| This research is"the pyrolysis of biomass pyrolysis producing Bos-gas technology"of the key project that National development and reform commission of a part,is one of the follow-up parts that University of science and technology Liaoning and HuiYu Energysources Two-door type SWZ-1 biomass pyrolysis hot solution stove item.This paper concludes detailed the current status of biomass pyrolysis for liquid product in china and overseas, especially about analysis of bio-oil composition. From the point of view of continuable development, the technology of biomass pyrolysis for producting bio-oil has a good prospect.Physiccal properties of bio-oil from the experiment of biomass pyrolysis were analyzed with precising apparatus nowdays and compared on some relevancing aspect,these physical properties include mainly density. acidity,viscosity and caloric value. In the experiment distillation method is adopted and distillations in the different temperature range are collected. By studying the chemical composition and its distillations, related reference material can be offered to research the use of biomass in energy and chemical industry. With gas chromatographic and mass spectrum analysis technology the chemical components of the samples are determined by looking up data base of mass spectrum Thermal kinetics characteristics are studied with comprehensive thermal analytic apparatus. Nature of the evaporation and combustion of biomass tar and its distillations is analyzed and then the outcome of distillation are analyzed with precining apparatus. From the experimental results, the way of tar utilizantion is discussed.the results can be used as valuable reference for the comprehensive unitilization of biomass tar. In this paper the author suggests research of collection, management and deep processing of biomass tar be strengthened in order to cause its comprehensive utilization to bring about social, economic and environmental benefit.
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