Critical Properties of Hydrocarbon Systems

✍ Scribed by Hans Korsten

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 399 KB
• Volume: 21
• Category: Article
• ISSN: 0930-7516
• DOI: 10.1002/(sici)1521-4125(199803)21:3<229::aid-ceat229>3.0.co;2-p

✦ Synopsis

on the occasion of his 60th birthday

The main objective of this article is to provide a model for predicting critical properties of heavy and nonboiling hydrocarbon fractions. For this purpose, the methods available today are discussed. The procedures for application to complex mixtures are of empirical nature, and most of them are limited to distillates.

The detailed information required for application of group contribution methods is usually not available for complex heavy mixtures. A new procedure is presented which takes up the concept of group contributions. The critical properties are predicted on the basis of the molecular weight and the double-bond equivalent (DBE). Since the DBE can be calculated from molecular weight and elemental composition, even nonboiling fractions can be characterized. The exactness of the model depends on the available analytical information.