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This comprehensive resource provides the theory that underpins a full understanding of the fundamental techniques of gas chromatography and the process analyzer. Without relying on complex mathematics, the book addresses hands-on applications of gas chromatographs within process industries. The author - a noted expert on the topic - details both the scientific information needed to grasp the material presented and the practical applications for professionals working in the field.
Process Gas Chromatographs: Fundamentals, Design and Implementation comprises 15 chapters, a glossary of terms and a series of self-assessment questions and quizzes. This important resource:
* Describes practical procedures for design and troubleshooting
* Contains concise chapters that provide a structured course for advanced students in process engineering
* Reviews the fundamentals of applied gas chromatography
* Details the operation and maintenance of process gas chromatographs
* Offers a summary, and self-assessment questions, for every chapter
* Is written by an international expert in the field with extensive industry knowledge and teaching experience in courses on process sampling systems and gas chromatography
Written for process analyzer engineers and technicians, application engineers, and industrial environmental engineers, Process Gas Chromatographs: Fundamentals, Design and Implementation offers an essential guide to the basics of gas chromatography and reviews the applications of process gas chromatographs in industry today.
This comprehensive resource provides the theory that underpins a full understanding of the fundamental techniques of gas chromatography and the process analyzer. Without relying on complex mathematics, the book addresses hands-on applications of gas chromatographs within process industries. The author - a noted expert on the topic - details both the scientific information needed to grasp the material presented and the practical applications for professionals working in the field.
Process Gas Chromatographs: Fundamentals, Design and Implementation comprises 15 chapters, a glossary of terms and a series of self-assessment questions and quizzes. This important resource:
* Describes practical procedures for design and troubleshooting
* Contains concise chapters that provide a structured course for advanced students in process engineering
* Reviews the fundamentals of applied gas chromatography
* Details the operation and maintenance of process gas chromatographs
* Offers a summary, and self-assessment questions, for every chapter
* Is written by an international expert in the field with extensive industry knowledge and teaching experience in courses on process sampling systems and gas chromatography
Written for process analyzer engineers and technicians, application engineers, and industrial environmental engineers, Process Gas Chromatographs: Fundamentals, Design and Implementation offers an essential guide to the basics of gas chromatography and reviews the applications of process gas chromatographs in industry today.
Tony Waters owns Analyzer Consulting Engineers, LLC in USA and is an Elected Fellow of International Society of Automation. Since 2000, he has been a Consultant in Process Analysis assisting refiners and chemical processors to achieve optimal use of process analyzers. He has twenty-five years' experience of working in the industry before setting up his own company, Measurementation, Inc. in 1986 to manufacture process analyzer systems.
Preface xix
Contributors xxi
Acknowledgments xxvii
Part One PGC fundamentals 1
1 An introduction 3
Chromatographic separation 3
The gas chromatograph 4
The basic instrument 4
The process instrument 5
The oven 7
Temperature control 7
Temperature programming 7
The sample injection valve 8
Laboratory and online practice 8
Plug injection 8
Gas sample injection 9
Liquid sample injection 9
The column 10
The separating device 10
It takes time 10
Multiple columns 11
