DEWA

Projects & Engineering (Generation)

Instrumentation &Control

Auxiliary Boiler

Presented By

Mohamed J. Albahar

15912

Introduction

• Auxiliary Boiler

– 2 Drums

– Natural Circulation

– Gas Firing

Water & Steam System

• Deaerator

• Feed water tank

• Feed water Pumps

• Economizer

• Flow Control Valve

• Boiler Drum (Lower and Upper)

• Evaporator

• Main Systems

• Feed water system

• Water and Steam System

• Firing System

• Drains and Vents System

• Air and Flue Gas System

• Service and Instrument Air System

Firing System• Fuel Gas to Burners

• Fuel Gas to Igniters

• Cooling Air

• Burners

• Scanners

Forced Draft Fan

Cooling Fans Burner

Heat Exchanger

Miscellaneous

• Drains and vents

• Blowdown System

• Sampling system

• Nitrogen system

• Chemical dosing system

• Instrument air service

Trip

• The Boiler’s protection (Level, Temp, Pressure)

• Feed pump trip

• Cooling Fan Trip

Conclusion

The Outcome

Main and auxiliary systems

Instrumentation and components

Reading and Analysing P & I Diagrams

Thanks for your attention

Any Questions