Power-plant control and instrumentation : the control of boilers and HRSG systems

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Title:

Personal Author:

Lindsley, David

Publication Information:

U. K. : Institution of Electrical Engineers, 2000

ISBN:

9780852967652

Subject Term:

Steam-boilers

Available:*

Library	Item Barcode	Call Number	Material Type	Item Category 1	Status
Searching... PSZ JB	30000004566703	TJ288 L56 2000	Open Access Book	Book	Searching... Unknown
Searching... PSZ KL	30000010229521	TJ288 L56 2000	Open Access Book	Book	Searching... Unknown
Searching... PSZ KL	30000010229522	TJ288 L56 2000	Open Access Book	Book	Searching... Unknown

This book provides a practical and comprehensive analysis of control systems for boilers and HRSGs (heat-recovery steam generators) in a variety of applications from waste-to-energy plants through to combined-cycle gas-turbine power stations (CCGTs).

It describes process transmitters, advanced DCS configurations and final elements such as control valves and dampers. Basics such as methods of connecting instruments to the process are explained while more advanced discussions of the design features of distributed control systems are also included. At every stage, emphasis is given to the complex, multivariable, interactive nature of steam-raising plant and to the importance of dealing with the problems that result.

Chapters are devoted to the application of modern nomenclature systems and to the documentation required to ensure that the equipment and systems meet all the requirements of performance, accuracy, safety and maintainability.

This book will provide invaluable practical guidance for systems engineers, operators, maintenance staff and specifiers of power plant control and instrumentation (C&I) systems.

Author Notes

David Lindsley is a Fellow of the Institution of Electrical Engineers, a Fellow of the Institute of Marine Engineers and a Senior Member of the Instrument Society of America. He provides consultancy services to the power and process industries

Preface	p. ix
Diagrammatic symbols	p. xiii
Abbreviations and terms used in this book	p. xv
1 The basics of steam generation and use	p. 1
1.1 Why an understanding of steam is needed	p. 1
1.2 Boiling: the change of state from water to steam	p. 2
1.3 The nature of steam	p. 4
1.4 Thermal efficiency	p. 9
1.5 The gas turbine and combined-cycle plants	p. 10
1.6 Summary	p. 12
2 The steam and water circuits	p. 13
2.1 Steam generation and use	p. 13
2.2 The steam turbine	p. 15
2.3 The condensate and feed-water system	p. 17
2.4 The feed pumps and valves	p. 21
2.5 The water and steam circuits of HRSG plant	p. 21
2.6 Summary	p. 23
3 The fuel, air and flue-gas circuits	p. 25
3.1 The furnace	p. 25
3.2 The air and gas circuits	p. 27
3.3 Fuel systems	p. 35
3.4 Igniter systems	p. 44
3.5 Burner-management systems	p. 45
3.6 Gas turbines in combined-cycle applications	p. 46
3.7 Summary	p. 46
4 Setting the demand for the steam generator	p. 49
4.1 Nature of the demand	p. 49
4.2 Setting the demand in power-station applications	p. 50
4.3 The master demand in a power-station application	p. 53
4.4 Load demand in combined heat and power plants	p. 59
4.5 Waste-to-energy plants	p. 60
4.6 Summary	p. 61
5 Combustion and draught control	p. 63
5.1 The principles of combustion control	p. 64
5.2 Working with multiple fuels	p. 79
5.3 The control of coal mills	p. 81
5.4 Draught control	p. 91
5.5 Binary control of the combustion system	p. 95
5.6 Summary	p. 100
6 Feed-water control and instrumentation	p. 103
6.1 The principles of feed-water control	p. 103
6.2 One, two and three-element control	p. 103
6.3 Measuring and displaying the drum level	p. 112
6.4 The mechanisms used for feed-water control	p. 121
6.5 Pumps	p. 127
6.6 De-aerator control	p. 131
6.7 Summary	p. 134
7 Steam-temperature control	p. 135
7.1 Why steam-temperature control is needed	p. 135
7.2 The spray-water attemperator	p. 136
7.3 Temperature control with tilting burners	p. 150
7.4 Controlling the temperature of reheated steam	p. 151
7.5 Gas recycling	p. 152
7.6 Summary	p. 152
8 Control equipment practice	p. 153
8.1 A typical DCS configuration	p. 153
8.2 Interconnections between the systems	p. 157
8.3 Equipment selection and environment	p. 158
8.4 Mechanical factors and ergonomics	p. 159
8.5 Electrical actuators	p. 168
8.6 Hydraulic actuators	p. 168
8.7 Cabling	p. 169
8.8 Electromagnetic compatibility	p. 169
8.9 Reliability of Systems	p. 172
8.10 Summary	p. 180
9 Requirements definition and equipment nomenclature	p. 183
9.1 Overview	p. 183
9.2 Defining the requirements	p. 183
9.3 The KKS equipment identification system	p. 186
9.4 Summary	p. 195
10 Upgrading and refurbishing systems	p. 197
10.1 The reasons behind the changes	p. 198
10.2 Living with change	p. 199
10.3 Making the decision to change	p. 201
10.4 A refurbishment case study	p. 202
10.5 Why refurbish?	p. 204
10.6 Documenting the present system configuration	p. 205
10.7 Summary	p. 205
Further reading	p. 209
Index	p. 213

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Author Notes

Table of Contents