SCI-FILE: On Column Types 12
Introduction to SCI-FILEs 12
Two kinds of column 12
Packed columns 12
Open-tubular columns 12
The detector 13
Making the measurements 13
The chromatogram 14
Knowledge Gained 18
Did you get it? 19
Self-assessment quiz: SAQ 01 19
Student evaluation test: SET 01 20
References 21
Cited 21
Figures 22
New technical terms 22
2 Peakshape 25
How columns work 25
What happens inside the column 26
How gas and liquid interact 26
Troubleshooting tips 28
How peaks form 28
Forming an equilibrium 28
The effect of movement 30
A peak appears 31
Effect of more equilibria 33
Some conclusions 34
Identical molecules - different behavior 34
All peaks are symmetrical 35
More equilibria - narrower peaks 35
More equilibria - taller peaks 35
Retention at the apex 36
More equilibria - same retention time 36
SCI-FILE: On Solubility 36
Solubility 36
Partition 36
Distribution 37
Limitations 37
Knowledge Gained 37
Did you get it? 38
Self-assessment quiz: SAQ 02 38
Student evaluation test: SET 02 38
References 40
Figures 40
Equation 41
Symbols 41
New technical terms 41
3 Separation 43
How peaks get separated 43
A more realistic explanation 43
A challenge question 46
Significance of the air peak 47
The answer 48
Measurements from chromatograms 50
A practical task 50
Typical calculations 51
Knowledge Gained 52
Did you get it? 53
Self-assessment quiz: SAQ 03 53
Student evaluation test: SET 03 53
References 55
Figures 55
Equations 55
Symbols 55
New technical terms 55
4 Peakpatterns 57
Migration rate 57
Predictable patterns in peak position 57
Space or time 57
Spatial or temporal separation 58
Predictable patterns in peak width 59
Distance or duration 59
SCI-FILE: On Chemical Names 60
Hydrocarbons 60
Shorthand notation 61
Predictable patterns in retention 61
The doubling rule 61
Challenge question 62
A process of elimination 62
Temperature programming 64
Relative retention 66
Separation and resolution 67
Resolution 67
Predictable patterns in resolution 69
Knowledge Gained 71
Did you get it? 72
Self-assessment quiz: SAQ 04 72
Student evaluation test: SET 04 72
References 74
Figures 74
Equations 74
Symbols 74
New technical terms 74
Part Two PGC analytics 77
5 Industrial gas chromatographs 79
Process analyzers 79
Introduction to process analysis 79
The measurement of quality 80
Process gas chromatographs 81
Versatile and reliable 81
PGC development 82
The value of analysis 83
Competing technologies 84
Gas chromatograph or spectrophotometer? 84
Speed of response 86
The outlook 87
The PGC analytics unit 87
Introduction 87
Carrier gas supply system 88
Sample injection system 89
Chromatographic valves 89
Column system 89
Detectors 89
Temperature-controlled ovens 90
Knowledge Gained 90
Did you get it? 91
Self-assessment quiz: SAQ 05 91
Student evaluation test: SET 05 92
References 93
Cited 93
Table 93
Figures 93
Symbol 94
New technical terms 94
6 Carrier gas system 95
Choice of carrier gas 95
Carrier gas purpose 95
Choice of carrier gas 95
Mixed carrier gases 97
Carrier gas purity 97
Analytical effect of impurities 98
Damaging effect of impurities 100
Maintenance of gas cleaners 101
Carrier gas supply system 101
Carrier gas supply line 102
Pressure regulation 103
Mechanical pressure regulators 103
Electronic pressure controllers 104
Flow regulation 104
Measuring the carrier gas flow rates 104
Setting the flow rates 105
Optimum flow rate 106
Knowledge Gained 106
Did you get it? 107
Self-assessment quiz: SAQ 06 107
Student evaluation test: SET 06 108
References 109
Cited 109
Table 110
Figures 110
Symbols 110
New technical terms 111
7 Sample injection 113
Introduction 113
Injecting gas samples 114
Gas sample volume 114
Gas sample temperature 115
Gas sample pressure 116
Injecting liquid samples 118
Less preferred 118
Vaporizing a liquid sample 118
Liquid sample volume 119
Liquid sample temperature 120
Liquid sample pressure 121
Other techniques 122
Sample splitting 122
Remote sample injection 122
Normalization 122
SCI-FILE: On Analytic Units 123
A fable 123
Constant sample size 123
