Boiler Control Systems Engineering

This book is for anyone who works with boilers as a utilities manager, power plant manager, control systems engineer, maintenance technician or operator. The information deals primarily with water tube boilers with Induced Draft (ID) and Forced Draft (FD) fan(s) or boilers with only a FD fan. However, it can apply to any steam generator requiring the firing of fuel. The book addresses issues to be considered when defining measurement transmitters and specification for transmitters. Final control elements are reviewed as to characteristics and sizing. Engineering details on control systems and the setup of the various control functions are covered with specific examples of boiler control including configuration and tuning. The book also contains some of the primary requirements for a Burner Management System. The book provides in-depth coverage on how to safely and reliably control the firing of a boiler. Regardless of the capacity or fuel, certain fundamental control systems are required for boiler control. Large utility systems are more complex due to the number of burners and the overall capacity and equipment. This book covers engineering details on control systems and provides specific examples of boiler control including configuration and tuning. References to requirements are based on the 2004 NFPA 85 along with other ISA standards. Detailed chapters cover: Boiler fundamentals including piping and instrument diagrams (P&IDs) and a design basis checklist; Control of boilers, from strategies and bumpless transfer to interlock circuitry and final control elements; Furnace draft; Feedwater; Coal-fired boilers; Fuel and air control; Steam temperature; Burner management systems; Environment; and Control valve sizing. 2 apps About autor......Page 2 Table of Contents......Page 3 Figures and tables......Page 5 Boiler Fundamentals......Page 7 Control of Boilers......Page 11 Furnace draft......Page 18 Feedwater......Page 22 Coal fired Boilers......Page 31 Fuel and Air Control......Page 36 Steam Temperature......Page 43 Burner Management System......Page 48 Enviroment......Page 56 Control Valve Sizing......Page 58 Acronyms......Page 61 General Tutorial......Page 62 Steam Temperature Control......Page 67 Bibliography......Page 70 Reference......Page 71 Glosarry of Common Boiler Terms......Page 75