响的研究

doi: 10.1016/S1872-5813(22)60068-9
基金项目: 国家重点研发计划(2018YFB1501404)资助
详细信息
    作者简介:

    陈涛(1999—),男,硕士研究生,chent0610@mail.ustc.edu.cn

    通讯作者:

    E-mail: xfzhu@ustc.edu.cn

  • 中图分类号: TK6

Effect of molten salt on re-pyrolysis behaviors of heavy bio-oil

Funds: The project was supported by the National Key Research and Development Program of China (2018YFB1501404)
  • 摘要: 研究了KCl-ZnCl2熔融盐在400、500、600 ℃下对重质生物油再热解特性及产物分布的影响。结果表明,熔融盐提高了重质生物油热解的固体产率,同时使气体产率下降;对苯酚、甲基苯酚、乙基苯酚、对丙基苯酚等部分化合物具有较好的富集效果,尤其在400 ℃下甲基苯酚的相对含量从8.82%提升到了20.85%,而苯酚在600 ℃下相对含量从2.18%提升到了8.62%;在炭形成过程中,熔融盐使C元素含量降低,O元素含量提高,增大了孔隙的BET比表面积和总孔容积,促进了固体产物孔隙结构的形成,增大了孔隙的平均孔径。
  • 图  1  固定床热解装置示意图

    Figure  1  Schematic diagram of fixed bed pyrolysis equipment

    图  2  随受热温度变化的重质生物油再热解产物分布

    Figure  2  Distribution of re-pyrolysis products of heavy bio-oil with heating temperature

    (a): HB pyrolysis product distribution; (b): MS pyrolysis product distribution

    图  3  原油及再热解液体产物各组分的相对峰面积

    Figure  3  Relative peak area of each component of crude oil and re-pyrolysis liquid products

    表  1  重质生物油理化性质

    Table  1  Properties and elemental compositions of heavy bio-oil

    Moisture w/%Ultimate analysis w/%
    CHON
    5.1766.367.2225.670.75
    ①dry and ash-free basis, ②by difference
    下载: 导出CSV

    表  2  重质生物油主要有机组分相对峰面积

    Table  2  Relative peak area of main organic components in heavy bio-oil

    ComponentPhenolsAcids、Esters、KetonesAlcoholsHydrocarbons
    Relative peak area /%39.713.083.319.11
    下载: 导出CSV

    表  3  原油及再热解液体产物各组分的相对峰面积

    Table  3  Relative peak area of each component of crude oil and re-pyrolysis liquid products

    ComponentRelative peak area /%
    HB400HB500HB600MS400MS500MS600raw
    Acetic acid 1.01
    Methyl formate 1.01 1.05 1.01 0.94
    Ethyl acetate 0.53
    n-Ethyl propanoate 1.26
    Hexyl butyrate 0.72
    Toluene 0.54 0.5 0.81 0.6
    3-cyclohexyl-1-propanol 1.21 1.28 1.19
    Cyclohexaneacetic acid 1.24
    Styrene 0.54
    2,4-dimethylfuran 0.51 0.6 0.5
    2-methylcyclopentenone 0.96
    Phenol 4.43 5.24 0.54 7.38 6.01 8.62 2.18
    Indene 0.7 0.74 0.8 0.55 0.62 0.81
    Methyl cyclopentenolone 0.55 0.58
    Cresol 13.95 13.34 13.67 20.85 15.55 19.97 8.82
    Guaiacol 2.13 1.44
    7-methylbenzofuran 0.59
    3-methyl-1H-indene 0.56 0.52 0.76 0.71
    Xylenol 5.94 5.7 5.53 6.03 6.53 9.41 4.09
    Ethylphenol 0.98 4.94 2.54 3.01
    Naphthalene 2.75 2.9 3.22 3.47 4.16 4.37 2.98
    2-methoxy-4-methylphenol 4.63 4.07 2.08 3.93 3.44 1.72 4.28
    Trimethylphenol 1.71 2.05 2.53 0.55 2.76 1.04 0.53
    Catechol 3.15 3.78 4.65 1.98 0.99
    1,5,5-trimethyl-6-methylidenecyclohexene 1.68 1.88 1.82 0.83
    6-ethyl-m-cresol 1.86 2.48 1.13
    4-Propylphenol 0.96 0.88 1.71 1.65 1.88
    4-ethyl-2-methoxyphenol 4.34 3.66 2.34 3.76 3.45 1.72 2.86
    1-(2-methoxyphenyl)ethanol 0.67 0.52
    1-methylnaphthalene 1.4 1.53 2.27 1.99 2.4 2.6 2.47
    1-(4-hydroxy-3-methylphenyl)ethanone 0.67 1.02
    4-methylcatechol 3.21 3.46 3.91 1.49 2.08 1.59
    2-methoxy-5-prop-2-enyl-phenol 2.79 2.69 3.63 2.04 0.56 9.78
    4-n-propylanisole 1.22 1.26 1.2
    1-(4-methoxyphenyl)propan-1-ol 1.17
    Vanillyl alcohol 3.5 3.02 1.68 1.78
    Dihydroeugenol 1.57 0.87 0.99
    Diphyl 0.54
    1-ethylnaphthalene 0.6
    Trans-isoeugenol 4.26 4.46 2.16 2.05 0.71
    4-ethylcatechol 2.64 3.03 3.31 2.38 2.96 1.01
    5,6-dimethoxy-3-methyl-2,3-dihydroinden-1-one 2.07
    2,6-dimethoxyphenol 1.34 1.62
    Coniferyl alcohol 1.8 2.07 2.04 0.54
    4,4'-dimethoxybenzhydrol 2.82 2.54 2.29 2.47 2.53 0.55
    Vanillin 0.74
    1,4-dimethoxy-2,3-dimethylbenzene 0.99 1.15 0.82 0.72
    5-tert-butylpyrogallol 2.03 1.72 1.04 1.18 1.23 1.77
    4-allyl-2,6-dimethoxyphenol 1.68 1.69 1.31 2.83
    2-tert-butyl-4-methoxyphenol 0.56 0.71
    Phenalene 0.54 0.5 0.6 0.78
    1-phenylpropylbenzene 0.73 0.53
    Anthracene 0.68 0.6 0.74 0.83 0.85 0.99 1.24
    note:− relative peak area < 0.5%
    下载: 导出CSV

    表  4  随受热温度变化的固体产物的元素分析

    Table  4  Ultimate analysis of solid products varying with heating temperature

    SampleUltimate analysis w/%
    CHON
    HB40080.653.7513.352.25
    HB50083.453.3811.092.08
    HB60086.912.768.182.15
    MS40064.793.9829.301.93
    MS50062.463.3532.651.54
    MS60063.352.9032.281.47
    ①dry and ash-free basis ②by difference
    下载: 导出CSV

    表  5  随受热温度变化的固体产物的孔隙特性

    Table  5  Pore characteristics of solid products varying with heating temperature

    SampleBET surface area /(m2·g−1)Total pore volume /(cm3·g−1)Average pore size /nm
    HB400---
    HB5004.59830.0023202.0179
    HB60014.53260.0036120.9242
    MS4002.38820.0040516.7856
    MS5007.48150.0077794.1592
    MS60058.47110.0302342.0683
    note:HB400 few pores cannot be measured
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-06-30
  • 录用日期:  2022-10-25
  • 修回日期:  2022-10-11
  • 网络出版日期:  2022-10-26

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