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  • Chemical Engineering  (4)
  • 2005-2009
  • 1990-1994
  • 1970-1974  (4)
  • 1971  (4)
  • 1
    Electronic Resource
    Electronic Resource
    The motion of vapor bubbles growing in uniformly superheated liquids (1971)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 1452-1458 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The motion of simultaneously rising and growing vapor bubblesin a uniformly superheated liquid is analyzed, and the predicted bubble velocities are shown to be in good agreement with available data. Using a quasisteady state approximation to describe the drag, and existing bubble growth theory to describe the growth rate, the equation of motion is solved for two ranges of bubble size encountered in nucleate boiling. For smaller bubbles (R〈0.04 cm.) an analytical solution is obtained, and for larger bubbles (R〉0.07 cm.) a numerical solution and analytical asymptotic solutions are obtained.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690170629
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  • 2
    Electronic Resource
    Electronic Resource
    Hydrodynamic measurements for imperfect mixing processes: Newtonian Fluids (1971)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 1387-1393 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The response of a continuous flow mixing system to a step change in an input variable is discussed from the standpoint of dimensional analysis. This idea is presented as an alternative to using zone models for predicting residence time distributions in systems where imperfect mixing occurs.Mixing experiments were performed in a cylindrical flat bottomed tank geometrically similar to tanks commonly used for industrial processes. The response of the system to a step change in feed concentration was observed. Initially the tank contained a salt solution. At the start of an experiment, a stream of salt-free diluent was introduced at the top of the tank and a stream of the salt solution was drained from the bottom, keeping the liquid volume in the tank constant. The salt concentration in the output stream was measured continuously after the start of the experiment.The experimental results are correlated in terms of dimensionless variables, and the variables affecting the mixing process most strongly are determined. The results show that variations in throughput rate or in impeller shape or rotational speed affect the mixing process much more than does impeller position. The data are also compared with models proposed by other authors, and the model constants are evaluated.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690170620
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  • 3
    Electronic Resource
    Electronic Resource
    Use of the donnan equilibrium principle to concentrate uranyl ions by an ion-exchange membrane process (1971)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 17 (1971), S. 1006-1008 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: No. Abstract.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690170443
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  • 4
    Electronic Resource
    Electronic Resource
    The polymer-forming reactions of 3,3,3-trichloropropylene oxidePresented in part, at the may 1970 meeting of the Society of Plastic Engineers, New York, N. Y. (1971)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 11 (1971), S. 312-319 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 3,3,3-Trichloropropylene oxide (TCPO) is a monomer which has the combination of a highly reactive epoxide group and a stable trichloromethyl group. The epoxy group will undergo ring opening polymerizations with itself and with a host of other compounds to yield polymeric materials. Water, alcohols, phenols, amines, carboxylic acids and many other compounds react with TCPO with the aid of Lewis acid type catalysts. The electron-withdrawing influence of the trichloromethyl group, steric effects and the oxirane ring have a strong influence on the course of reactions, which are often radically different from that encountered with the simpler alkylene oxide monomers.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760110408
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