A modified Redlich—Kwong equation of state for accurately representing pure components data
✍ Scribed by R. Simonet; E. Behar
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 555 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0009-2509
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✦ Synopsis
Ah&act-A modified Redlich-Kwong equation of state is given for accurately representing the volumetric properties of non-polar hydrocarbons. It is presented under a generalized corresponding states form which permits the prediction of pure component properties from the critical properties and acentric factor. Moreover, the proposed equation is applicable up to high pressures (700 atm.) over a wide reduced temperature range (from 0.5 to 1.5 or even 2 in certain cases), including the saturations envelope and the immediate vicinity of the critical point.
📜 SIMILAR VOLUMES
A modified Redlich-Kwong equation of state is proposed. Vapor pressures of pure compounds can be closely reproduced by assuming the parameter a in the original equation to be temperature-dependent. With the introduction of the acentric factor as a third parameter, a generalized correlation for the m
new temperature dependence of the attractive part of the Redhch-Kwong equation 1s presented It has been deslgned to describe accurately vapour pressure of pure components, also at low reduced temperatures, usmg a mmlmum of expernnental data
The paper descrks three procedures to derive the pure-component parameters for a recently proposed Redbcl+Kwong type equation of state, which appltes to polar and nonpolar compounds and to morgamc gases Besrdes a ngorous procedure, a slmphfied one 1s described.. with the same accuracy, but much lowe
## Abstract A modified Redlich‐Kwong equation of state is developed in which the two parameters are expressed as functions of temperature. The critical values for the two constants in the equation are completely determined by the values of the critical properties of the gas. The optimum values of t