共查询到18条相似文献,搜索用时 101 毫秒
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本文介绍了新近研制的组合环单体填料对于汽液接触过程的流体力学与传质性能。实验表明,这种填料具有比矩鞍环填料阻力小、传质效率高的优点,可以代替鲍尔环、矩鞍环等常用填料,以取得良好经济效益。 相似文献
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QH—1型扁环填料的气液接触性能 总被引:6,自引:0,他引:6
本文简要介绍了新近研制的QH-1型扁环填料对于汽液接触过程的流体力学与传质性能。实验表明,这种填料具有通量大,阻力小,传质效率高的优点,可望代替鲍代环等常用填料,以取得良好经济效益。 相似文献
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三种填料结构旋转床传质及压降性能对比 总被引:1,自引:0,他引:1
《化学工程》2017,(3):27-32
为了考察自主设计的新型板式旋转填料床传质及压降性能,分别以NaOH-H_2O和空气-水为实验体系,采用对比实验的研究方法,考察了转速、液量和气量对新型板式填料床、传统丝网填料床和鲍尔环填料床的传质与压降性能的影响。传质性能研究表明:在相同操作条件下,丝网填料床传质性能最优,但新型板式填料床传质性能与丝网填料床相差不大(<1.0 s~(-1));压降性能研究发现,气量是影响填料床压降的重要因素,且在相同操作条件下,压降值始终有丝网填料床>鲍尔环填料床>新型板式填料床,丝网填料床压降值与新型板式填料床相差33%以上。新型板式填料床在传质效率损失不大的情况下,损失了较低能耗,表现出优良的综合性能。 相似文献
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研究新型填料共轭环的流体力学和传质性能,并归纳出一个传质单元高度关联式,其计算值与实验值吻合。 相似文献
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采用30%TBP(煤油)/HAc/水体系研究了脉冲填料萃取塔的流体动力学和传质特性,考察了脉冲强度和填普类型对塔性能的影响。实验表明装填QH-1型扁环的脉冲填料 性能明显优于装填陶瓷和不锈钢拉西环的脉冲塔。文中给出了装填QH-1型扁环的脉冲填普塔的特性速度和Hoxp的经验计算式。 相似文献
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针对高温浓硫酸腐蚀性强所开发的NTJ型瓷质阶梯环填料,以公称直径为50mm的进行了几何特性数据测定和填料的流体力学性能与传质性能试验.试验结果表明它具有通量大、阻力小、效率高、操作范围宽等特点,从而提高了塔设备的生产强度,降低了能量消耗,是一种综合性能较好的瓷质化工填料. 相似文献
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PD Dr.‐Ing. habil. S. Raatz Dr.‐Ing. P. Klapper Prof. Dr.‐Ing. habil. G. Härtel 《化学,工程师,技术》2010,82(10):1705-1711
The interfacial tension is a material parameter describing the interface between two fluid phases. It is also a changing physical value in mass transfer processes beyond equilibrium. Thus, the measurement of change in interfacial tension characterizes adsorption and mass transfer processes at liquid‐liquid interfaces. The units of a pendant drop tensiometer can represent a mini mass transfer cell. 相似文献
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In this study, extraction of p-cresol from the simulated wastewater has been studied using centrifugal extractors and QH-1 extractant. The distribution ratio of p-cresol was approximately 308.5 in the QH-1-p-cresol (pH =2.0) system. The extraction stage efficiency of the single-stage centrifugal extractor was higher than 92%, and the extraction rate of the three-stage cascade was higher than 99%. When 15% NaOH was used for the stripping of p-cresol in QH-1 solution, the stripping rate of the three-stage cascade reached 100%. A mathematical model of multistage countercurrent extraction process that considers the phase volume change, extraction stage efficiency, and phase entrainment was used to simulate the extraction of p-cresol using centrifugal extractors. The calculated results using this model were in good agreement with the experimental results. 相似文献
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The hydrodynamics and mass transfer characteristics of a pulsed packed column (PPC) filled with a stainless steel super mini ring (SMR), ceramic and stainless steel Raschig rings have been studied using a 30% tributyl phosphate‐kerosene (dispersed phase)/acetic acid/water (continuous phase) system. Experiments were performed in a 100 mm internal diameter column with 1.0 m height of packing. The mass transfer and axial mixing parameters were estimated simultaneously from the measured concentration profiles of two‐phase based on the backflow model. It was found that pulsation has great influence on hydrodynamics and mass transfer characteristics of PPC with the SMR. Hoxp and Hox decrease significantly with pulsation, whereas flooding velocity decreases only slightly. Comparison among the three types of packing showed that the SMR has superior characteristics both in terms of capacity and mass transfer efficiency. The influence of mass transfer on characteristics of PPC was also studied. New empirical equations of characteristic velocity, Hoxand Hoxd were proposed and good agreement between calculated and experimental data was obtained. 相似文献