Different ratio units 124
Injected quantity 124
Conversion of units 125
Knowledge Gained 126
Did you get it? 127
Self-assessment quiz: SAQ 07 127
Student evaluation test: SET 07 128
References 130
Cited 130
Tables 130
Figures 130
Symbols 130
New technical terms 131
8 Chromatographic valves 133
Valve technology 133
Evolution 133
The strange effect of competition 134
Valve types 135
Solenoid instrument valves 135
Spool or piston valves 135
Slide valves 136
Rotary valves 139
Diaphragm valves 141
Plunger valves for liquid injection 143
Other switching techniques 145
Valve leaks 146
About leaks 146
Valve leak mitigation 148
Knowledge Gained 149
Did you get it? 151
Self-assessment quiz: SAQ 08 151
Student evaluation test: SET 08 151
References 153
Cited 153
Table 154
Figures 154
New technical terms 155
9 Column systems 157
Two fundamental issues 157
The general elution problem 157
The temperature ramp solution 158
The multiple column solution 159
The choice 160
Delayed injection 161
Four types of column system 161
Recognizing the functions performed 161
Type A: A single column 162
Type B: Multiple columns, single detector 163
Type C: Multiple detectors, single injector 164
Type D: Multiple sample injectors 166
Elemental column systems 168
Useful techniques 168
Backflush column system 168
Distribution column system 170
Heartcut column system 171
Trap-and-hold column system 173
The real power 174
Endnote 175
Knowledge Gained 176
Did you get it? 177
Self-assessment quiz: SAQ 09 177
Student evaluation test: SET 09 177
References 180
Cited 180
Table 180
Figures 180
New technical terms 181
10 Detectors 183
Introduction 183
Types of detector 183
Two measured variables 183
Concentration detectors 184
Rate-of-arrival detectors 185
Multiple detectors 186
Signal capture 186
SCI-FILE: On Detectors 187
Signal noise 187
Speed of response 187
Sensitivity 188
Thermal conductivity detector 189
TCD application 189
TCD basic function 190
TCD detection principle 191
TCD thermal elements 192
TCD electrical arrangement 194
TCD electrical improvements 194
TCD performance enhancement 195
Flame ionization detector 197
FID application 197
FID detection principle 198
FID makeup gases 199
FID sensitivity 199
FID vent arrangements 200
FID methanator 200
Flame photometric detector 202
FPD application 202
FPD detection principle 202
FPD concerns 203
Other detectors 205
Electron capture detector 205
Helium ionization detector 206
Photoionization detector 207
Pulsed discharge detector 207
Knowledge Gained 210
Did you get it? 213
Self-assessment quiz: SAQ 10 213
Student evaluation test: SET 10 214
References 216
Cited 216
Tables 217
Figures 217
Equations 217
Symbols 218
New technical terms 218
11 Temperature control 221
Need for stability 221
Sample volume 221
Retention times 221
The air-bath oven 223
Heating with air purging 223
The airless oven 225
Heating without air 225
The 2008 ABB PGC1000 227
The 2014 Rosemount Danalyzer 370XA PGC 227
The 2009 Rosemount 700XA PGC 227
The 2002 Maxum Edition II 228
Direct column heating 228
Resistive heating 228
The ABB approach 229
The Teledyne Falcon approach 230
A few cautions 231
...| Erscheinungsjahr: | 2020 |
|---|---|
| Fachbereich: | Chemische Technik |
| Genre: | Importe, Technik |
| Rubrik: | Naturwissenschaften & Technik |
| Medium: | Buch |
| Inhalt: | 400 S. |
| ISBN-13: | 9781119633044 |
| ISBN-10: | 1119633044 |
| Sprache: | Englisch |
| Einband: | Gebunden |
| Autor: | Waters, Tony |
| Hersteller: | Wiley |
| Maße: | 260 x 208 x 26 mm |
| Von/Mit: | Tony Waters |
| Erscheinungsdatum: | 13.07.2020 |
| Gewicht: | 1,079 kg |
Tony Waters owns Analyzer Consulting Engineers, LLC in USA and is an Elected Fellow of International Society of Automation. Since 2000, he has been a Consultant in Process Analysis assisting refiners and chemical processors to achieve optimal use of process analyzers. He has twenty-five years' experience of working in the industry before setting up his own company, Measurementation, Inc. in 1986 to manufacture process analyzer systems.
