摘要:

AbstractThe dynamics of change of molecular weight distribution in free radical polymerization systems was modelled using a continuous blending concept which recognizes that the changes of molecular weight distribution are caused by continuous blending of increments of new polymer formed by the reaction into the already existing polymer, continuous blending of polymer at various parts of reactor by diffusion and convection, and continuous blending of polymer from various parts of reactor into the final product. The models have been applied to the analysis of both lumped and distributed‐parameter systems using either empirical or mechanistic relations for molecular weight of new polyme

ISSN:0008-4034    

DOI:10.1002/cjce.5450510112

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1973

数据来源: WILEY

摘要:

AbstractThe Clausius equation was modified for the calculation of vapor‐liquid equilibria in binary and multicomponent systems. In the modification, the three parameters of the equation were considered temperature dependent. Molal volumes of saturated liquid and vapor together with the condition that the fugacities of the vapor and the liquid phase are equal at the condition of equilibrium were used for evaluating the parameters of pure components. Applications were made successfully to systems nitrogen‐methane, nitrogen‐oxygen, argon‐oxygen, nitrogen‐argon, argon‐methane, carbon dioxide‐hydrogen sulfide, carbon‐dioxide‐propane, hydrogen sulfide‐n‐butane and

ISSN:0008-4034    

DOI:10.1002/cjce.5450510113

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1973

数据来源: WILEY

摘要:

AbstractThe statistical thermodynamics of group interaction previously developed for liquids of chain molecules is extended to their mixtures. The theory is applied to pure n‐alkanone liquids, and solutions of n‐alkanone/n‐alkanone and n‐alkane/n‐alkanone systems. The interaction properties of methyl and methylene groups are taken from our previous work. The interaction properties of carbonyl group are determined and reported in this work. The calculated density and heat of vaporization of pure n‐alkanone‐2 liquids agrees with data over a wide temperature range. The calculated heats of mixing of n‐alkanone/n‐alkane and n‐alkanone/n‐alkanone solutions agre

ISSN:0008-4034    

DOI:10.1002/cjce.5450510114

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1973

数据来源: WILEY

摘要:

AbstractEnthalpies of two polar compounds: n‐pentanol and n‐hexanol have been measured by a flow calorimeter at temperatures between 300°F and 650°F and pressures up to 1,500 psia. The measurements covered the liquid, vapor, vapor‐liquid and critical regions. The experimental results were compared with values calculated by three methods for prediction of variation of enthalpy with p

ISSN:0008-4034    

DOI:10.1002/cjce.5450510115

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1973

数据来源: WILEY

摘要:

AbstractThe combined use of the structural parameter method and the multi‐level technique is proposed for optimal process system synthesis. An iterative procedure for implementing the technique is presented. The use of this technique is illustrated by synthesis of a reactor‐separator sys

ISSN:0008-4034    

DOI:10.1002/cjce.5450510116

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1973

数据来源: WILEY

摘要:

AbstractEighteen convergence criteria were studied for monitoring the relaxation solution of equations describing steady, Newtonian fluid flow perpendicular to circular cylinders. The criteria\documentclass[article}\pagestyle[empty}\begin[document}$$\{ Q_n^[100} \psi \cdot Q_n^[100} \zeta _b,Q_n^[100} \zeta _n \} $$\end[document}which represent sums of fractional changes in stream function and vorticity over 100 iterations, are shown to be the most suitable.

ISSN:0008-4034    

DOI:10.1002/cjce.5450510117

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1973

数据来源: WILEY

ISSN:0008-4034    

DOI:10.1002/cjce.5450510118

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1973

数据来源: WILEY

ISSN:0008-4034    

DOI:10.1002/cjce.5450510119

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1973

数据来源: WILEY

ISSN:0008-4034    

DOI:10.1002/cjce.5450510120

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1973

数据来源: WILEY

ISSN:0008-4034    

DOI:10.1002/cjce.5450510121

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1973

数据来源: WILEY