Abstract: The recent progress in separation of bio-oils by extraction worldwide was reviewed，and specifically，the extraction with water，extraction with organic solvents，reactive extraction，supercritical extraction，and extraction-column chromatography were discussed. The advantages and drawbacks of aforementioned extraction methods were summarized. Improvements in biomass fast pyrolysis itself，such as pre-treatment of feedstocks，pryolysis with catalysts，or multi-stage condensation of pyrolysis-vapor should be attempted to obtain bio-oils rich in target components to facilitate separation of bio-oils by extraction. New extraction methods，such as microwave extraction and ultrasonic extraction may be investigated to examine their effectiveness for bio-oils separation.

Key words: bio-oil, extraction, separation；biomass

摘要： 综述了国内外采用萃取技术分离生物油的研究进展，包括水萃取、有机溶剂萃取、络合萃取、超临界萃取、柱层析萃取等，总结了这些萃取方法的优点和缺点。指出可通过对生物质热解过程本身进行改进，如对原料进行预处理、引入催化剂进行催化热解、对热解蒸汽进行分级冷凝等，以获得富含目的产物组成的生物油，为萃取分离提供便利。最后，建议尝试一些新的萃取分离方法，如微波萃取和超声波萃取等，考察对生物油萃取分离的有效性。

关键词: 生物油, 萃取, 分离, 生物质