流化床系统参数对生物油产率的影响

Influence of operating parameters of fluidized bed on bio-oil yields

为了进一步探明流化床系统参数对生物质热裂解产物生物油产率的影响规律而进行了热裂解液化试验。该研究以玉米秸秆为原料,采用山东理工大学研制的以氩气等离子体作为主热源的生物质快速热裂解液化流化床试验装置,以输入功率、氩气流量、压差和进料率为试验因子,生物油产率为试验指标,采用二次正交旋转组合的方法进行试验。并对试验结果利用Rada软件分析得出热裂解生物油产率的二次回归方程及该试验条件下生物油得最大产率的参数组合,即当输入功率为38.5kW,氩气流量为2.0m3/h,压差为200mm,进料率为0.87kg/h时,最高生物油产率为58.45%。在试验条件下,可得压差和进料率是影响生物油产率的主要因素,而输入功率和氩气流量对其产率的影响相对较弱。

In order to investigate the effects factors on the bio-oil yield,orthogonal experiments on the pyrolysis of corn stalk in a fludized bed reactor heated by Ar plasma which was made in Shandong University of Technology were carried out.With the input power,Ar flow rare,reactor pressure and feeding rate as input factors,the bio-oil yield as the output,the square combination experiments of four factors and five levels with orthogonal rotation were conducted.The results showed that when the input power was 38.5 kW,Ar flow rate was 2.0 m3/h,pressure was 200 mm water column,feeding rate was 0.87 kg/h,the highest bio-oil yield was 58.45%.The pressure in the reactor and feeding rate were the main factors to the bio-oil yields,while the input power and Ar flow rate were the second factors.