Lubrication Properties of Bio-Oil and Its Emulsions with Diesel Oil

Qiang Lu, Zhi-Bo Zhang, Hang-Tao Liao, Xiao-Chu Yang and Chang-Qing Dong
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Qiang Lu: National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China
Zhi-Bo Zhang: National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China
Hang-Tao Liao: National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China
Xiao-Chu Yang: National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China
Chang-Qing Dong: National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, Beijing 102206, China

Energies, 2012, vol. 5, issue 3, 1-11

Abstract: 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.

Keywords: bio-oil; lubrication property; emulsion; four-ball tester; SEM; XPS (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2012
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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