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High yield bio-oil production by hydrothermal liquefaction of a hydrocarbon-rich microalgae and biocrude upgrading

Carbon Resources Conversion 2018年第2期1卷 153-159页

作者： Rui Ren Xue Han Haiping Zhang Hongfei Lin Jianshe Zhao Ying Zheng Hui Wang Department of Chemical Engineering University of New BrunswickPO Box 4400FrederictonNBCanada School of Engineering University of EdinburghMayfield RoadEdinburghUK Department of Chemistry Northwest UniversityXi’anChina

A green colonial microalgae Botryococcus braunii was hydrothermally processed under subcritical water conditions without the addition of catalysts,obtaining an oil yield as high as 68%.The higher heating value of liquefaction products is close to that of petroleum crude *** oil fraction from Botryococcus braunii liquefaction was specified for the first time,and the liquefaction mechanism was *** to the high lipid content of Botryococcus braunii,the liquefaction product distribution is quite distinct from other *** produced biocrudes contain9%oxygen,with oleic acid as the main *** derived from oleic acid and proteins are the major nitrogenates in the *** biocrude was processed using catalytic cracking and *** cracking mostly produces aromatics,while the majority of hydrotreating products are straight and branched *** oxygen content in the catalytic cracking products was very *** presence of amides in the hydrotreating feed changes the reaction pathway from hydrodecarboxylation to hydrodeoxygenation as a result of the competitive adsorption of amides on the active sites for *** processes show satisfactory denitrogenation *** cracking displays superior ability than hydrotreating with regards to the removal of oxygen.

关键词： Hydrothermal liquefaction Botryococcus braunii Biocrude upgrading Fluidized catalyticcracking unsupported comosnanocatalyst

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