E-Book, Englisch, 200 Seiten
ISBN: 978-1-85617-983-6
Verlag: Elsevier Reference Monographs
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)
Rigorous exposition of all natural gas sweetness processesEquipment and process trouble-shooting techniquesTips for diagnosing and solving equipment and process problemsExercises appear at the conclusion of each chapter
Dr. Maurice Stewart, PE, a Registered Professional Engineer with over 40 years international consulting experience in project management; designing, selecting, specifying, installing, operating, optimizing, retrofitting and troubleshooting oil, water and gas handling, conditioning and processing facilities; designing plant piping and pipeline systems, heat exchangers, pressure vessels, process equipment, and pumping and compression systems; and leading hazards analysis reviews and risk assessments.
Autoren/Hrsg.
Weitere Infos & Material
1;Front Cover;1
2;Gas Sweetening and Processing Field Manual;4
3;Copyright;5
4;Contents;6
5;Part 1: Gas Sweetening;12
5.1;Processing natural gas;12
5.1.1;Introduction;12
5.1.2;Natural Gas Processing;13
5.1.3;Oil and Condensate Removal;15
5.1.4;Water Removal;17
5.1.5;Glycol Dehydration;17
5.1.6;Solid-Desiccant Dehydration;19
5.1.7;Separation of NGLs;19
5.1.8;NGL Extraction;20
5.1.9;Absorption Method;20
5.1.10;Cryogenic Expansion Process;21
5.1.11;NGL Fractionation;22
5.1.12;Sulfur and Carbon Dioxide Removal;23
5.1.13;Gas Sweetening Plant;24
5.2;Acid gas considerations;25
5.2.1;Acid Gases;25
5.2.2;Sour Gas;25
5.2.3;Sweet Gas;25
5.2.4;Gas Sales Contracts Limit Concentration of Acid Compounds;27
5.2.4.1;CO2;27
5.2.4.2;H2S;27
5.2.5;Partial Pressure;27
5.2.6;NACE RP 0186;27
5.3;Sweetening processes;28
5.4;Solid bed processes;29
5.4.1;General Process Description;29
5.4.2;Iron Sponge Process;30
5.4.2.1;Application;30
5.4.2.2;Regeneration;32
5.4.2.3;Hydrate Considerations;34
5.4.3;Sulfa-Treat Process;35
5.4.3.1;Application;35
5.4.4;Molecular Sieve Process;36
5.4.4.1;Regeneration;36
5.4.4.2;Mechanical Degradation;37
5.4.4.3;Application;37
5.4.5;Zinc Oxide Process;37
5.4.5.1;Process;37
5.4.5.2;Bed Considerations;37
5.4.5.3;Application;38
5.5;Chemical solvent processes;38
5.5.1;General Process Description;38
5.5.1.1;Regeneration;38
5.5.1.2;Most Common Chemical Solvents;38
5.5.2;Amine Processes;38
5.5.2.1;Amine Considerations;38
5.5.2.2;Process Description;39
5.5.2.3;Methyldiethanolamine (MDEA);41
5.5.2.4;Monoethanolamine (MEA) Systems;41
5.5.2.4.1;General Discussion;41
5.5.2.4.2;Regeneration;41
5.5.2.4.3;Disadvantages;41
5.5.2.4.4;Reclaimer;42
5.5.2.4.5;Corrosion Considerations;43
5.5.2.4.6;Foam Considerations;43
5.5.2.4.7;Micro-fiber Filter Separator;43
5.5.2.4.8;Blanket Gas System;43
5.5.2.4.9;MEA Losses;44
5.5.2.4.10;Summary;44
5.5.2.5;Diethanolamine (DEA) Systems;44
5.5.2.5.1;General Discussion;44
5.5.2.5.2;Reclaimer;44
5.5.2.5.3;Solution Concentration and Solution Loading;44
5.5.2.5.4;Amine Losses;45
5.5.2.6;Diglycolamine (DGA) Systems;45
5.5.2.6.1;General Discussion;45
5.5.2.6.2;Solution Concentration and Solution Loading;45
5.5.2.6.3;Advantages;45
5.5.2.7;Diisopropanolamine (DIPA) Systems;46
5.5.2.7.1;General Discussion;46
5.5.2.7.2;Advantages;46
5.5.2.8;Methyldiethanolamine (MDEA) Systems;46
5.5.2.8.1;General Discussion;46
5.5.2.8.2;CO2/H2S Ratio;46
5.5.2.8.3;Solution Concentration and Solution Loading;47
5.5.2.8.4;Advantages;47
5.5.2.9;Inhibited Amine Systems;47
5.5.2.9.1;General Discussion;47
5.5.3;Hot Potassium Carbonate Systems;48
5.5.3.1;General Discussion;48
5.5.3.2;Process Description;48
5.5.3.3;Performance;49
5.5.3.4;Dead Spot Considerations;50
5.5.3.5;Corrosion Considerations;50
