LY TRUONG TUNGADVANCED PROGAMR K6 NĂM(14) MINISTRY OF EDUCATION AND TRAINING HANOI UNIVERSITY OF MINING AND GEOLOGY LY TRUONG TUNG GRADUATION THESIS STUDYING THE TECHNOLOGY OF STORAGE, TRANSPORTATION LPG AT PV GAS VUNG TAU TERMINAL AND CALCULATING LPG TANK WITH CAPACITY OF 820M3 HANOI - 07/2020 INTRODUCTION Petroleum is a valuable resource that has been known by humans However, until the beginning of the 20th century, when technical science is developed The oil and gas were newly rated and used correctly in its importance In recent years, the oil and gas industry has continuously grown, after many years of exploration and search many oil and gas fields have been found, among which are typical ones such as Bach Ho field Su Tu Den fields, Dai Hung field, Rang Dong field, Lan Tay and Lan Do fields The exploitation and use of products have brought a great source of economic benefits Currently, the gas processing industry has grown strongly due to human demand to use clean raw materials and economically exploited from natural gas and associated gas fields Therefore, it is necessary to have a complete storage and distribution system of gas products in general and liquefied petroleum gas (LPG) and ensure fire and explosion safety This is also a matter of great concern when designing and constructing petrochemical refineries After finding research, collecting documents and obtaining the consent of the Oil and Gas Faculty of Hanoi University of Mining and Geology chose the topic for my thesis as "Studying the technology of storage transportation for refrigerated LPG at PV Gas Vung Tau Terminal and calculating LPG tank with a capacity of 820m3" The contents of the thesis include the main issues: - Overview of the Vietnam Gas Industry - Introduction of LPG, storage, and transportation of LPG - Study the technology of storage transportation for LPG at PV Gas Vung Tau Terninal - Calculating tank with capacity of 820m3 ACKNOWLEDGMENT In the process of doing the project, the large workload with limited time, so I can not avoid mistakes during the process of completing this thesis I hope all of our beloved teachers would review and help me perfect my project I am pleased to express my profound gratitude to Dr Cong Ngoc Thang and all the teachers of Oil and Gas Faculty - major in Oil refining and Petrochemistry have been dedicated to helping me carry out and gather the necessary figures for you to complete this thesis Thank you sincerely! Ha Noi Ly Truong Tung TABLE OF CONTEN INTRODUCTION .i ACKNOWLEDGMENT ii TABLE OF CONTENT iii LIST OF TERMINOLOGY vi LIST OF TABLE vii LIST OF DRAWINGS, GRAPHS viii LISH OF DIAGRAM ixY CHAPTER : OVERVIEW OF VIETNAM OIL AND GAS INDUSTRY .1 1.1 Introduce of natural gas .1 1.2 The origin of oil and gas 1.3 Composition and classification of natural gas 1.3.1 Composition 1.3.2 Classification .2 1.4 Gas processing 1.4.1 Removing mechanical impurities .3 1.4.2 Gas sweetening processes 1.4.3 Water separation 1.5 Application of gas product 1.5.1 Used as fuel 1.5.2 Used as a raw material 1.6 Overview of VietNam’s Gas Industry .5 1.6.1 Potential development of gas market in VietNam .5 1.6.2 Gas exploitation in Vietnam CHAPTER 2: INTRODUCTION OF LPG, STORAGE AND TRANSPORTATION LPG 2.1 Introduction of LPG 2.1.1 Properties of LPG 2.1.2 LPG Gas Manufacturing .11 2.1.3 LPG Uses 12 2.1.4 Benefits of LPG 13 2.2 Vietnam’s market gas 13 2.3 Transportation and Storage LPG 14 2.3.1 Transporting LPG 14 2.3.2 Storage of LPG 14 2.4 Type of tanks 15 2.4.1 Definition 15 2.4.2 Situation of building LPG storage tanks in Viet Nam 18 CHAPTER 3: THE TECHNOLOGY OF STORAGE, TRANSPORTATION FOR LPG AT PV GAS VUNG TAU TERMINAL 20 3.1 Overview of PV Gas Vung Tau refrigerated LPG storage .20 3.1.1 Systems and operating equipments for refrigerated LPG in refrigerated LPG storage 20 3.1.2 Systems and operating equitments for pressurized LPG