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Chemistry and Industry of Forest Products ›› 2018, Vol. 38 ›› Issue (1): 47-52.doi: 10.3969/j.issn.0253-2417.2018.01.007

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The Effect of Mixed Alcohols on Physical Properties of Bio-oil

WANG Shuyang, LIU Xinhao, WU Yunpeng, JIANG Ziqi, TAN Wenying   

  1. College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China
  • Received:2017-05-25 Online:2018-02-25 Published:2018-02-28

Abstract: In order to improve the physical properties and stability of bio-oil,the mixed alcohol of methanol and ethanol with the mass ratio of 1:1 as additive was added different mass fraction into the bio-oil obtained from fast pyrolysis of agricultural and forestry wastes as the sample.And the effect of different mass fraction of additive on the main physical properties of bio-oil,such as kinematic viscosity,water content,heat value,flash point,density and pH value were studied.The experimental results showed that the mixed alcohol could improve the physical properties of bio-oil.As the additions amount of 5%-40%,the kinematic viscosity of bio-oil increased by 1.289-2.049 mm2/s,the moisture content decreased by 10.07%-44.75%,the calorific value increased by 1.70%-11.14%,the flash point decreased by 1.99%-14.44%,the density decreased by 1.56%-12.23%,the pH value increased by 8.51%-70.21%,and the rate of change reduced,which indicated the physical properties of bio-oil could be improved by adding the mixed alcohol.

Key words: bio-oil, mixed alcohols, physical property, improvement

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