5.5.4;Proprietary Carbonate Systems;50
5.5.5;Specialty Batch Chemical Solvents;50
5.5.5.1;General Discussion;50
5.5.5.2;Process Description;51
5.5.5.3;Performance;51
5.5.5.4;Sulfa-Check;51
5.5.5.5;Concentration Considerations;51
5.5.5.6;Bubble Flow;52
5.5.5.7;Disposal of Oxidizing Solution;52
5.6;Physical solvent processes;52
5.6.1;General Process Description;52
5.6.2;Fluor Solvent Process;54
5.6.3;Sulfinol Process;55
5.6.3.1;Acid Gas Loadings;56
5.6.3.2;Features of the Sulfinol Process Include;56
5.6.3.3;Design Considerations;56
5.6.3.4;Foam Considerations;56
5.6.3.5;Factors to Consider Before Selecting a Treating Process;56
5.6.4;Selexol Process;57
5.6.5;Rectisol Process;57
5.7;Direct conversion processes;58
5.7.1;General Process Description;58
5.7.2;Stretford Process;58
5.7.2.1;General Discussion;58
5.7.2.2;Process Description;58
5.7.3;IFP Process;60
5.7.3.1;General Discussion;60
5.7.3.2;Process Description;61
5.7.3.3;Ratio of H2S to SO2;61
5.7.4;LO-CAT;61
5.7.4.1;General Discussion;61
5.7.4.2;Process Description;62
5.7.4.3;Operating Considerations;62
5.7.4.4;Sulferox;62
5.7.5;Claus;62
5.7.5.1;General Discussion;62
5.7.5.2;Process Description;64
5.7.6;Tail Gas Treating;66
5.7.6.1;General Discussion;66
5.7.7;Sulfa-Check;66
5.7.7.1;General Discussion;66
5.8;Distillation process;67
5.8.1;Ryan-Holmes Distillation Process;67
5.8.1.1;General Discussion;67
5.8.1.2;Process Description;67
5.8.1.2.1;Three-Column System;67
5.8.1.2.2;Four-Column System;68
5.8.1.2.3;Two-Column System;68
5.9;Gas permeation process;68
5.9.1;Membranes;68
5.9.1.1;Definition;68
5.9.1.2;Applications;68
5.9.1.3;Membrane Permeation;69
5.9.1.4;Asymmetric Membrane Structure;71
5.9.1.5;Composite Membrane Structure;72
5.9.1.6;Membrane Elements;74
5.9.1.6.1;Flat Sheet;74
5.9.1.6.2;Hollow Fiber;75
5.9.1.6.3;Spiral Wound Versus Hollow Fiber;77
5.9.1.6.4;Major Vendors;77
5.9.1.6.5;Membrane Modules;77
5.9.1.7;Membrane Skids;78
5.9.2;Design Considerations;79
5.9.2.1;Process Variables Affecting Design;79
5.9.2.1.1;Flow Rate;79
5.9.2.1.2;Operating Temperature;79
5.9.2.1.3;Feed Pressure;79
5.9.2.1.4;Permeate Pressure;80
5.9.2.1.5;CO2 Removal;82
5.9.2.1.6;Other Design Considerations;83
5.9.2.1.6.1;Process Conditions;83
5.9.2.1.6.2;Environmental Regulations;83
5.9.2.1.6.3;Location;84
5.9.2.1.6.4;Fuel Requirements;84
5.9.2.1.6.5;Design Standards;84
5.9.2.2;Process Flow Schemes;84
5.9.2.2.1;Single-Stage Membrane Process (Figure 1-21);84
5.9.2.2.2;Multistage Membrane Process;84
5.9.2.2.3;Two-Step Membrane Process;85
5.9.2.2.3.1;Two-Stage Membrane Process (Figure 1-22);85
5.9.2.2.3.2;Multistage Membrane Process;85
5.9.3;Membrane Pretreatment;88
5.9.3.1;General Considerations;88
5.9.3.2;Pretreatment System Considerations;88
5.9.3.3;Traditional Pretreatment;89
5.9.3.4;Additions to Traditional Pretreatment;90
5.9.3.4.1;Chiller;90
5.9.3.4.2;Turbo-Expander;90
5.9.3.4.3;Glycol Unit;90
5.9.3.5;Enhanced Pretreatment;91
5.9.3.5.1;Need for Enhanced Pretreatment;91
5.9.4;Advantages of Membrane Systems;94
5.9.4.1;Lower Capital Cost (CAPEX);94
5.9.4.2;Lower Operating Costs (OPEX);94
5.9.4.3;Deferred Capital Investment;94
5.9.4.4;High Turndown;95
5.9.4.5;Operational Simplicity and High Reliability;95
5.9.4.5.1;Single-Stage Membrane Systems;95
5.9.4.5.2;Multistage Membrane Systems;95
5.9.4.6;Good Weight and Space Efficiency;96
5.9.4.7;Adaptability;96
5.9.4.8;Environmental Friendly;97
5.9.4.9;Design Efficiency;97
5.9.4.10;Power Generation;97
5.9.4.11;Ideal for De-bottlenecking;97
5.9.4.12;Ideal for Remote Locations;98
5.10;Process selection;98
5.10.1;Inlet Gas Stream Analysis;98
5.10.2;General Considerations;99
5.10.3;Removal of H2S to Meet Pipeline Qualities (4ppm);99