in refrigerated LPG storage 23 3.1.3 Equipments List of of PV Gas Vung Tau refrigerated LPG storage 25 3.2 Overview of PV Gas Vung Tau pressurized LPG storage .33 3.2.1 OVERVIEW OF MAIN EQUIPMENTS 33 3.2.3 DESCRIPTION THE TECHNOLOGY OF IMPORT, STORAGE AND EXPORTING PRODUCT OF LPG STORAGE TANK 33 CHAPTER : CALCULATING LPG TANK WITH CAPACITY OF 820 M3 36 4.1 Theoretical calculations 36 4.1.1 Temperature .36 4.1.2 Working pressure, calculated pressure 36 4.1.3 Joint Efficiency 36 4.1.4 Additional coefficient calculated thickness 37 4.2 Tank selection and calculation parameters 37 4.2.1 Purpose of design LPG tank .37 4.2.2 Design options of LPG tank 38 4.2.3 Parameter of LPG storage 39 4.2.4 Material for construction 39 4.2.5 Select the welding method for the tank .40 4.3 Calculate the thickness of the body tank 40 4.3.1 The state of the calculation 40 4.3.2 Calculate the pressure when the tank contains LPG 40 4.3.3 Calculate the thickness of shell tank under internal pressure .41 4.4 Calculate the thickness the head tank 42 4.5 Calculate the total weight of tank 43 4.6 Fire explosion risk and mitigation for LPG tanks 43 CONCLUSIONS AND RECOMMENDATIONS 45 REFERENCE 46 LIST OF TERMINOLOGY ASME American Society of Mechanical Engineer APP Appendix BOG Boil-Off Gas BSR Binh Son Refinery CS Carbon Steel FIC Flow Indicating Controller GPP Gas Processing Plan LDA Loading Arm LCP Local Control Panel LPG Liquefied Petroleum Gas LSL Low Level Swtich MCR Main Control Room PCV Pressure Control Valve PSV Pressure Safety Valve PSLL Pressure switch low low SDV Shutdown Valve UCP Unit Control Panel LIST OF TABLE No Name of Table Content of table Page Table 2.1 Specifications of LPG Table 3.1 Parameters of piping 20 Table 3.2 Parameters of refrigerated propane tank 22 Table 3.3 Parameters of refrigerated butane tank 22 Table 3.4 Parameter of pressurized LPG tank 24 Table 3.5 High pressure controls the flare 24 Table 3.6 Requirements of equitment 25 Table 3.7 Equipment List 25 Table 4.1 Parameter of LPG storage 39 LIST OF FIGURE No Name of figure Content of figure Page Figure 1.1 Natural gas production in Vietnam 2009-2019 Figure 2.1 Fixed Roof Tanks 16 Figure 2.2 External floating roof and Internal floating roof 16 Figure 2.3 Horizontal Tank 17 Figure 2.4 Spherical Pressure Tank 18 Figure 2.5 Cylindrical Storage Tank 18 Figure 2.6 Storage Tanks in Dung Quat Refinery 19 Figure 3.1 Single Containment Tank 21 Figure 4.1 Structure of horizontal cylinder storage tank 38 10 Figure 4.2 Principal Dimensions of typical heads 42 LISH OF DIAGRAM No Name of Content of diagram Page diagram Diagram 3.1 Overview of refrigerated Propane transport, storage 26 technology of refrigerated LPG storage tank Diagram 3.2 Overview of refrigerated Propane transport, storage 29 technology of refrigerated LPG storage tank Diagram 3.1 The process of mixing Bupro products 32 3.2 Overview of PV Gas Vung Tau pressurized LPG storage 3.2.1 Overview of main equipments A outline of the main equipment is given below [13] a Propane storage - 18 tanks : SV 101 A-F; SV-102 A-F; SV-103 A-F b Butane storage – 13 tanks : SV 104 A-D; SV-105 A-F; SV-106 AC c Off spec bupro storage – tanks : SV-107 A-B d Condensate storage – tanks : TK – 101A/B e Loading arms - Jetty : LDA – 101 for Propane LDA – 102 for Butane LDA – 105 for Condensate - Jetty : LDA – 103 for Propane LDA – 104 for Butane f Vapor return arms - Jetty : VRA – 101 for Propane VRA – 102 for Butane - Jetty : VRA – 103 for Propane VRA – 104 for Butane g Product Loading pump - Propane loading pump P-101A/B/C - Butane loading pump P-102A/B/C - Condensate loading pump P-103A/B/C - Condensate loading pump P-103A/B/C 33 h Bupro Compressor Bupro compressor CMP-102A/B ( operating and stand by ) 3.2.3 Description the technology of import, storage and exporting product of LPG storage tank A parameter of the LPG storage tank : - Tank