| A fast pyrolysis experimental unit with a treatment capacity of 2kg/h is designed firstly. The experimental device consists of a feeding system(two-stage spiral feeding), a reaction system, a separation system(two-stage cyclone), a condensate system(the wall condensation snake-shaped tube condenser and a mist eliminator) and a control system.The fast pyrolysis experiment examined the influence of feeding quantity, residence time, particle size and reaction temperature on the liquid yield, the results show that the yield of liquid can reach up to 70wt% when the liquid residence time is less than Is, the granular particle diameter is less than lmm and the reaction temperature is 500℃. The experiment also investigated the influence of the condensation temperature on the quality of bio-oil. The condensate at the first level (above 100℃) mainly has acids and esters with large molecules; the condensate at the second level (above 50℃) mainly has aldehydes, ketones and phenol; and the condensate at the third level (below 50℃) mainly has small polar molecules such as acids, aldehydes, phenol as well as a lot of water. The acid has equal distribution in the three condensates.The high water content, high oxygen content, high viscosity, low calorific value and other unfavorable factors limit the use of bio-oil. The deoxygenation of bio-oil is investigated in the presence of catalyst in an autoclave. The experiment studies the influence of the temperature, reaction time, The finally deoxynation of bio-oil was 50wt% on optimal condition (Pt/γ-Al2O3,240℃,1h,6MPa), which value jump to 33.4KJ/kg and water separated from bio-oil. The results of GC-MS revealed that the content of acid,aldehyde and alkone in the bio-oil decreased, phenol same, and eater increased with hydrocarbon. For the further deoxygenation to enhance the bio-oil quality, Continully, playing experiment at high temperature, the final deoxynation decreased 84% in 330℃,1h and exist of 1% triethylamine(promoter of RN32V).
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