双组分精馏塔的通用电算程序

通用电算程序能对精馏过程中出现一个或多个挟点的情况进行最小回流比的计算,并用优化原理来确定适宜回流比,通用性较强,计算结果合理

The Methematical Models of Minimum Wetting Rate For Packed Towers

用液体沿垂直壁面的膜状流动来模拟液体在填料表面的流动，用固定床的特性参数来模拟填料层，导出求算整砌填料层和乱堆填料层最小润湿速率的数学模型.还讨论了数学模型的计算结果.This paper deals with the imitation of liquid Flowing over the surFace of packings with liquid Film Flowing over the surFace of vertical plates, and the imitation of a packed bed with characteristic parameters of a Fixed bed.Methematical models are derived For calculating minimum wetting rate of stacked packings and dumped packings, and also the calculation results obtained From these models are discussed

Study on Filmy Flow Model and Minimum Wetting Rate for Packed Column

根据液体在填料表面膜状流动的特点 ,建立了填料塔的膜流模型 ,并将该模型用于填料塔最小润湿速率的研究。结果表明 ,填料塔的最小润湿速率与填料大小无关 ,而与堆积方式有关。文中提供的最小润湿速率算式可以作为确定填料塔喷淋密度的依据Depending on characteristics of liquid flowing over the surface of packing,a filmy flow model is developed,by which the minimum wetting rate for packed column is studied.Results show the minimum wetting rate changes with the stacking manner but does not with the packing size,and our developed model is available for determining the spray density of packed column

Study on the PTFE/HDPE Prelubricated Innerduct (II)

采用液相接枝技术 ,以马来酸酐 (MAH)为单体对高密度聚乙烯 (HDPE)进行接枝功能改性 ,用红外光谱对接枝物进行了表征 .本文研究了聚四氟乙烯 (PTFE)含量对改性 HDPE/ PTFE共混材料的力学性能、加工性能和摩擦性能的影响 ,确定了光纤保护套管的配比 .High density polyethylene (HDPE) was modified functionarily by the liquid-phase grafing method with maleic anhydride (MAH) as a monomer. Grafting product was characterized by IR. The effects of polytetrafluoroethylene (PTFE) content on the mechanical propertiesprocessibility and frictional properties of HDPE/PTFE blend were studied. The recipe used to manufacture fiber optic innerduct were defined

高电荷态ECR离子源——LECR3

研制成功了一台新的高电荷态ECR离子源,该离子源主要为原子物理实验提供各种高电荷态离子束流,是基于中国科学院近代物理研究所14.5GHz高电荷态ECR离子源设计建成的,同时在该离子源中应用多种有利于提高束流强度的技术,设计时考虑到采用双频加热,试图通过试验双频加热模式来提高高电荷态离子的产额,并设计建造了一套束流聚焦分析系统,以提高电荷态分辨率和束流传输效率

2.45GHz单电荷态电子回旋共振离子源

描述了一台 2 .4 5GHz单电荷态电子回旋共振 (ECR)离子源的原理、结构与应用。介绍了其微波系统与磁场结构。在微波输入功率约 6 0 0W ,引出高压 2 2kV ,引出孔径为6mm时 ,该离子源的总束流I(H1++H2 ++H3+)可达 90mA