working capacity : 422 m3 - Demensions : 4.2m I.D x 34m T/T - Type of tank : Horizontal tank - Design Pressure : 17.25 kg/cm2 g - Design Temperature : -45 oC to 100 oC - Design Code : ASME SEC VIII Div I - Material : SA-516 Gr 70 - Radiography : 100% PV Gas Vung Tau Terminal is provided with 33 tanks for the storage propane, butane and bupro Group ( SV-101 A/B/C/D/E/F ), group ( SV-102 A/B/C/D/E/F ) and group ( SV-103 A/B/C/D/E/F ) are used to storage propane Group ( SV-104 A/B/C/D ) and group ( SV-105 A/B/C/D/E/F ) are used for butane storage Group of tanks consists of three tanks for butane storage (SV-106 A/B/C) and two tanks for off-spec bupro storage (SV-107 A/B) The incoming LPG from the GPP Dinh Co pipeline runs through individual FE-1011 (for propane) and FE-1012 (for butane) for inventory management and pipe leak detection, and is directed to storage tanks by a dedicated piping system Tanks are filled through a inches nozzle located at the top of the tank and emptied through an inches nozzle located at the tanks bottom The transmitters generate a high-level alarm as the level reaches to 80.7% of the tank diameter (3390 mm) At 81.4 % level of the tank (3420-mm) a high-level switch, provided on each tank, closes the shutdown valve on respective tank inlet line to prevent the further filling When any of the tank reaches the high level, i.e 34 82.6% (3470mm), a high level switch actuates the shutdown valve at the group inlet header to stop further filling of liquid in that bank [13] At each tank, there is a low level switch (LSL) to trip the respective propane/butane/bupro-loading pump Two pressure safety valves are provided on each tank to release excess liquid to flare in case of overfilling of the tank A emergency button is provided on the local panel located at each tank, which close all the inlet and outlet valves of the tank in case of emergency Three loading pumps are provided for each liquid product propaņe (P-101 A/B/C), butane (P-102A/B/C) each pump is having a capacity of 250 m 3/hr Besides, two off-spec bupro pump (P-108 A/B) are also provided The propane, butane, and off-spec bupro loading pumps are vertical multistage centrifugal pumps, and condensate pumps are horizontal centrifugal types Low-level switch (LSL) provided on all LPG tanks Pressure switch low low (PSLL) is provided at each pumping station discharge line This also stops the pumps in case there is some leakage in the line to jetty, and the pump discharge flow rate increases considerably The same switch also closes the shipping valve on tank outlet and discharge valves of the pumps FIC has been provided for pump recirculation of liquid product at each pumping station (FIC-1804 for bupro, FIC-1904 for propane, FIC-2004 for butane) Two jetties are provided for product loading to ships: Jetty - is equipped with loading and vapor return arms for propane (LDA-101; VRA-101) and butane (LDA-102; VRA-102) and Jetty is equipped with loading and vapor return arms for propane (LDA-103; VRA-103) and butane (LDA-104; VRA-104) [13] In case of propane and butane loading, the vapor return line has to be connected While in case of bupro loading, the vapor is compressed by compressor (CMP-102) and condensed in air cooler (E-102) After that condensed bupro is received at the receiver SV-108 and dent to off-spec bupro tank SV-107 A/B Pressure control stations are provide at individual PCV-112/PVC-1114 for butane vapor return, PVC-1113/PVC-1115 for propane vapor return [13] 35 CHAPTER CALCULATING LPG TANK WITH CAPACITY OF 820 M3 4.1 Theoretical calculations 4.1.1 Temperature An operating temperature is the temperature of environment at which an device operates.The calculated temperature of the walls and other details inside the equipment when the temperature of the environment is less than 25°C is equal to the highest temperature of the process's context 