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Enthalpies of methane-light hydrocarbon binary mixtures in the vapor phase

✍ Scribed by Wayne C. Edmister; Lyman Yarborough

Publisher
American Institute of Chemical Engineers
Year
1963
Tongue
English
Weight
1019 KB
Volume
9
Category
Article
ISSN
0001-1541

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✦ Synopsis

The isothermal effects of pressure and composition on the mixture and partial enthalpy differences of the methane-propane binary were derived from PVTy data. A graphical and numerical technique was used to derive the enthalpy differences from 100Β° to 46OOF. and 200 to 2,000 Ib./sq. in. abs. for the complete composition range of the binary.

The isothermal effects of pressure and composition on the mixture enthalpy data of the methane-propane binary were also calculated with the Benedict-Webb-Rubin and the Redlich-Kwong equations of state. The results of the three methods of calculation are compared. The comparison showed that the two-constant Redlich-Kwong equation of state is as good as the eight-constant Benedict equation of state in the superheated vapor region.

The data derived i n this work were combined with other methane binary enthalpy data from the literature t o construct a general correlation of the effect of pressure and composition on the enthalpy of methane-light hydrocarbon binaries. The correlating porameters are the pseudo reduced temperature and pressure and a mole-average acentric factor. . --. Pseudo Acentric Foclor.Wpm

Fig. I . Mixture enthalpy difference of methane binaries as a function of the pseudo acentric factor.

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