NJP瓷质异鞍填料的开发与应用

在φ６００ｍｍ×６５５６ｍｍＰＶＣ塔中，对Ｄｇ５０瓷异鞍、Ｄｇ７６瓷异鞍和Ｄｇ５０瓷矩鞍填料，进行了空气－水系统、空气－浓硫酸系统的流体力学和传质性能对比研究。提出了上述填料的压力降、传质的计算公式，可供生产、设计采用。介绍了文具新型填料在硫酸工业中的应用效果。     

聚丙烯孔板波纹填料表面改性研究

采用液相化学法对聚丙烯孔板波纹填料进行表面改性,并对改性后的填料作性能测试。结果表明,改性后的聚丙烯填料表面粗糙度增大并引入含氧极性基团,其表面水接触角从８８°降低至４５°,临界表面张力由２８×－３Ｎ／ｍ提高到５５×１０－３Ｎ／ｍ,气相总传质单元数平均增加２４％,传质性能大为改善。     

金属IMPAC—1填料流体力学与传质性能的研究

在内径为５００ｍｍ有机玻璃塔中，以空气，水为物系，对金属ＩＭＰＡＣ－１型填料的流体力学及传质性能进行了实验研究，获得了该填料的几何特性，流体力学及传质性能数据，与ＩＮＴＡＬＯＸＤＧ５０相比，传质性能提高近２０％以上，为方便工业应用，对数据进行了关联。     

渗铝碳钢共轭环的流体力学传质性能研究

采用φ３００的有机玻璃塔，用解吸富氧水的方法，分别测定了φ２５渗铝碳钢共轭环和同尺寸的不锈钢共轭环的流体力学性能和传质性能，并作了比较。分析了填料的特性数据和润湿性能的变化对地传质和流体力学性能的影响。     

SW型网孔波纹填料开发及应用

本文概述了ＳＷ型网孔波纹填料特点，进行了流体力学与传质性能试验，得出了传质准数关联式。与其它波纹填料的对比表明，ＳＷ型网孔波纹填料的技术和经济综合性能优良，具有广泛应用的前景。     

填料吸收塔操作性能的综合研究

合理的操作是优化设计的保证,本文从这一角度对填料吸收塔作了一些探讨。分别采用空气-水系统和空气-氨-水系统对16mm×16mm×2mm瓷拉西环填料塔的流体力学性能和传质性能进行了综合实验研究。研究结果表明:若填料层内存有污垢,相同气速下的压降增加40％～260％;接近泛点气速下进行传质操作效率最佳;泛点气速的实测值与计算值相比偏差在5％以内。此外,本文还提出合理确定传质操作过程稳定时间的方法。     

SW型网孔波纹填料开发及应用

本文概述了SW型网孔波纹填料特点,进行了流体力学与传质性能试验,得出了传质准数关联式。与其它波纹填料的对比表明,SW型网孔波纹填料的技术和经济综合性能优良,具有广泛应用的前景。     

塑料TGJ型填料的流体力学及传质性能研究

在内径φ６００ＭＭ塔中，以空气－氨－水为物系，对塑料ＴＧＪ型填料的流体力学及传质性能进行了研究。获得了该填料的几何特性、泛点填料因子、压降填料因子及传质系数等有关参数。结果表明，塑料ＴＧＪ型填料具有通量大、压降低、气液分布均匀、不易堵塞及传质性能良好等优点。     

塑料花心球填料流体力学及传质性能研究

在φ600填料塔中。用空气-氨-水系统分别对φ30、φ40花心球形填料进行流体力学及传质特性实验研究。结果表明此种填料由于各向同性,对液体有良好的分散作用,其性能与同尺寸环矩鞍相当。     

双矩鞍环(TH-Ⅲ)型颗粒填料在气液传质过程中的传递性能研究

在内径为φ600mm的有机玻璃塔中,对φ38的双矩鞍环(TH-Ⅲ)型乱堆填料的流体力学性能和传质性能进行了研究,并与NR1.5#散堆填料进行了比较,结果表明双矩鞍环颗粒填料具有更为优良的流体力学性能和传质效率.     