4.1.2 Working pressure, calculated pressure The working pressure is the pressure of the environment in the equipment produced during the process regardless of the instantaneous pressure increase (about 10% of the device's working pressure) The calculated pressure is the pressure of the device's environment, used as data to calculate the device according to durability and stability If the hydrostatic pressure of the equipment (containing liquid) is equal to 5% of the calculated pressure, it is ignored; if it is greater than 5%, the calculated pressure at the bottom of the device is determined as follows: P = Pm + g.ρ.Hl Where: N / m2 ( Eq 4.1 ) Pm is the working pressure of the environment, N / m2; g is the gravitational acceleration, m / s2 ρ is the density of the liquid, kg / m3 Hl is the height of the liquid column, m 4.1.3 Joint Efficiency When designing tanks separate parts are connected by welding Therefore, when calculating the durability of welded components, the weld resistance 36 coefficient E is added to the calculation formula, representing the strength of the joints compared to the strength of the base material 4.1.4 Additional coefficient calculated thickness When calculating the durability of components or parts of equipment, we need to care about the environment's chemical and mechanical effects on the device's construction materials Therefore, it is necessary to supplement the calculated thickness of those parts and parts with a quantity C The following formula determines quantity C : C = Ca+ Cb+ Cc+ C0 Where ( Eq 4.2 ) Ca is the additional factor due to environmental chemical corrosion Cb is the additional coefficient due to environmental mechanical Cc is the additional coefficient due to manufacturing equitment C0 is the additional coefficient to size The quantity of addition factor Ca depends on the chemical corrosion of the environment and the equipment's shelf life In general, the shelf life of chemical equipment is about 10 ÷ 15 years For chemical equipment, Cb coefficients can be excepted The coefficient C b is calculated only when the environment inside the equipment is moving at a velocity more than 20 m/s (for liquids) and more than 100m/s (for gases) The quantity Cc depends on the type of tanks and the manufacturing technology of equipment 4.2 Tank selection and calculation parameters 4.2.1 Purpose of design LPG tank Demand for LPG is growing, while the local supply has not kept up, only meeting about 45%, so LPG imports continue to be a solution to offset the shortage in the coming years In order to, maximize the efficiency of LPG import, it is necessary to have a modern LPG tank system suitable to the market demand 37 Therefore, within the structure of the thesis, I decided to choose an LPG tank capacity of 840 m3 The goal is designing an LPG tank with a satisfactory capacity such as - Location, area suitable for PV Gas Vung Tau Terminal - Suitable for market - Reasonable investment costs - Saving construction costs Fuel is LPG with the main components of C3 and C4 - Propane : 40 % mol - Butane : 60 % mol Density of LPG equal 0.5533 tons/m3 4.2.2 Design options of LPG tank Liquefied petroleum gas tanks currently include common types: - Spherical Tank - Horizontal Tank The horizontal cylinder tank, there are many options for diameter, length The dimension is most benefical for tank based on the following factors : - Volume of tank - Design pressure - Corrosion Allowance - Maxumum Allowable Stress Values The determination can be based on a graph according to the PRESSURE VESSEL 4*V HANDBOOK Using a equation to determine the length of tank: L= π*D Where L = Length of tank V= D= Volume of tank 38 Diameter (Eq4.3) Figure 4.1 Structure of horizontal cylinder storage tank 4.2.3 Parameter of LPG storage a Parameter to design LPG tank Table 4.1 : Parameter of LPG storage [13] Total Capacity Design