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SCI和EI收录∣中国化工学会会刊
本期目录
1999年 第7卷 第1期 刊出日期:1999-03-28
    Volume 7
    Effect of Sudden Increase of Solid Feed Rate on the Arching in Hoppers Connected to a
    Standpipe with Interstitial Gas Flow
    景山, 李洪钟
    . 1999, 7(1):  1-9.  doi:
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    In this paper, a model is proposed for the prediction of the width of arching in hoppers
    resulted from sudden changes in solid feed rates. Such changes in solid feed rate usually
    come from the collision on the surface of the moving-bed in the standpipe. The model also
    takes into account the effect of the powder height in the standpipe of the hopper. The
    model proves to be adaptable for predicting operational conditions to avoid arching by
    keeping constant powder height in the main standpipe with interstitial gas flow.
    Comparison of perturbation theory and mean spherical approximation based on molecular
    simulation data
    刘文彬, 李以圭, 陆九芳
    . 1999, 7(1):  10-19.  doi:
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    A comprehensive study on various internal energies for the dipolar hard sphere fluids,
    including Stockmayer fluids, the mixtures of Lennard-Jones and Stockmayer and Stockmayer
    fluids and the electrolyte solutions is reported based on the perturbation theory and mean
    spherical approximation. Compared with the results of molecular simulations, it is shown
    that the perturbation theory is better than the mean spherical approximation.
    Dimension Reduction Method in Thermodynamics of Multireaction Systems*
    Residual Properties, Property Changes of Mixing and Excess Properties Relations
    李浩然, 陈志荣, 韩世钧
    . 1999, 7(1):  20-26.  doi:
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    Based on the fundamental thermodynamic principle the relationships of the residual
    properties, the property changes of mixing and the excess properties between the
    hypothetical solution of unreacted independent species and the equilibrated solution of
    actual species have been established. The hypothetical solution provides a way of reducing
    the dimensionality of problem and simplifying the analysis.
    Prediction of Liquid Viscosities of Petroleum Fractions
    王仁远, 时钧
    . 1999, 7(1):  27-29.  doi:
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    A general equation is proposed for predicting the liquid viscosities of petroleum fractions
    based on a generalized pseudocompound method in which pure hydrocarbons and undefined
    hydrocarbon mixtures or petroleum fractions are treated as a hypothetical pure substance
    called pseudocompound which is characterized only by a boiling point and a density. T he
    equation is tested by using the liquid viscosities of the petroleum fractions of typical
    American crude oils and crude oils from major oil producing areas. Good agreement between
    the predicted and experimental viscosities for the petroleum fractions is obtained.
    Membrane Microfiltration Fermentation of Glucose Oxidase with Cell Recycling
    储炬, 江洁, 李友荣, 俞俊棠
    . 1999, 7(1):  30-37.  doi:
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    Membrane microfiltration fermentation (MMF) with cell recycling was successfully applied to
    the production of glucose oxidase (GOD). A plate microfiltration module was found suitable
    for such purpose. By feeding whole medium in MMF, the productivity of GOD was much higher
    than that by feeding glucose alone. With increasing dilution rate the enzyme productivity
    increased and average enzyme activity decreased. The enzyme productivity of MMF under D =
    0.12 h-1 and 0.20 h-1 were 3871 and 3945 U.h-1 respectively, which was about 3 times as
    that of batch fermentation (BF) and the average enzyme activity was still as high as 37
    U.mL-1 under D = 0.12 h-1. The relative efficiency of MMF applied to low yield strain was
    higher than that applied to high yield strain.
