Energies | |
Lubrication Properties of Bio-Oil and Its Emulsions with Diesel Oil | |
Qiang Lu1  Zhi-Bo Zhang2  Hang-Tao Liao2  Xiao-Chu Yang2  | |
[1] National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China; | |
关键词: bio-oil; lubrication property; emulsion; four-ball tester; SEM; XPS; | |
DOI : 10.3390/en5030741 | |
来源: mdpi | |
【 摘 要 】
Bio-oil from fast pyrolysis of biomass is a low-grade liquid fuel, which can be upgraded through the emulsification with diesel oil. In this study, we prepared two rice husk bio-oil samples with different solid char contents and three bio-oil/diesel-oil emulsion samples with the bio-oil content of 10 wt%, 30 wt% and 50 wt%, respectively. The lubrication properties of these oil samples were evaluated by a four-ball tester. The morphologies of the worn ball surface were observed by scanning electron microscope (SEM). The chemical states of the elements on the worn surface and non-worn surface were analyzed by X-ray photoelectron spectroscope (XPS). The results showed that the bio-oil possessed better extreme-pressure, anti-wear and friction-reducing properties than the commercial diesel oil (number zero). The solid char particles in the bio-oil could improve its lubrication performance. Moreover, the lubrication ability of the emulsions would be enhanced with the increasing of the bio-oil content in the emulsions.
【 授权许可】
CC BY
© 2012 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190045123ZK.pdf | 2152KB | download |