新型离心传质设备的研究

本文介绍一种利用离心力强化传质过程的转子传质装置。这种装置具有传质效率高、生产能力大、体积小、重量轻等特点。一个外径为300mm,高40mm,内装填料的转子,以乙醇—水系进行全回流精馏试验。对于6×6×0.1不锈钢压延环填料,在回流率为6.9t/(h·m~2),转速为900rpm的操作条件下,获得每块理论板当量径向的填料层厚度为3.93cm,即每米填料相当于25块理论板的分离效果。     

塑料花环填料的流体力学及传质性能研究

本实验用空气-水-氨体系,在内径为φ600 mm的塔中,对塑料花环填料进行了流体力学及传质特性的测试。结果表明花环填料通量大、压降低、在高液体负荷下具有极好的传质性能,而且耐腐蚀、不易堵塞。实验测定的塔填料因子和传质系数有设计参考意义。     

复合填料萃取塔操作性能研究

在内径为０．１ｍ，高度为１．０ｍ的玻璃萃取塔中，对四种不同填料用低界面张力体系（正丁醇－丁二酸－水）研究了填料塔的流体力学和传质性能，实验结果表明，用其中的两种填料组合的复合填料萃取塔具有较大的通量和较高的传质效率，可望在工业装置中得到推广应用。     

填充密度对中空纤维膜接触器精馏过程壳程传质的影响

探讨了填充密度对新型聚丙烯中空纤维膜接触器精馏过程中壳程传质的影响。中空纤维膜接触器在填充密度为4.7%、9.5%、19%时均可在远离常规填料液泛线以上的气速范围操作。低填充密度下,壳程的Sherwood数理论值大于实验值,但填充密度较高时,实验值大于理论值。高Reynolds数有利于壳程传质,低填充密度时的Sherwood数高于高填充密度时。随着F因子逐步增大,壳程气相传质阻力随之变小,且膜接触器的填充密度越高,气相传质阻力越大。3种不同填充密度膜接触器的气相总传质系数随着接触器填充密度的增大而迅速减小,由391.84×10^-5 m·s^-1降低为83.28×10^-5 m·s^-1。     

HYDRODYNAMICS AND MASS TRANSFER IN A NEW TYPE (FG) STACK PACKED EXTRACTION COLUMN

1 INTRODUCTIONOne of the major objectives in the study of extraction column is to minimize column di-mensions to fulfill a certain specific separation process.This has led to the intensiveemployment of structured packings in extraction columns [1].One of the recentdevelopments targeted for greater interfacial areas without excessive dispersion is the useof structure packings contactive claiming advantages,such as lower fluid flow friction     

QH-1型扁环填料用于高液气比操作时的性能研究

在内径186mm有机玻璃塔中 ,对16和2 5QH 1型扁环填料的流体力学和传质性能进行了研究 ,得出了计算其压降、液泛气速、泛点填料因子、湿填料因子和液相总传质单元高度的关联式。并与16鲍尔环填料进行比较 ,结果表明 ,QH 1具有优良的流体力学和传质特性。     

Liquid Holdup and Axial Mixing in a Mixed Bed of Hydrophobic Catalyst and Hydrophilic Packing

Theoretical Foundations of Chemical Engineering - The dynamics of fluid motion in a mixed bed of the hydrophobic RCTU-3SM catalyst and hydrophilic SPP packing (3 × 3 × 0.2 mm) was...     

Characterization of a New Structured Packing by Computational Fluid Dynamics

The novel wire gauze structured packing PACK‐1300Y with high specific surface area was characterized by computational fluid dynamics. The main features of PACK‐1300Y were investigated including the dry and wet pressure drop as well as the height equivalent to a theoretical plate (HETP). Moreover, the flow structure of this packing was described via numerical simulations. To evaluate the amount of HETP and dry and wet pressure drop, 3D computational fluid dynamic modeling with respect to the Eulerian‐Eulerian multiphase approach was applied. The average relative errors were determined between the findings achieved from computational fluid dynamic simulation and experimental findings for mass transfer efficiency and wet and dry pressure drop, respectively.     

Lysine Adsorption on Cation Exchange Resin. IV. Temperature Effects on Equilibrium and Kinetics in Batch and Column Systems

Abstract

Ion exchange equilibria and kinetics are determined for lysine adsorption on the strong acid cation exchanger DIAION SK‐1B at temperatures of 25, 40, and 60°C. The ion exchange equilibrium is found to be independent of temperature. Conversely, the kinetics of ion exchange increases dramatically as the temperature is increased. Average ion exchange selectivity coefficients of 6.0 g/cm³ and 0.52 are obtained for the ion exchange of divalent and monovalent cationic lysine with hydrogen ion, respectively. Resin phase diffusivities are determined by fitting batch binary ion‐exchange data with a mass transfer model based on the Nernst‐Planck equations. As the temperature is increased from 25 to 60°C, the resin phase diffusivity increases from 0.04×10^?6 to 0.14×10^?6 cm²/s for divalent lysine and from 0.16×10^?6 to 0.55×10^?6 cm²/s for monovalent lysine. The combination of temperature‐independent ion exchange equilibria and faster mass transfer at higher temperatures results in higher dynamic binding capacity and more efficient desorption of lysine when ion exchange is operated at an elevated temperature. This behavior is confirmed by means of column adsorption/desorption experiments whose results are found to be in agreement with a model incorporating the equilibrium and mass transfer data obtained in this work.