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.
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Control of Boilers
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air flow air preheater attemperator automatic Block boiler control burner boiler burner management system cascade control changes combustion air combustion control control loop control strategy control system control valve damper demand signal device diagram draft boilers draft control draft fan drum pressure equipment excess air feedback control feeder feedforward signal feedwater control feedwater flow Figure final steam temperature fired boilers firing rate demand Fisher Controls flow control flow measurement flue gas Fossil Fuel fuel air ratio fuel demand fuel flow fuel trip relay furnace draft furnace pressure heat ID fan Igniter fuel increase induced draft input interlock jackshaft load manipulated variable master fuel trip method NFPA 85 Code operation oxygen percent PID control pressure transmitter primary process variable pulverized coal reset set point Single element control spray water steam flow steam temperature control superheater tubes tuning turbine Typical Yes Yes PSL Yes Yes Yes