Preface xix
Contributors xxi
Acknowledgments xxvii
Part One PGC fundamentals 1
1 An introduction 3
Chromatographic separation 3
The gas chromatograph 4
The basic instrument 4
The process instrument 5
The oven 7
Temperature control 7
Temperature programming 7
The sample injection valve 8
Laboratory and online practice 8
Plug injection 8
Gas sample injection 9
Liquid sample injection 9
The column 10
The separating device 10
It takes time 10
Multiple columns 11
SCI-FILE: On Column Types 12
Introduction to SCI-FILEs 12
Two kinds of column 12
Packed columns 12
Open-tubular columns 12
The detector 13
Making the measurements 13
The chromatogram 14
Knowledge Gained 18
Did you get it? 19
Self-assessment quiz: SAQ 01 19
Student evaluation test: SET 01 20
References 21
Cited 21
Figures 22
New technical terms 22
2 Peakshape 25
How columns work 25
What happens inside the column 26
How gas and liquid interact 26
Troubleshooting tips 28
How peaks form 28
Forming an equilibrium 28
The effect of movement 30
A peak appears 31
Effect of more equilibria 33
Some conclusions 34
Identical molecules - different behavior 34
All peaks are symmetrical 35
More equilibria - narrower peaks 35
More equilibria - taller peaks 35
Retention at the apex 36
More equilibria - same retention time 36
SCI-FILE: On Solubility 36
Solubility 36
Partition 36
Distribution 37
Limitations 37
Knowledge Gained 37
Did you get it? 38
Self-assessment quiz: SAQ 02 38
Student evaluation test: SET 02 38
References 40
Figures 40
Equation 41
Symbols 41
New technical terms 41
3 Separation 43
How peaks get separated 43
A more realistic explanation 43
A challenge question 46
Significance of the air peak 47
The answer 48
Measurements from chromatograms 50
A practical task 50
Typical calculations 51
Knowledge Gained 52
Did you get it? 53
Self-assessment quiz: SAQ 03 53
Student evaluation test: SET 03 53
References 55
Figures 55
Equations 55
Symbols 55
New technical terms 55
4 Peakpatterns 57
Migration rate 57
Predictable patterns in peak position 57
Space or time 57
Spatial or temporal separation 58
Predictable patterns in peak width 59
Distance or duration 59
SCI-FILE: On Chemical Names 60
Hydrocarbons 60
Shorthand notation 61
Predictable patterns in retention 61
The doubling rule 61
Challenge question 62
A process of elimination 62
Temperature programming 64
Relative retention 66
Separation and resolution 67
Resolution 67
Predictable patterns in resolution 69
Knowledge Gained 71
Did you get it? 72
Self-assessment quiz: SAQ 04 72
Student evaluation test: SET 04 72
References 74
Figures 74
Equations 74
Symbols 74
New technical terms 74
Part Two PGC analytics 77
5 Industrial gas chromatographs 79
Process analyzers 79
Introduction to process analysis 79
The measurement of quality 80
Process gas chromatographs 81
Versatile and reliable 81
PGC development 82
The value of analysis 83
Competing technologies 84
Gas chromatograph or spectrophotometer? 84
Speed of response 86
The outlook 87
The PGC analytics unit 87
Introduction 87
Carrier gas supply system 88
Sample injection system 89
Chromatographic valves 89
Column system 89
Detectors 89
Temperature-controlled ovens 90
Knowledge Gained 90
Did you get it? 91
Self-assessment quiz: SAQ 05 91
Student evaluation test: SET 05 92
References 93
Cited 93
Table 93
Figures 93
Symbol 94
New technical terms 94
6 Carrier gas system 95
Choice of carrier gas 95
Carrier gas purpose 95
Choice of carrier gas 95
Mixed carrier gases 97
Carrier gas purity 97
Analytical effect of impurities 98
Damaging effect of impurities 100
Maintenance of gas cleaners 101
Carrier gas supply system 101
Carrier gas supply line 102
Pressure regulation 103
Mechanical pressure regulators 103
Electronic pressure controllers 104
Flow regulation 104
Measuring the carrier gas flow rates 104
Setting the flow rates 105
Optimum flow rate 106
Knowledge Gained 106
Did you get it? 107
Self-assessment quiz: SAQ 06 107
Student evaluation test: SET 06 108
References 109
Cited 109
Table 110
Figures 110
Symbols 110
New technical terms 111
7 Sample injection 113
Introduction 113
