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微藻与塑料混合热解制备低氮低氧富烃液体油

唐紫玥 陈伟 胡俊豪 杨海平 陈应泉 陈汉平

唐紫玥, 陈伟, 胡俊豪, 杨海平, 陈应泉, 陈汉平. 微藻与塑料混合热解制备低氮低氧富烃液体油[J]. 燃料化学学报. doi: 10.19906/j.cnki.JFCT.2021070
引用本文: 唐紫玥, 陈伟, 胡俊豪, 杨海平, 陈应泉, 陈汉平. 微藻与塑料混合热解制备低氮低氧富烃液体油[J]. 燃料化学学报. doi: 10.19906/j.cnki.JFCT.2021070
TANG Zi–yue, CHEN Wei, HU Jun–hao, YANG Hai–ping, CHEN Ying–quan, CHEN Han–ping. Microalgae co–pyrolysis with waste plastics to prepare low–O/N and hydrocarbon–rich liquid oil[J]. Journal of Fuel Chemistry and Technology. doi: 10.19906/j.cnki.JFCT.2021070
Citation: TANG Zi–yue, CHEN Wei, HU Jun–hao, YANG Hai–ping, CHEN Ying–quan, CHEN Han–ping. Microalgae co–pyrolysis with waste plastics to prepare low–O/N and hydrocarbon–rich liquid oil[J]. Journal of Fuel Chemistry and Technology. doi: 10.19906/j.cnki.JFCT.2021070

微藻与塑料混合热解制备低氮低氧富烃液体油

doi: 10.19906/j.cnki.JFCT.2021070
基金项目: 国家自然科学基金(51906082,51861130362),中国博士后科学基金(2019M662617)资助
详细信息
    通讯作者:

    Tel: 027-87542417-8211,E-mail: yhping2002@163.com

  • 中图分类号: TK6

Microalgae co–pyrolysis with waste plastics to prepare low–O/N and hydrocarbon–rich liquid oil

Funds: The project was supported by the National Natural Science Foundation of China (51906082, 51861130362) and the China Postdoctoral Science Foundation (2019M662617)
  • 摘要: 为了减少油中氮氧化合物,提高微藻生物油品质,本研究在固定床上开展了微拟球藻(NS)和聚乙烯塑料(LDPE)的混合热解/催化特性,探讨了O和N在热解气、液、固相的分布情况,并以此探讨了微藻与LDPE之间的交互作用以及催化剂的加入对混合热解的影响。研究发现,混合热解能有效抑制O和N向油中转移,促进微藻中O转变为H2O,N向气体产物转移。此外塑料添加明显减少了油中羧酸、酰胺和含氮杂环等含氧/氮化合物,提高了脂肪烃含量,同时有效促进碳氢气体的形成,并对CO和H2也有一定的协同作用,特别是在25%LDPE时协同效应最强。同时ZSM-5能促进碳氢气体形成,提高气体产物的热值(35.6 MJ/m3),并进一步减少油中含氮化合物,促进N向气体转移,O向气体和H2O中转移,从而使油中O、N含量明显降低;此外混合催化热解能在一定程度上抑制芳烃的形成,提高脂肪烃选择性。
  • 图  1  微藻与塑料混合热解反应系统示意图

    Figure  1  Schematic diagram of the co-pyrolysis process of microalgae and plastics

    图  2  微藻与塑料在600 ℃下混合热解的产物分布(a),O/N分布情况(b)

    Figure  2  Products distribution (a) and O/N distribution in products (b) of co-pyrolysis of microalgae and plastics at 600 ℃

    图  3  微藻和塑料混合热解气体释放特性

    Figure  3  Properties of the gas compositions from co–pyrolysis of microalgae and plastic

    图  4  微藻和塑料混合热解的液体油组分分布

    Figure  4  Compositions of oil from co–pyrolysis of microalgae and plastic

    图  5  微藻原料和微藻与塑料混合热解焦炭的FT-IR谱图

    Figure  5  FT-IR spectrum of raw microalgae and chars from microalgae co–pyrolysis with plastic

    图  6  塑料添加量为25%时,微藻和塑料在600 ℃催化混合热解的产物分布(a)和O、N分布特性(b)

    Figure  6  Products distribution (a) and the distribution of O and N (b) from microalgae catalytic co–pyrolysis with plastic at 600 ℃ when 25%LDPE added

    图  7  塑料添加量为25%时,微藻和塑料催化热解的气体释放特性(a)和液体油组分(b)

    Figure  7  Properties of gas releasing(a) and the compositions of liquid oil (b) from catalytic co–pyrolysis of microalgae and LDPE at 600 ℃ when 25%LDPE added

    表  1  样品的工业分析、元素分析和微藻的生化组成

    Table  1  Proximate, ultimate analysis of samples and biochemical constituents of microalgae

    SampleUltimate analysis wad/%Proximate analysis wad/%Biochemical constituents wad/%
    CHNSO*MVFCAlipidproteincarbohydrate*
    NS50.617.316.680.6424.84.0179.6110.3863040.819.2
    LDPE84.3215.470.21100   
    * : by difference; –: not detected
    下载: 导出CSV
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  • 收稿日期:  2021-05-27
  • 修回日期:  2021-07-05
  • 网络出版日期:  2021-08-10

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