5.10.3.1;Feeds with Small Acid Gas Loadings;99
5.10.3.2;Feeds with Moderate to High Acid Gas Loadings;99
5.10.3.3;Process Must Be Added Downstream of the Amine System;100
5.10.3.3.1;Normally Accomplished with;100
5.10.3.3.1.1;Amine-Based System;100
5.10.3.3.1.2;Gas Permeation;100
5.10.3.4;General Considerations;100
5.10.3.5;Feeds with Low Concentrations of CO2;100
5.10.3.6;Feeds with Increasing Concentrations of CO2;100
5.10.4;Selection Charts;101
5.10.4.1;Selection Procedure;103
5.11;Design procedure;104
5.11.1;Iron Sponge;104
5.11.1.1;General Considerations;104
5.11.1.2;Design Considerations;105
5.11.2;The Amine System;108
5.11.2.1;General Considerations;108
5.11.2.2;Amine Absorbers;108
5.11.2.3;Amine Circulation Rates;109
5.11.2.4;Heat of Reaction;112
5.11.2.5;Flash Vessel;114
5.11.2.6;Amine Reboiler;114
5.11.2.7;Amine Stripper;115
5.11.2.8;Overhead Condenser and Reflux Accumulator;119
5.11.2.9;Rich/Lean Amine Exchangers;122
5.11.2.10;Amine Cooler;123
5.11.2.11;Amine Solution Purification;124
5.11.2.12;Amine Solution Pumps;124
5.11.2.13;Procedure for Sizing an Amine System;125
5.12;Design examples (oilfield units);126
5.12.1;Example Problem 1: Iron Sponge Unit;126
5.12.2;Example Problem 2: Amine Processing Unit (DEA);129
5.13;Design examples (SI units);139
5.13.1;Example Problem 1: Iron Sponge Unit;139
5.13.2;Example Problem 2: Amine Processing Unit (DEA);142
5.14;Nomenclature;150
6;Part 2: Gas Processing;152
6.1;NGL recovery considerations;152
6.1.1;"Gas Processing" Is Used to Refer to the Removal of;152
6.1.2;Liquids May Be;152
6.1.3;Processing Objectives;152
6.1.4;Producing Transportable Gas;153
6.1.5;Condensation Has Two Drawbacks;153
6.1.6;Two Alternatives Exist;153
6.1.7;Meeting Sales-Gas Specifications;153
6.1.7.1;Most Gas Specifications Contain;153
6.1.7.2;If HC Is More Valuable as a Liquid;153
6.1.7.3;If HC Is More Valuable as a Gas;153
6.1.8;Maximizing Liquid Recovery;153
6.2;Value of NGL components;154
6.2.1;Ethane and Heavier HC Components (C2+) Can Be Liquefied;154
6.2.2;"Crude Spiking";155
6.3;Gas processing terminology;156
6.3.1;Definitions of LPG and NGL;156
6.4;Liquid recovery processes;157
6.4.1;Any Cooling Will Induce Condensation and Yield NGL;157
6.4.2;Absorption/Lean Oil Process;158
6.4.2.1;General Considerations;158
6.4.2.2;In Most Lean Oil Plants;159
6.4.2.3;Liquid Recovery Levels;159
6.4.2.4;Disadvantages;160
6.4.3;Mechanical Refrigeration;160
6.4.4;Joule-Thomson (J-T) Expansions;162
6.4.5;Cryogenic (Expansion Turbine) Plants;162
6.4.5.1;Advantages;164
6.5;Process selection;164
6.5.1;If the NGL Content of the Feed Gas Is Low;165
6.5.2;For Gases Very Rich in NGL;165
6.5.3;If the Inlet Gas Pressure Is Very High;165
6.5.4;Low Inlet Gas Pressure;165
6.5.5;Very Low Gas Rates;165
6.5.6;Large Flow Rates;165
6.5.7;Remote Wells;165
6.6;Fractionation;165
6.7;Design considerations;166
7;Appendix A: Membrane/Amine Hybrid...;168
7.1;Introduction;168
7.2;Process overview;168
7.3;Background;168
7.3.1;General Considerations;168
7.3.2;First Commissioning;169
7.4;TSA design and performance;170
7.4.1;General Design Considerations;170
7.4.2;TSA Process Description;171
7.4.3;Reasons for Four Towers;172
7.4.4;Cycle Times and Breakthrough;172
7.4.5;Heat Recovery Between Cooling and Heating;172
7.5;Air liquide-medal membrane;174
7.5.1;General Considerations;174
7.5.2;Membrane Performance;176
7.6;Permeate/Acid Gas Utilization;177
7.7;Amine System;178
8;Appendix B: Judge Digby Gas Plant Hikes...;180
8.1;Judge digby plant;180
8.2;Debottlenecking;182
8.3;Preparing for the conversion;182
8.4;The turnaround;184
8.5;Plant operations;185
8.6;Betex emissions;186
9;Index;188