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BOILER

BOILER. By Farhan Ahmad Department of Chemical Engineering, University of Engineering & Technology Lahore . What is a Boiler. A boiler is a closed vessel in which water or other fluid is heated under pressure. uses water to transfer combustion heat into working energy

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BOILER

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  1. BOILER By Farhan Ahmad Department of Chemical Engineering, University of Engineering & Technology Lahore engineering-resource.com

  2. What is a Boiler • A boiler is a closed vessel in which water or other fluid is heated under pressure. • uses water to transfer combustion heat into working energy • Heat generated by Combustion of Fuel is transferred to water to become steam Why There is a Need of a Boiler • Power Generation • Heating Requirements • Control of Process engineering-resource.com

  3. various heating surfaces in a boiler Heating surface is expressed in square feet or in square meter Classified into : • Radiant Heating Surfaces — (direct or primary) surfaces that are directly exposed to the radiant heat of the combustion flame. • ConvectedHeating Surfaces — ( indirect or secondary) exposed only to hot combustion gases. 3 Extended Heating Surfaces— referring to the surface of economizers and super heaters used in certain types of water tube boilers. engineering-resource.com

  4. CLASSIFICATION OF BOILER By Heating media Arrangement By Use By Steam Water Circulation By Pressure By Fuel or heat source engineering-resource.com

  5. By Heating media Arrangement Fire Tube Boiler Water Tube Boiler By Use Utility Boiler Industrial Boiler Marine Boiler engineering-resource.com

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  9. By Steam Water Circulation Natural Circulation Boiler Forced Multiple Circulation Boiler Once Through Boiler By Pressure Low and Middle Pressure Boiler High Pressure Boiler SuperHigh Pressure Boiler engineering-resource.com

  10. By Fuel or heat source Solid Fuel Fired Boiler Fuel Oil Fired Boiler Gas Fired Boiler Waste Heat Boiler engineering-resource.com

  11. Boiler Systems • Water treatment system • Feed water system • Steam System • Blow down system • Fuel supply system • Air Supply system • Flue gas system engineering-resource.com

  12. Accessories Boiler fittings • Safety valve: used to relieve pressure and prevent possible explosion of a boiler. • Water column: to show the operator the level of fluid in the boiler, a water gauge or water column is provided. • Bottom blowdown valves • Surface blowdown line • Circulating pump • Check valve : a nonreturn stop valve by which water enters the boiler engineering-resource.com

  13. Steam accessories • Main steam stop valve • Steam traps • Main steam stop/Check valve used on multiple boiler installations • Combustion accessories • Fuel oil system • Gas system • Coal system • Automatic combustion systems engineering-resource.com

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