    Demulsification of Emulision Liquid Membrane by Wetting Coalescence Materials
    孙德智, 段晓东, 姜兆华, 周定
    . 1999, 7(1):  38-46.  doi:
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    Demulsification of emulsified water-in-oil droplets was worked out with the employment of
    wetting coalescence materials. Demulsification is carried out in conventional stirred-
    column and packed-column. Among the four kinds of natural fibers and two kinds of inorganic
    materials tested, natural fiber A, originated from wood shavings was found to give the best
    performance of demulsification. The demulsification efficiency can exceed 96.5% when
    demulsification conditions are optimized. The packed-column showed much better performance
    both in terms of demulsification efficiency and repeated use of the recovered oil phase for
    extracting cadmium in simulated wastewater. Operating variables governing the
    demulsification efficiency were investigated.
    Sulfation Kinetics in the Preparation of Cellulose Sulfate
    姚善泾
    . 1999, 7(1):  47-55.  doi:
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    In the established apparatus, the conversion ratios of cellulose sulfation (X) under
    different sulfation conditions were measured. The range of temperature is from -5 ℃ to +5
    ℃, and the H2SO4 concentration is from 3.1 mol× L-1 to 4.5 molL-1. The experimental
    results were used for the establishment of the kinetic model for cellulose sulfation. With
    the model X values and yield of NaCS Y can be calculated, thus the reaction in accordence
    with H2SO4 concentration was determined to be third order3.
    A Numerical Study on Fully Developed Fluid Flow and Heat Transfer in a Spiral Finned Tube
    张建文, 张政
    . 1999, 7(1):  56-66.  doi:
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    In this paper, the standard k-ε two-equation model is adopted to numerically simulate
    fully developed fluid flow and heat transfer in a spiral finned tube within a cracking
    furnace for ethylene manufacturing. By variable transformation, the original 3-D problem is
    converted into a 2-D problem in spiral coordinates. The algorithm of SIMPLEC is used to
    study the fully developed fluid flow and heat transfer in the spiral finned tube at
    constant periphery temperature and constant axial heat flux. The computed results agree
    pretty well with the experimental data obtained from the industry. Further studies on the
    fluid flows and temperature profiles at different Reynolds numbers within straight and
    spiral finned tubes are conducted and the mechanisms involved are explored. It is found
    that with the spiral finned tube, pressure drop increases to a great extent whereas heat
    transfer tends to be decreased.
    Modeling and Analysis of Internal Heat Integrated Distillation Columns
    黄克谨, 战德志, 中岩(月劵), 中根墝, 高松武一郎
    . 1999, 7(1):  67-76.  doi:
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    A generalized steady-state model is being developed for an internal heat integrated
    distillation column (IHIDiC). A procedure incorporating the Newton-Raphson method is
    devised for solving the model equations.Separation of an ethanol-water binary mixture is
    simulated and analyzed with the model. Two pinch points are found within the process,
    making the separation extremely difficult and expensive. Two sharp fronts in the
    temperature and the composition profiles are being observed. With the introduction of heat
    integration, satisfactory separation may be obtained in a limited number of stages with
    lower reflux ratios. Increasing the pressure difference between the rectifying and the
    stripping sections, however, would bring about a reduced relative volatility between the
    two components involved, creating adverse separation performances. It is obvious that
    optimization of the IHIDiC is of prime importance.
    RESEARCH NOTES
    Study on Liquid Phase Ammoniation of Adipic Acid to Adiponitrile
    高峰, 鲁波
    . 1999, 7(1):  77-82.  doi:
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    Vapor-Liquid Equilibria for Dimethyl Carbonate-n-Butyl Acetate Binary System at 101.325kPa
    施云海, 李文清, 涂晋林
    . 1999, 7(1):  83-85.  doi:
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    Production of D-p-Hydroxyphenylglycine From DL-5-p-Hydroxyphenyl Hydantoin by Immobilized
    Pseudomonas Putida Cells in a Hollow Fiber Memgrane Bioreactor
    张铭俊, 张衍坤, 李京华, 李曙光, 虞星炬
    . 1999, 7(1):  86-90.  doi:
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    Removal of Thiophene from Coke-Chemical Benzene by Liquid Adsorption on Modified ZSM-5
    Synthetic Zeolite
    谭小耀, 王祥生
    . 1999, 7(1):  91-94.  doi:
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