Pressure Hydraulic Pressure Operate Pressure Desing Temperature Operate Temperature Radiography Normal Capacity Coefficient Wind Speed Corrosion b Applicable standards and references - ASME Section VIII Divison - ASME Section VIII Divison - Pressure Vessel Handbook 820 18 27 7.5 -10/50 25/50 100 0.85 m3 kG/cm2 kG/cm2 kG/cm2 C C % % 36 0.16 m/s cm c Determine the dimension of the tank Using Pressure Vessel Handbook[17] we can choose Di (diameter) is 4.2m The length of tank is determined by equation 4*V 4*820 = = 59.18 π * D π * (4.2) i L= Choose L = 60 m So that, dimension of tank is 4.2m I.D x 60m T/T 4.2.4 Material for construction 39 Select the material of carbon steel to make the equitment, the symbol of steel is SA-516 Gr70 CT3 steel is a steel with carbon content (accounting for 0.27 0.31) Therefore SA-516 Gr70 steel with good strength and flexibility, excellent impact strength, high strength low alloy steel structure provides excellent mechanical properties, high abrasion resistance Widely used in the petroleum industry, such as tank design, drilling structure 4.2.5 Select the welding method for the tank Welding steel plates make tanks made available to shape the design together.Basically, the steel plate must be welded vertically along with the tank, perimeter Choose machining technology: Manual electric arc welding, durable twobutt welded welding, welding type is the welding connection coefficients as follows: E = 4.3 Calculate the thickness of the body tank 4.3.1 The state of the calculation The calculation of the thickness of the tank shell should be based on two conditions of the tank: - State 1: Tank under internal pressure In this state, the tank contains fuel - State 2: Tank under external pressure In this state, the tank does not contain fuel (when stopped operating or finished manufacturing) In each state, the pressure acting on the tank shell is different The design must consider the dangerous working ability of the work, so perform calculations with the following two specific states: - State 1: Operation tank with design pressure and pressure test Both cases include the pressure due to the weight of the fuel acting on the tank - State 2: Empty tank, subject to atmospheric pressure only We should be determine the thickness of tank for case: with design pressure (Pd =18 kg/cm2) and test pressure (Pt = 27kg/cm2) In both case, the 40 calculatation is the same way, usually the thickness with P d is aways bigger, so for the scope of this thesis, only calculations are shown with this case 4.3.2 Calculate the pressure when the tank contains LPG This is an important parameter to calculate the thickness of tank The calculated pressure includes the design pressure plus the hydrostatic pressure of the liquid Using equation (4.1) we have : N / m2 P = Pd + g.ρ.hl Where: Pd is the design pressure, N / m2 g is the gravitational acceleration, m/s2 ρ is the density of the liquid, kg/m3 hl is the height of the liquid column, m We have : g.ρ.hl = 9.81*0.5533*103*4.2*0.85 = 19377.50 (N/m2) = 0.1975 (kg/cm2) P = 18 + 0.1975 = 18.1975 ( kg/cm2) 4.3.3 Calculate the thickness of shell tank under internal pressure Every point on the shell of steel pressure tank has two stress components : - Circumferential Stress - Longitudinal Stress Based on these two stress components, according to ASME SEC VIII Division PART UG UG27 (c)[18] required minimum thickness t will take the maximum of the two values calculated the following formulas: where We have : - t1 = PR / (SE – 0.6P) ( Eq 4.4 ) - t2 = PR / (2SE + 0.4P) ( Eq 4.5 ) E = Joint efficiency P = Internal design pressure (18.19 kg/cm2) R = inside radius of tank (210cm) S = maximum allowable stress (1225 kg/cm2) t1 = PR  2SE + 0.4P  18.1975* 210  3.147 = 1225  0.6*18.1975 (cm) 41 t2 = PR  2SE + 0.4P  18.1975* 210  1.555 = *1225  0.4 *18.1975 (cm) Comparing t1 > t2 so we can choose