Injecting gas samples 114
Gas sample volume 114
Gas sample temperature 115
Gas sample pressure 116
Injecting liquid samples 118
Less preferred 118
Vaporizing a liquid sample 118
Liquid sample volume 119
Liquid sample temperature 120
Liquid sample pressure 121
Other techniques 122
Sample splitting 122
Remote sample injection 122
Normalization 122
SCI-FILE: On Analytic Units 123
A fable 123
Constant sample size 123
Different ratio units 124
Injected quantity 124
Conversion of units 125
Knowledge Gained 126
Did you get it? 127
Self-assessment quiz: SAQ 07 127
Student evaluation test: SET 07 128
References 130
Cited 130
Tables 130
Figures 130
Symbols 130
New technical terms 131
8 Chromatographic valves 133
Valve technology 133
Evolution 133
The strange effect of competition 134
Valve types 135
Solenoid instrument valves 135
Spool or piston valves 135
Slide valves 136
Rotary valves 139
Diaphragm valves 141
Plunger valves for liquid injection 143
Other switching techniques 145
Valve leaks 146
About leaks 146
Valve leak mitigation 148
Knowledge Gained 149
Did you get it? 151
Self-assessment quiz: SAQ 08 151
Student evaluation test: SET 08 151
References 153
Cited 153
Table 154
Figures 154
New technical terms 155
9 Column systems 157
Two fundamental issues 157
The general elution problem 157
The temperature ramp solution 158
The multiple column solution 159
The choice 160
Delayed injection 161
Four types of column system 161
Recognizing the functions performed 161
Type A: A single column 162
Type B: Multiple columns, single detector 163
Type C: Multiple detectors, single injector 164
Type D: Multiple sample injectors 166
Elemental column systems 168
Useful techniques 168
Backflush column system 168
Distribution column system 170
Heartcut column system 171
Trap-and-hold column system 173
The real power 174
Endnote 175
Knowledge Gained 176
Did you get it? 177
Self-assessment quiz: SAQ 09 177
Student evaluation test: SET 09 177
References 180
Cited 180
Table 180
Figures 180
New technical terms 181
10 Detectors 183
Introduction 183
Types of detector 183
Two measured variables 183
Concentration detectors 184
Rate-of-arrival detectors 185
Multiple detectors 186
Signal capture 186
SCI-FILE: On Detectors 187
Signal noise 187
Speed of response 187
Sensitivity 188
Thermal conductivity detector 189
TCD application 189
TCD basic function 190
TCD detection principle 191
TCD thermal elements 192
TCD electrical arrangement 194
TCD electrical improvements 194
TCD performance enhancement 195
Flame ionization detector 197
FID application 197
FID detection principle 198
FID makeup gases 199
FID sensitivity 199
FID vent arrangements 200
FID methanator 200
Flame photometric detector 202
FPD application 202
FPD detection principle 202
FPD concerns 203
Other detectors 205
Electron capture detector 205
Helium ionization detector 206
Photoionization detector 207
Pulsed discharge detector 207
Knowledge Gained 210
Did you get it? 213
Self-assessment quiz: SAQ 10 213
Student evaluation test: SET 10 214
References 216
Cited 216
Tables 217
Figures 217
Equations 217
Symbols 218
New technical terms 218
11 Temperature control 221
Need for stability 221
Sample volume 221
Retention times 221
The air-bath oven 223
Heating with air purging 223
The airless oven 225
Heating without air 225
The 2008 ABB PGC1000 227
The 2014 Rosemount Danalyzer 370XA PGC 227
The 2009 Rosemount 700XA PGC 227
The 2002 Maxum Edition II 228
Direct column heating 228
Resistive heating 228
The ABB approach 229
The Teledyne Falcon approach 230
A few cautions 231
...| Erscheinungsjahr: | 2020 |
|---|---|
| Fachbereich: | Chemische Technik |
| Genre: | Importe, Technik |
| Rubrik: | Naturwissenschaften & Technik |
| Medium: | Buch |
| Inhalt: | 400 S. |
| ISBN-13: | 9781119633044 |
| ISBN-10: | 1119633044 |
| Sprache: | Englisch |
| Einband: | Gebunden |
| Autor: | Waters, Tony |
| Hersteller: | Wiley |
| Maße: | 260 x 208 x 26 mm |
| Von/Mit: | Tony Waters |
| Erscheinungsdatum: | 13.07.2020 |
| Gewicht: | 1,079 kg |
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