Mass transfer in a flat plate membrane oxygenator was studied and a convective mass transfer modelfor instantaeous reversible oxygenation of Cassonian fluid was presented. Numerical solution of the model canbe obtained with finite difference method. When a

A model structure formed by the combination of crosslinked, trapped entanglement and carbon black-polymer chain networks has been developed for rubber vulcanizates with carbon black fillers. Based on thisstructure and the proposed mechanism of large deformation, the elastic free energy

A satisfactory account of reinforcement of rubber through the application of the theory of elasticity forits vulcanizates with carbon black fillers has been obtained. A statistical theory of reinforcement by carbonblack fillers and its characterization was developed. Three methods for

The performance curves of the synthetic gas compressor of a Kellogg-type ammonia plant are fitted bypolynomial models, and regression models are also presented for the vapor-liquid equilibrium of ammonia separa-tion process and the loop pressure drop. The refrigeration duty required for the

The flow patterns and velocity distributions for the flow of highly-viscous fluid in the agitated vessel withan anchor impeller were obtained by means of streak photography using selective illumination of the vessel andpolystyrene pearl as tracer particle. Equations of velocity distribution,

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

For the purpose of production of soda by the urea melt left from the reactor by reaction with NaCl, the phase diagram of the Na~+, NH_4~+/HCO_3~-, Cl~-, (NH_2)_2 CO, H_2O system has been studied. In comparison with the Na~+, NH_4~+/HCO_2~-, Cl~-, H_2O system, the amount of water content

The background, history and development of numerical modeling of suspension two-phase flows and their combustion are reviewed. Different models, including single-fluid model, particle trajectory model, multifluid model and continuum-trajectory model, their numerical procedure and application are discussed. The advantage and drawback of these models are analyzed. Finally, the prospect of development is described and the contributions made by the present author are also incorporated.

The intrinsic and global kinetics of methanol synthesis from carbon monoxide, carbon dioxide and hydrogen in the presence of C301 commercial catalyst is studied. The investigation is performed under typical commercial conditions in an isothermal plug-flow integral reactor and an

For multiple reaction system of methanol synthesis in the presence of Cu-based catalyst, hydrogenation reactions of CO and CO_2 are selected as key reactions. A diffusion model, taking CO and CO_2 as key components, is presented for the calculation of the intraparticle effectiveness factors of the two parallel key reactions over C301 Cu-based catalyst. Numerical solutions of the effectiveness factors

Peng-Robinson equation of state was modified to represent vapor-liquid equilibria for hydrogen-containing systems. A new expression of the temperature dependent parameter for the supercritical gas hydrogen, and the binary interaction parameters were introduced to improve the description of VLE for 19 binary systems. Results show that this work is superior to the previous work. Moreover, estimations of PVT behavior, the second virial coefficients for hydrogen, and predictions of the volumetric properties of liquid mixtures and VLE for the ternary systems are in good agreement with the experimental data.

Condensation heat transfer of vapor-gas mixture in turbulent downflow through a vertical annulus has been studied. An analytical model, relatively simple in computation, is developed using available correlations for the interfacial shear stress, heat and mass transfer coefficients. The solutions obtained for steam-air mixtures agree well with experimental data of Stewart et al. and Kasprzak and Podpora. The effects of main stream Reynolds number and radius ratio r* are found to be significant for flow condensation of mixtures in annuli.

This report makes a systematic study of flooding in vertical tubes, and gives a clear definition of two types of flooding; investigates and analyzes the influence factors on flooding, especially the influence of tube ends. It puts forward the flooding correlations in sharp-edged tubes as well as in tapered end tubes, and points out the ways to raise the flooding velocities. All the above theories and correlations are tested and verified by the experimental results.

The Polanyi-Dubinin equation was used to predict adsorption isotherms for eight organic vapors at 25℃and for two organic vapors at 25℃, 40℃and 60℃on activated carbon in this analysis. The theoretical affinity coefficient, β, was calculated by three methods (molar volume, molecular parachor and electronic polarization) based on nonpolar and polar reference vapors.