t1 Howerver, we need to care about the environment's chemical and mechanical effects on the device's construction materials So the thickness of shell tank under internal pressure is : t = t1 + Ca = 3.147 + 0.1 + 0.05 ≈ 3.3 (cm) 4.4 Calculate the thickness the head tank Tank head with tank body joins in a complete tank Tank top possible preformed or preformed composite from steel plates According to ASME SEC VIII Division APP 1, 1-3[18] have five common types of tank heads for tanks as follows: Figure 4.2 Principal Dimensions of typical heads[18] Calculate the thickness of formed head tank under internal pressure 42 In this case, we can choose Ellipsoidal 2:1 According to ASME SEC VIII Division APP1, 1-4 (c)[18] standard We have equation for Ellipsoidal Head is : PDK PDK t = 2SE - 0.2P = 2SE + 2P(K-0.1) where ( Eq4.5 ) E = Joint efficiency P = Internal design pressure (18.1975 kg/cm2) D = inside diameter of head tank (420cm) S = maximum allowable stress (1225 kg/cm2) K = a factor denpending on the head proportion D/2h h = one‐half of the length of the minor axis of the ellipsoidal head We can calculate value of K by equation : 2 �D �� � � 420 �� 1�  � �� 2� � � �� 2h �� � �2*110 �� � � K= = = 0.941 t= => PDK 18.1975* 420* 0.94   2.9 2SE + 2P(K-0.1) 2*1225*1 + 2*18.1975*(0.94 - 0.1) ( cm) Howerver, we need to care about the environment's chemical and mechanical effects on the device's construction materials So the thickness of head tank under internal pressure is : th = t + Ca = 2.896 + 0.1 + 0.05 ≈ 3.2 (cm) 4.5 Calculate the total weight of tank Looking for table XIII.11 ([19]) with the thickness of head tank th = 3.2 cm we have Mhead = 3444 kg The weight of body tank equal Mbody = ρ.V = ρ π  D t -D  L = 7830* 3.14*  4.2332 -4.22  *60 = 1.03*106 (kg) The weight of LPG contaning in tank MLPG = ρ LPG *V=0.5533*820 *10 * 0.85  3.85 *10 (kg) The weight of tank to determine by equation : Mt = 2Mhead + Mbody + MLPG = 2*3444 + 1.03*106 +4.54*105 = 1.5*106 (kg) 4.6 Fire explosion risk and mitigation for LPG tanks 43 a Problems with the tank The first danger is cracked, and the product is leaking outside If the concentration reaches the explosion limit (2 - 10%), an incident will occur This problem is dangerous if it is not detected and controlled promptly Cracking problems: when the ambient temperature is low or when the tank's temperature is low due to evaporation, it can make the material brittle very easily Excessive loading of the product due to negligence in operation is also dangerous because the tank does not have space for the liquid to evaporate as the temperature rises b Safety requirements in storage and transport Any activity related to LPG is directly or indirectly related to safety Therefore, everyone in the tank area must understand and follow the general safety requirements: Understand the characteristics of the product Smoking is prohibited in the area When storing products must be taken to leave sufficient volume for the LPG to expand in case of changes in the ambient temperature.The tanks must be blown with nitrogen before filling LPG This must also be done after fixing the equipment Storage tanks and piping must be checked carefully before loading The leakage of LPG vapor to the outside is very dangerous Any time that happening occurs under unavoidable conditions, it must be monitored continuously and restored to normal conditions or repairing leaks c Fire extinguishing LPG gas Recommended using substances such as CO2, dry powder, or BCF (B2C / F2C) Bromocholozodi Fluazometan to extinguish LPG fires, they quickly free LPG concentrations and prevent air from coming into contact with flames Due to the danger of the LPG vapor, it may unexpectedly explode again, not put out immediately unless it is possible to stop the ignition source immediately 44 If the flame comes into direct contact with the LPG tank, the