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2.4.2 Prediction of Normal Boiling Point
2.4.2.1 Riazi–Daubert Correlations 58 CONTENTS vii
58
2.4.2.2 Soreide Correlation 58
2.4.3 Prediction of Specific Gravity/API Gravity 58
2.5 Prediction of Critical Properties and Acentric
Factor 60
2.5.1 Prediction of Critical Temperature and
Pressure 60
2.5.1.1 Riazi–Daubert Methods 60
2.5.1.2 API Methods 60
2.5.1.3 Lee–Kesler Method 60
2.5.1.4 Cavett Method 61
2.5.1.5 Twu Method for T c , P c , V c , and M 61
2.5.1.6 Winn–Mobil Method 62
2.5.1.7 Tsonopoulos Correlations 62
2.5.2 Prediction of Critical Volume 62
2.5.2.1 Riazi–Daubert Methods 62
2.5.2.2 Hall–Yarborough Method 63
2.5.2.3 API Method 63
2.5.3 Prediction of Critical Compressibility
Factor 63
2.5.4 Prediction of Acentric Factor 64
2.5.4.1 Lee–Kesler Method 64
2.5.4.2 Edmister Method 65
2.5.4.3 Korsten Method 65
2.6 Prediction of Density, Refractive Index, CH Weight
Ratio, and Freezing Point 66
2.6.1 Prediction of Density at 20 C 66
◦ ◦
2.6.2 Prediction of Refractive Index 66
2.6.3 Prediction of CH Weight Ratio 68
2.6.4 Prediction of Freezing/Melting Point 68
2.7 Prediction of Kinematic Viscosity at 38
and 99 C 70
◦ ◦
2.8 The Winn Nomogram 73
2.9 Analysis and Comparison of Various
Characterization Methods 75
2.9.1 Criteria for Evaluation of a Characterization
Method 75
2.9.2 Evaluation of Methods of Estimation of
Molecular Weight 76 --`,```,`,``````,`,````,```,,-`-`,,`,,`,`,,`---
2.9.3 Evaluation of Methods of Estimation of
Critical Properties 77
2.9.4 Evaluation of Methods of Estimation of
Acentric Factor and Other Properties 81
2.10 Conclusions and Recommendations 82
2.11 Problems 83
References 84

Chapter 3—Characterization of Petroleum Fractions 87
Nomenclature 87
3.1 Experimental Data on Basic Properties of
Petroleum Fractions 88
3.1.1 Boiling Point and Distillation Curves 88
3.1.1.1 ASTM D86 88
3.1.1.2 True Boiling Point 89

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