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Diffusion coefficients in hydrocarbon systems: n-heptane in the gas phase of the ethane–n-heptane and propane–n-heptane systems

✍ Scribed by L. T. Carmichael; B. H. Sage

Publisher
American Institute of Chemical Engineers
Year
1956
Tongue
English
Weight
500 KB
Volume
2
Category
Article
ISSN
0001-1541

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✦ Synopsis

Abstract

Because little information is available concerning the behavior of hydrocabons under conditions far from equilibrium, it appears desirable to obtain data for the diffusion coefficients of the lighter hydrocarbons in the gas phase.

The Maxwell diffusion coefficients of n‐heptane in the gas phase of the ethane‐n‐heptane and propane‐n‐heptane systems were measured at temperatures from 100° to 220° F. and for pressures up to 60 lb./sq. in. The fick diffusion coefficient was calculated as a function of state from these measurements.

The experimental results indicate that the interfacial resistance between the liquid and the gas phases into which the transport was taking place is small. It was found that pressure exerted a significant influence upon the Maxwell diffusion coefficient for both of the binary systems investigated. There is a marked decrease in the Maxwell diffusion coefficient with an increase in molecular weight of the stagnant component.

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Diffusion coefficients in hydrocarbon sy
Diffusion coefficients in hydrocarbon systems: Methane in the liquid phase of the methane–n-heptane system
✍ H. H. Reamer; B. H. Sage 📂 Article 📅 1957 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 545 KB

## Abstract The production and refining of petroleum involve many processes in which conditions deviate markedly from equilibrium. For prediction of the behavior of such nonequilibrium systems, information concerning the molecular‐transport characteristics of the paraffin hydrocarbons is of practic