【摘要】 为克服复合吸附剂传热与传质性能协同强化的矛盾,本文以膨胀石墨、木粉和氯化钙为原料混合浸渍并固化,形成膨胀石墨为骨架的导热网络,基于氯化钙对木粉的活化造孔形成丰富孔隙的传质通道,获得导热传质良好的复合吸附剂制备工艺。利用正交试验法分析了钙墨比、木粉粒度、钙木比、炭化活化的温度和时间五因素不同水平对渗透特性的影响。结果表明,渗透率在钙木比和木粉粒度上均存在最优值,并随着钙墨比、炭化活化的温度和时间三因素的上升而增大,其中钙墨比对渗透率影响远大于其余因素。经过补充试验验证,最终所获最优样品渗透率达到5.67824×10^-13m²,优化所得制备工艺为钙木比2,温度600℃,时间2.5 h,粒度目数140¹50,钙墨比4。更多还原

【Abstract】 In order to solve the conflicts of synergistic enhancement of heat and mass transfer,micropores have been formed via the carbonization and activation mechanism inner the curing mixtures of expand graphite,CaCl₂and wood powder.The effects of the ratio of CaCl₂ to graphite and wood powder,the particle size of wood powder,activation temperature and activation time on the mass-transfer characteristics have been studied by the method of orthogonal experiment.It was proved that the ratio of CaCl₂ to graphite had a significant impact in this study.An optimum particle size of wood powder and ratio of CaCl₂ to wood powder has been obtained.The permeability increases with the ratio of CaCl₂ to graphite,the activation temperature and time increasing.An optimum permeability value is 5.67824×10^-13 m².The optimization process parameters are that ratio of CaCl₂ to wood power is 2,activation temperature is 600℃,activation time is 2 h,particle size mesh is 140¹50,ratio of CaCl₂ to graphite is 4.更多还原