ACKNOWLEDGEMENTS

First of all, I would like to send my sincere thanks to all the lecturers in Hanoi University of Mining and Geology for creating favorable conditions for us to study, research and complete my graduation project.


I would like to thank the leaderships of Dinh Co Gas Processing Plant and PV Gas Vung Tau Terminal, who received me during my internship and the engineers at the control room who provided lots of valuable documents about the plant and terminal. I would also like to thank Mr. Quynh Pham Thanh and Mr. Hoang Nguyen Cong, engineers of Dinh Co Gas Processing Plant for their help during my graduation project.


Finally, I would like to express my gratitude to Associate Professor Dr. Thuy Bui Thi Le who guided me for my graduation project.


Thank you sincerely!



Hanoi, June 2, 2018
Student
Duong Van Dai












CONTENTS

1 – NATURAL GAS FUNDAMENTALS
.1. Concepts of natural gas
.1. Natural gas origin and sources
.2. Natural gas composition and classification
.2.1. Chemical composition
.2.2. Classification
.3. Natural gas properties
.3.1. Equations of state and gas density
.3.2. Saturated-vapor pressure
.3.3. Moisture and dew-point
.3.4. Viscosity
.3.5. Critical point
.3.6. Limits of Flammability
2–TECHNOLOGY PROCESS OF DINH CO GAS PROCESSING PLANT
.1. Overview of Dinh Co gas processing plant
.2. Process description
.2.1. Feedstock
.2.2. Products
.2.2.1. LPG
.2.2.2. Sales gas
.2.2.3. Condensate
.2.3. Main equipments
.2.3.1. Slug catcher (SC)
.2.3.2. C-01 De-ethanizer
.2.3.3. C-04 Gas stripper
.2.3.4. C-02 stabilizer
.2.3.5. C3/C4 Splitter
.2.4. Operating modes
.2.4.1. AMF mode
.2.4.2. MF mode ( by design )
.2.4.3. GPP mode ( by design )
.2.4.4. MGPP mode
3- BACKGROUND OF DISTILLATION COLUMN
.1. Vapor- Liquid Equilibrium
.1.1. Concept
.1.2. Equilibrium Vaporization Ratio
.1.3. Relative volatility
.1.4. Daltont’s Law
.1.5. Raoult’s Law for Vapor- Liquid Equilibrium of Ideal Solutions
.1.6. Ideal System and Non-ideal System
.2. Distillation Column Structure
.2.1. Description of Towers/ Columns
.2.2. Diameter
.2.3. Trays
.2.4. Operating principle of tower
.3. Vapor- liquid phase behavior calculation
.3.1. Bubble-point determination
.3.2. Dew-point determination
.3.3. Flash calculation
.4. Material Balance
.4.1. McCabe Thiele Method
.4.2. Material balance around the fractionators
.4.3. Material balance around top
.4.4. Material balance around bottom
.5. Overall Heat Balance
.5.1. Around the fractionators
.5.2. Around Top
.5.3. Around Bottom
.5.4. Enthalpy in a tray
.6. Calculation of Theoretical Plates
.6.1. Fenske’s Method for Minimum Theoretical Plates, S min
.6.2. Underwood Methods for Minimum Reflux