| 熔盐热裂解生物质制生物油 |
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| 引用本文： | 姬登祥,蔡腾跃,艾宁,于凤文,姜洪涛,计建炳.熔盐热裂解生物质制生物油[J].生物工程学报,2011,27(3):475-481. |
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| 作者姓名： | 姬登祥 蔡腾跃 艾宁 于凤文 姜洪涛 计建炳 |
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| 作者单位： | 浙江工业大学化学工程与材料学院浙江省生物燃料利用技术研究重点实验室,杭州,310032 |
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| 基金项目： | 国家自然科学基金 (No. 20876150)，高等学校博士学科点专项科研基金 (No. 20103317110001)，浙江省科技计划项目(No. 2009C31073) 资助。 |
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| 摘 要： | 为探讨热裂解条件对熔盐中生物质热裂解制生物油的影响，在自行设计的反应器中，以摩尔比为7∶6的ZnCl2-KCl混合熔盐作为热裂解的热载体、催化剂和分散剂，考察了500 ℃时添加的金属盐和生物质原料的影响，并采用气相色谱-质谱仪 (GC-MS) 对生物油的主要组成进行了分析。结果表明：添加的金属盐显著影响热裂解产物得率，稀土金属盐显著提高生物油得率，降低生物油的含水率，添加摩尔分数为5.0％ LaCl3时生物油得率为32.0％，含水率为61.5％；水稻秸秆热裂解的生物油和焦炭得率较高，稻壳热裂解的气体得率较高；金属添加盐对生物油组成有较强的选择性，LiCl和FeCl2对生物质向小分子裂解具有较强的催化作用，而CrCl3、CaCl2和LaCl3对生物油二次裂解具有抑制作用。研究结果为熔盐热裂解生物质制生物油提供了参考。
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| 关 键 词： | 熔盐，热裂解，生物质，生物油 |
| 收稿时间： | 2010/5/10 0:00:00 |
Bio-oil production from biomass pyrolysis in molten salt |
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| Dengxiang Ji,Tengyue Cai,Ning Ai,Fengwen Yu,Hongtao Jiang and Jianbing Ji.Bio-oil production from biomass pyrolysis in molten salt[J].Chinese Journal of Biotechnology,2011,27(3):475-481. |
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| Authors: | Dengxiang Ji Tengyue Cai Ning Ai Fengwen Yu Hongtao Jiang and Jianbing Ji |
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| Institution: | Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China;Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China |
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| Abstract: | In order to investigate the effects of pyrolysis conditions on bio-oil production from biomass in molten salt, experiments of biomass pyrolysis were carried out in a self-designed reactor in which the molten salt ZnCl2-KCl (with mole ratio 7/6) was selected as heat carrier, catalyst and dispersion agent. The effects of metal salt added into ZnCl2-KCl and biomass material on biomass pyrolysis were discussed, and the main compositions of bio-oil were determined by GC-MS. Metal salt added into molten salt could affect pyrolysis production yields remarkably. Lanthanon salt could enhance bio-oil yield and decrease water content in bio-oil, when mole fraction of 5.0% LaCl3 was added, bio-oil yield could reach up to 32.0%, and water content of bio-oil could reduce to 61.5%. The bio-oil and char yields were higher when rice straw was pyrolysed, while gas yield was higher when rice husk was used. Metal salts showed great selectivity on compositions of bio-oil. LiCl and FeCl2 promoted biomass to pyrolyse into smaller molecular weight compounds. CrCl3, CaCl2 and LaCl3 could restrain second pyrolysis of bio-oil. The research provided a scientific reference for production of bio-oil from biomass pyrolysis in molten salt. |
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| Keywords: | molten salt pyrolysis biomass bio-oil |
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