膜电解法再生碳酸钾脱碳溶液(英文)

In this work, the regeneration mechanism of potassium carbonate solution after absorption of CO2 using ion-exchange membrane electrolysis was presented. The solutions of potassium carbonate (K2CO3) and potassium bicarbonate (KHCO3) were used to simulate the solution after absorbing CO2. Experiments were carried out at various electrodes, temperatures and current densities. The results indicate that the membrane electrolysis can increase concentration ratio of K2CO3 and KHCO3, and achieve 100% conversion. In this process, not only CO2 is desorbed from carbonate solution, but also hydrogen, as a byproduct, is generated at the cathode, which is the main contributor to reduce energy consumption. Thus, the membrane electrolysis is valuable in the regeneration of the K2CO3 absorbent.     

QH－1型扁环的研究和应用

介绍了ＱＨ－１型扁环的研究和开发。讨论了ＱＨ－１型扁环填料的数学模型和设计放大，并举例说明了这种填料的工业应用。     

INFLUENCE OF HEIGHT/DIAMETER RATIO AND INCLINATION OF SINGLE SMR PACKING ON FLOW FIELD

ＩＮＴＲＯＤＵＣＴＩＯＮＲａｎｄｏｍ ｐａｃｋｉｎｇｉｓｗｉｄｅｌｙｕｓｅｄｉｎｍａｎｙｕｎｉｔｏｐｅｒａｔｉｏｎｓ[1] .Ｆｌｏｗｆｉｅｌｄｉｎｓｉｄｅａｒａｎｄｏｍｐａｃｋｅｄｂｅｄａｆｆｅｃｔｓｔｈｅｈｙｄｒｏｄｙｎａｍｉｃａｎｄｍａｓｓｔｒａｎｓｆｅｒｅｆｆｉｃｉｅｎｃｙ .Ｓｔｕｄｙｏｎｔｈｅｆｌｏｗｆｉｅｌｄｏｆｒａｎｄｏｍｐａｃｋｉｎｇｉｓｅｓｓｅｎｔｉａｌｆｏｒｉｍｐｒｏｖｉｎｇｈｙｄｒｏｄｙｎａｍｉｃａｎｄｍａｓｓｔｒａｎｓｆｅｒｐｅｒｆｏｒｍａｎｃｅ ,ｗｈｉｌｅｆｌｏｗｆｉｅｌｄｉ…     

表面活性剂溶液中单液滴的非稳态运动

A numerical investigation of the unsteady motion of a deformed drop released freely in another quiescent liquid contaminated by surfactant is presented in this paper. The finite difference method was used to solve numerically the coupled time-dependent Navier-Stokes and convective-diffusion equations in a body-fitted orthogonal coordinate system. Numerical simulation was conducted on the experimental cases, in which MIBK drops with the size ranging from 1.24 mm to 1.97 mm rose and accelerated freely in pure water and in dilute sodium dodecyl sulphate (SDS) aqueous solution. The applicability of the numerical scheme was validated by the agreement between the simulation results and the experimental data. Both the numerical and experimental results showed that the velocitytime profile exhibited a maximum rising velocity for drops in SDS solutions, which was close to the terminal velocity in pure water, before it dropped down to a steady-state value. The effect of the sorption kinetics of surfactant on the accelerating motion was also evaluated. It is also suggested that introduction of virtual mass force into the formulation improved obviously the precision of numerical simulation of transient drop motion.     

MDEA+2,3-丁二酮水溶液对CO_2吸收速率的测定

采用恒定容积法测定了不同条件下混合溶剂(w(MDEA)48 5%+w(2,3 丁二酮)5%+水)吸收CO2的吸收速率。结果表明,在相同条件下,较高温度下的吸收速率较高;随着溶剂中CO2平衡浓度的增加,表观吸收速率常数降低;相同条件下,本文使用的混合溶剂吸收CO2的速率高于其他两种混合溶剂(w(MDEA)48 5%+水;w(MDEA)48 5%+w(环丁砜)5 0%+水)。     

QH—1型扁环填料的气液接触性能

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。     

A STUDY ON MASS TRANSFER IN PULSED SIEVE-PLATE EXTRACTION COLUMN

Mass transfer experiments have been carried out in a 40mm diameter pulsed sieve-plate extraction column. Both standard and "dispersion-coalescence" type cartridges were tested with 30％ TBP (kerosene as diluent)/ Nitric Acid/Water system. "Ture" volumetric mass transfer coefficient and backmixing     

QH-1型填料在中等界面张力体系的应用──I.流体力学性能

通过对ＱＨ－１型扁环填料在中等界面张力体系中的流体力学性能的研究，得到了两相流动特性模型和分散相液滴直径的半经验关联式，并对ＱＨ－１型填料萃取塔连续相出口的夹带情况进行了检测．实验表明，在中等界面张力体系中，该填料仍具有通量大、夹带少的优点，为该种填料在湿法冶金、医药、环保等工业领域的应用提供了实验和理论基础．     

搅拌槽内黏性流体流动的DPIV测量与CFD模拟

搅拌槽是化学工业及其相关工业广泛应用的设备之一,由于其内部流动的复杂性,搅拌混合操作目前尚未形成完善的理论体系．对搅拌槽的设计和放大,主要是依赖半经验的方法,对其内部流场有必要进行更深入的研究．目前对不同黏性流体的流动测量及计算流体力学模拟工作见诸报道较少,而     

环己酮和环己酮肟在甲苯-磷酸缓冲溶液中的液液平衡

以肟化塔的优化操作为背景,测定了环己酮肟和环己酮在甲苯和磷酸缓冲溶液中的分配系数,考察了pH值和磷酸根浓度等因素对其平衡关系的影响。并在此基础上总结了半经验公式,可用于肟化塔的设计和操作分析。利用Margules方程对环己酮的平衡数据进行了关联,求出了相应的模型参数,并结合实际,就有关实验结果进行了分析和讨论。