新型复合吸附剂传质特性的正交试验研究  

Mass-Transfer Characteristics Study of a Novel Composite Adsorbent by Orthogonal Experiment

作　　者：董震[1] 郝宗华[1] 吴涛[1] 吕明新[2] 陈常念[1] 潘继红[1] 赖艳华[1,2] 

机构地区：[1]山东大学能源与动力工程学院,济南250061 [2]山东大学苏州研究院,苏州215021

出　　处：《工程热物理学报》2016年第4期840-845,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.51476093);山东省科技发展计划项目(No.2013GGX10403);山东大学自然科学专项(No.2014YQ007);苏州市科技发展计划(No.ZXG201443)

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^(-13)m^2,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140~150,钙墨比4。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,CaCl_2and wood powder.The effects of the ratio of CaCl_2 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 CaCl_2 to graphite had a significant impact in this study.An optimum particle size of wood powder and ratio of CaCl_2 to wood powder has been obtained.The permeability increases with the ratio of CaCl_2 to graphite,the activation temperature and time increasing.An optimum permeability value is 5.67824×10^（-13） m^2.The optimization process parameters are that ratio of CaCl_2 to wood power is 2,activation temperature is 600℃,activation time is 2 h,particle size mesh is 140～150,ratio of CaCl_2 to graphite is 4.

关 键 词：复合吸附剂 传质 炭化活化 木粉 正交试验 

分 类 号：TB66[一般工业技术—制冷工程]