生物热解油精制改性研究进展

Progess in research of upgrading of pyrolytic bio-oil

综述了近年来生物热解油的精制改性技术(如催化加氢、催化裂解、添加溶剂、乳化及催化酯化等),并对其优缺点进行了分析比较。根据生物油中化学组成的特点,指出将活泼极性基团转化为较稳定的非极性基团(如将羧基转化为酯基,将醛基转化为缩醛),是生物油精制改性十分有效的方法。

In this paper, the recent progress in upgrading process for biomass pyrolytic oil （bio-oil） is reviewed. The advantages and shortcomings of several important upgrading processes such as catalytic hydrogenation, catalytic pyrolysis, solvent adding, emulsification and catalytic esterification are analyzed and compared. According to the original properties of bio-oil, it is pointed out that the conversion of active polar groups to stable non-polar groups（e, g. changing carboxylic acids to ester, and aldehyde to acetal group） is an effective process for modifying bio-oil.