CIESC Journal ›› 2017, Vol. 68 ›› Issue (9): 3592-3599.DOI: 10.11949/j.issn.0438-1157.20170116

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Analysis of hydrothermal liquefaction of algae residue with n-propylamine solution

CHEN Yongxing, WEI Qifeng, REN Xiulian   

  1. College of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, Shandong, China
  • Received:2017-02-06 Revised:2017-05-26 Online:2017-09-05 Published:2017-09-05
  • Contact: 10.11949/j.issn.0438-1157.20170116
  • Supported by:

    supported by the National High Technology Research and Development Program of China (2010AA10Z404).

丙胺溶液水热液化海藻残渣及产物生物油分析

陈泳兴, 魏琦峰, 任秀莲   

  1. 哈尔滨工业大学(威海)海洋科学与技术学院, 山东 威海 264209
  • 通讯作者: 任秀莲
  • 基金资助:

    国家高技术研究发展计划项目(2010AA10Z404)。

Abstract:

Hydrothermal liquefaction of Undaria pinnatifida residue with n-propylamine solution was investigated, and the components of bio-oil, water-soluble substances and solid residue were analyzed. The highest bio-oil yield of 39.81% (mass) was obtained with n-propylamine concentration of 1.5 mol·L-1, temperature 240℃, solid-to-liquid ratio 1:10. The results of GC-MS and FT-IR showed that the bio-oil consisted of alcohols, alkanes, esters, acids, phenols and amides, and also contained C=C, C=O, O-H and other chemical bonds. The results of HPLC and GC-MS analysis indicated that the main products of water-soluble substances were acids. Furtherly, XRD analysis of solid residue showed that the crystallization of cellulose decreased after hydrothermal liquefaction. The effect of temperature on the recovery of n-propylamine was also studied, and the recovery rate reached 92.56% at 100℃.

Key words: biomass, bio-oil, chemicals, hydrothermal, liquefaction, n-propylamine

摘要:

使用丙胺溶液对裙带菜孢子叶残渣进行水热液化,分析了水热液化后生物油、水溶性物质和固体残渣的成分。在丙胺浓度1.5 mol·L-1、反应温度240℃、料液比1:10的条件下得到生物油的最大产率为39.81%(质量)。生物油通过GC-MS和FT-IR进行分析,结果表明成分包含醇类、烷类、酯类、酸类、酚类和酰胺类等,并存在C=C、C=O、O-H等化合键。水溶性物质通过HPLC和GC-MS进行分析,结果表明主要产物为酸类物质。固体残渣通过XRD进行分析,结果表明水热液化后纤维素的结晶度降低。最后对丙胺进行回收,在温度100℃条件下回收率达到92.56%。

关键词: 生物质, 生物油, 化学品, 水热, 液化, 丙胺

CLC Number: