Petroleum fractions thermophysical properties

From the analytical results, it is possible to generate a model of the mixture consisting of an number of constituents that are either pure components or petroleum fractions, according to the schematic in Figure 4.1. The real or simulated results of the atmospheric TBP are an obligatory path between the experimental results and the generation of bases for calculation of thermodynamic and thermophysical properties for different cuts. 

Riazi, M.R. (1979), "Prediction of thermophysical properties of petroleum fractions". Ph. D. Thesis, Dpt of Chem. Eng., The Pennsylvania State University, PA. 

Before proceeding, we mention sources for a few areas not covered in this chapter. Basic chemical thermodynamics is the subject of Chapter 4. For polymers and their solutions, the Polymer Handbook [1] is an indispensable source, and more on polymer thermophysical properties may be found in two books from AIChE s DIPPR project [2, 3]. The estimation of properties of mixtures described by distillation curves (typically petroleum fractions), or of the pseudocomponents derived from such curves, is covered in the AP7 Technical Data Book [4]. Many molecular data, such as dipole moments and spectroscopic constants, are tabulated in the NIST Chemistry Webbook [5]. 

THERMOPHYSICAL PROPERTIES OF NARROW FRACTIONS OF MANGYSHLAK PETROLEUM. 

Crude oils and petroleum fractions are the most important feedstocks for refining processes. To properly simulate the refining processes, we must have good understanding of the compositional information and thermophysical properties of cmde oils and petroleum fractions. However, the complexity of molecular composition of cmde oils and petroleum fractions makes it hardly possible to identity individual molecules. Instead, modern refiners use assay to characterize cmde oils and petroleum fractions. 

This chapter discusses several key modeling steps regarding thermophysical properties of crude oil and petroleum fractions. The basic process for developing a set of pseudocomponents for modeling refinery fractionation systems is as follows ... 

This completes our description of the Aspen H YSYS Petroleum Refining model. In subsequent sections, we discuss issues of thermophysical properties, fractionation and feed lumping. These issues are not specific to a simulation program and apply generally to any model of a reforming process. 

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