NATURAL GAS DEHYDRATION USING TRIETHYLENE GLYCOL (TEG) AHMAD SYAHRUL BIN MOHAMAD UNIVERSITI MALAYSIA PAHANG

Transcription

1 NATURAL GAS DEHYDRATION USING TRIETHYLENE GLYCOL (TEG) AHMAD SYAHRUL BIN MOHAMAD UNIVERSITI MALAYSIA PAHANG

2 UNIVERSITI MALAYSIA PAHANG BORANG PENGESAHAN STATUS TESIS PSZ 19:16 (Pind. 1/97) JUDUL : NATURAL GAS DEHYDRATION USING TRIETHYLENE GLYCOL (TEG) SESI PENGAJIAN : 2008/2009 Saya AHMAD SYAHRUL BIN MOHAMAD (HURUF BESAR) mengaku membenarkan tesis (PSM)* ini disimpan di Perpustakaan Universiti Malaysia Pahang dengan syarat-syarat kegunaan seperti berikut : 1. Tesis adalah hakmilik Universiti Malaysia Pahang. 2. Perpustakaan Universiti Malaysia Pahang dibenarkan membuat salinan untuk tujuan pengajian sahaja. 3. Perpustakaan dibenarkan membuat salinan tesis ini sebagai bahan pertukaran antara institusi pengajian tinggi. 4. **Sila tandakan ( ) SULIT (Mengandungi maklumat yang berdarjah keselamatan atau kepentingan Malaysia seperti yang termaktub di dalam AKTA RAHSIA RASMI 1972) TERHAD (Mengandungi maklumat TERHAD yang telah ditentukan oleh organisasi/badan di mana penyelidikan dijalankan) TIDAK TERHAD Disahkan oleh (TANDATANGAN PENULIS) Alamat Tetap: 12453, BATU 10, JALAN GONG BADAK, (TANDATANGAN PENYELIA) Pn Siti Zubaidah Bte Sulaiman Nama Penyelia K.TERENGGANU Tarikh : 21 APRIL 2009 Tarikh: 25 APRIL 2009

3 I hereby declare that I have read this thesis and in my opinion this thesis has fulfilled the qualities and requirements for the award of Bachelor s Degree of Chemical Engineering (Gas Technology). Signature Supervisor s name : : MRS SITI ZUBAIDAH BTE SULAIMAN Date :

4 NATURAL GAS DEHYDRATION USING TRIETHYLENE GLYCOL (TEG) AHMAD SYAHRUL BIN MOHAMAD Submitted to the Faculty of Chemical & Natural Resources Engineering in partial fulfillment of the requirements for the degree of Bachelor of Chemical Engineering (Gas Technology) Faculty of Chemical & Natural Resources Engineering University Malaysia Pahang APRIL 2009

5 ii I declare that this thesis entitled Gas Dehydration using Triethylene Glycol (TEG) is the result of my own research except as cited in the references. The thesis has not been accepted for any degree and is not concurrently submitted in candidature of any other degree. Signature :... Name : AHMAD SYAHRUL BIN MOHAMAD Date : 21 APRIL 2009

6 vii TABLE OF CONTENTS CHAPTER TITLE DECLARATION DEDICATION ACKNOWLEDGEMENT ABSTRACT ABSTRAK TABLE OF CONTENT LIST OF TABLES LIST OF FIGURES LIST OF ABBREVIATIONS LIST OF APPENDICES PAGE ii iii iv v vi vii x xi xii xiii 1 INTRODUCTION 1.1 Research Background 1.2 Problem Statement 1.3 Objective 1.4 Scope of Study LITERATURE REVIEW 2.1 Types of Dehydration of Natural Gas 2.2 Gas Dehydration 2.3 Dehydration Unit

7 viii 3 METHODOLOGY 3.1 Introduction 3.2 Flow Chart of Methodology 3.3 List of Material and Component Material Component Machine 3.4 Designing of Dehydration Unit 3.5 Fabrication of Dehydration Unit 3.6 Hydrostatic Test 3.7 Experimental of Dehydration 3.8 Analyze the Water Content RESULT AND DISCUSSION 4.1 Introduction 4.2 Designing, Fabrication and Testing of Dehydration Designing of Dehydration Unit Fabrication of Dehydration Unit Testing of Dehydration Unit 4.3 Effect of Operating Pressure on Dehydration 4.4 Effect of Volumetric Flowrate on Dehydration CONCLUSION AND RECOMMENDATIONS 5.1 Introduction 5.2 Conclusion 5.3 Recommendation

8 ix REFERENCES 36 APPENDICES A-I 39-49

9 x LIST OF TABLES TABLE NO. TITLE PAGE 2.1 The composition of natural gas Properties of glycol The various pressure test on dehydration unit The water content at different operating pressure The water content at different volumetric flowrate 32

10 xi LIST OF FIGURES FIGURE NO. TITLE PAGE 2.1 Molecular structure of triethylene glycol (TEG) Flow sheme of glycol unit Dehydrator unit Overall methodology flow process Overall dimension of dehydration unit The hydrostatic test Experimental of dehydration process Dimension of dehydration unit The components in fabrication of dehydration unit Effect of operating pressure toward dehydration Effect of volumetric flowrate toward dehydration 32

11 xii LIST OF ABBREVIATION CH 4 - Methane H 2 S - Hydrogen sulfide Al 2 O 3 - Aluminum oxide SiO 2 - Silicon dioxide TEG - Triethylene glycol EG - Ethylene glycol DEG - Diethylene glycol TREG - Tetraethylene glycol MEG - Monoethylene glycol C 2 H 6 - Ethane C 3 H 8 - Propane C 4 H 10 - Butane CO 2 - Carbon dioxide O 2 - Oxygen N 2 - Nitrogen PFR - Plug flow reactor

12 xiii LIST OF APPENDICES APPENDIX TITLE PAGE A B C Gantt chart for undergraduate research project 1 40 Gantt chart for undergraduate research project 2 41 Calculation of minimum level position of inlet natural gas,l 42 D Calculation of water content 43 E Calculation of volumetric flowrate 44 F Machines used in fabrication 46 G Engineering work 47 H Dimension of dehydration unit in solid work 48 I Fabricated dehydration unit 50