ISSN:0001-1541    

DOI:10.1002/aic.690080502

出版商:American Institute of Chemical Engineers    

年代:1962

数据来源: WILEY

摘要:

AbstractExperimental kinetic data are most conveniently correlated by the integrated form of the differential rate equations which the reactions are presumed to obey. A new method of obtaining an approximate integral solution of the differential equations is described and applied to a set of three consecutive competitive reactions.The approximate integral solution is used to correlate experimental data on systems whose stoichiometry would indicate a consecutivecompetitive mechanism. The compositions of the reaction mixes are predicted with a standard error of estimate of less than 4% of the original concentration of the initiating reactant, in most cases less than 2%. The estimates of the rate constants, found by fitting the approximate solution to the data, are within experimental error of the values obtained by differentiation of the published results.

ISSN:0001-1541    

DOI:10.1002/aic.690080503

出版商:American Institute of Chemical Engineers    

年代:1962

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690080504

出版商:American Institute of Chemical Engineers    

年代:1962

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690080505

出版商:American Institute of Chemical Engineers    

年代:1962

数据来源: WILEY

摘要:

AbstractIn the course of research the authors have collected a number of transfer functions for various types of heat exchangers. For the convenience of analysis the heat exchangers may be classified into several basic types described in subsequent pages. In each case certain assumptions are made when one writes down the differential equations of the heat exchanger, which constitute the so‐calledmathematical modelof the exchanger. If a particular heat exchanger is being classified, it is important to know the nature of temperature variation and the relative directions of flow of the exchanging fluid streams. If the heat exchanger in question matches one of the types described, then the transfer functions listed may be used to obtain its theoretical frequency and transient response

ISSN:0001-1541    

DOI:10.1002/aic.690080506

出版商:American Institute of Chemical Engineers    

年代:1962

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690080507

出版商:American Institute of Chemical Engineers    

年代:1962

数据来源: WILEY

摘要:

AbstractA series of reduced state correlations for the prediction of equilibrium constants for the components of binary hydrocarbon systems have been developed utilizing experimental vapor‐liquid equilibrium data reported by Kay (7,8,9) for the enthane‐n‐heptane, ethane‐n‐butane, andn‐butane‐n‐hepane systems. Each correlation applies for a specific values of τ = Tbh/Tbl, the ratio of the normal boiling points of the two components. Plots of β/β° vs. TRcovering the complete range of liquid compositions are presented for values of τ = 1.10, 1.20, 1.40, 1.60, 1.80, and 2.00. The term β° represents the reduced vapor pressure of the pure substance, while β is the ratio of the pseudo vapor pressure of this substance in the mixture, Kπ, to the critical pressure of the mixture.The correlations presented in this study reproduce the experimental data used in their development with an average deviation of 2.3% for forty‐eight points, with the experimental critical constants reported by Kay. The reliability of these correlations has been tested with the propane‐isopentane, methane‐ethane, and ethane‐cyclohexane systems which have τ values in the range included in this study and for which experimental critical constants are available. An average deviation of 5.1% was produced for thirty‐six points. In addition the systems methane‐propane, propane‐benzene, nitrogen‐oxygen, and carbon dioxide‐n‐butane were tested with calculated values for their critical constants and produced average devia

ISSN:0001-1541    

DOI:10.1002/aic.690080508

出版商:American Institute of Chemical Engineers    

年代:1962

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690080509

出版商:American Institute of Chemical Engineers    

年代:1962

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690080510

出版商:American Institute of Chemical Engineers    

年代:1962

数据来源: WILEY

摘要:

AbstractAgitation and blending studies were made with solutions of Natrosol 250H, which were pseudoplastic fluids with nonconstant flow‐behavior indexes. The published power number‐Reynolds number correlation for pseudoplastic fluids having constant flow‐behavior indexes is valid for Natrosol solutions. Published correlations for blend times in Newtonian fluids do not apply to Natrosol solutions; the blend times are ten to fifty times longer than with Newtonian fluids of the same apparent viscosity. Blend times are shortest in unbaffled vessels when a vortex is formed and correlate well with the vortex depths. Insertion of radial baffles always lengthened the blend

ISSN:0001-1541    

DOI:10.1002/aic.690080511

出版商:American Institute of Chemical Engineers    

年代:1962

数据来源: WILEY