tank's wall can overheat or destroy by high pressure in the tank The power of the fire must be controlled to protect the LPG tank Equipment, property, machinery near the fire, or supplying LPG to the fire must be cooled by sprinklers, spray nozzles, fire pumps, and fire guns LPG tanks are often fitted with safety valves to reduce the tank's pressure when the pressure of the tank exceeds the designed pressure CONCLUSIONS AND RECOMMENDATIONS Nowadays, In our country the gas processing industry is growing strongly The construction of a large-scale and modern storage system is necessary for Vietnam After nearly two months of implementing "Studying the technology of storage transportation for LPG at PV Gas Vung Terminalninal and calculating LPG tank with capacity of 820m 3" with teachers' help, so far i have completed this project The graduation thesis presents the following main contents : - Overview of Vietnam Gas Industry - Introduction of LPG, storage and transportation of LPG - Study the technology of storage transportation for LPG at PV Gas Vung Tau Terninal - Calculating tank with capacity of 820m3 Because the gas processing technology industry is developing strongly, scientific and technical staff training must be focused on mastering advanced and modern technology equipment Build a team of experts operating, maintaining, designing, and managing projects according to international standards Managing, exploiting and effectively using human resources, equipment to reduce maintenance and repair costs, improve production efficiency Beside, we are necessary to consult and learn from experiences of countries with strong gas industry development such 45 as the US, Russia, Canada, Singapore, Thailand, etc about processing product, operation and storage of liquefied petroleum gas REFERENCE [1] Speight, J G (2018) Natural Gas: A Basic Handbook [2] US Geological Survey (2010),Organic Origins of Petroleum" [3] PGS TS Nguyễn Thị Minh Hiền (2003) Chế biến khí tự nhiên khí đồng hành, Nxb Khoa học Kỹ thuâth, Hà Nội pp 113 - 127 [4] ANT Consulting & Lawyers (2019) “Vietnam’s Oil and Gas Industry Continues to Grow”, ANT, Ha Noi [5] https://www.statista.com/statistics/610252/natural-gas-production-in-vietnam [6] https://en.vietnamplus.vn/tags/Su-Tu-Trang-(White-Lion-oil-field).vnp [7] Công ty Gas Petrolimex (2001), Sổ tay khí đốt hóa lỏng, Hà Nội [8] El-Saghir Selim, M Y (2016) Liquefied petroleum gas In Alternative Fuels for Transportation, pp 13-203 [9] Công ty Lọc hóa dầu Bình Sơn (2018) “Tiêu thụ sản phẩm LPG Dung Quất năm 2018”, Năng lượng xanh, Thừa Thiên Huế [10] UK Essays November 2018 Design of Oil Storage Tanks [online] Available from https://www.ukessays.com/essays/engineering/design-of-oil-storage-tanks [11] Batra, R C (2006) “Spherical and Cylindrical Pressure Vessels” In Elements of Continuum Mechanics pp 303-316 46 [12] Cơng ty chế biến khí Vũng Tàu (2016), Sổ tay vận hành kho LPG lạnh Thị Vải, Vũng Tàu pp 11-18-19-25-27 [13] Công ty chế biến khí Vũng Tàu (2009), Sổ tay vận hành cảng PV Gas Vũng Tàu, Vũng Tàu pp 10-13-22 [14] ASME (2019), ASME Boilers and Pressure Vessel Code pp [15] TS Trần Xoa, PGS.TS Nguyễn Trọng Khuông, KS Hồ Lê Viên (2004) Sổ tay q trình thiết bị hóa tập 2, Nxb Khoa học Kỹ thuật, Hà Nội pp 384 47 ... storage tank LPG system a Type of refrigerated LPG tanks Single Containment Tank A single containment tank is composed of an inner cylindrical container.This inner tank is surrounded by an outer tank. .. refrigerated LPG storage 3.1.2.1 Pressurized LPG tank system a Pressurized LPG tank parameter Table 3.4 Parameters of pressurized LPG tank [12] Type Spherical Pressure Tank Capacity 2000 tons Pressure 17.6... exporting product of LPG storage tank A parameter of the LPG storage tank : - Tank working capacity : 422 m3 - Demensions : 4.2m I.D x 34m T/T - Type of tank : Horizontal tank - Design Pressure