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Boiler arrangement - combustion process & supply of fuel oil

Marine boiler fuel oil supply system
: Marine boilers currently burn residual low-grade fuels. This fuel is stored in double-bottom tanks from which it is drawn by a transfer pump up to settling tanks. Here any water in the fuel may settle out and be drained away.



The oil from the settling tank is filtered and pumped to a heater and then through a fine filter. Heating the oil reduces its viscosity and makes it easier to pump and filter. This heating must be carefully controlled otherwise 'cracking' or breakdown of the fuel may take place. A supply of diesel fuel may be available to the burners for initial firing or low-power operation of the boiler.

From the fine filter the oil passes to the burner where it is 'atomised', i.e. broken into tiny droplets, as it enters the furnace. A recirculating line is provided to enable initial heating of the oil.

Boiler fuel oil supply system

Fig:Boiler fuel oil supply system



Related Info:

General arrangement for marine boiler

Water tube boilers

Fire tube boilers

The use of boiler mountings

Combustion process - supply of air

Purity of boiler feedwater

Boiler feed pump operational safety

Boiler feedwater treatment

The steam to steam generator

Combustion process - supply of fuel oil

Safety valves

Boiler water level control -operational safety

Water level gauges

Boiler operation -additional safety

Double evaporation boilers

Exhaust gas heat exchangers

Fuel oil burning process - various design burners

Ordinary spring-loaded Boiler safety valve

Requirement for various boiler types on board cargo ships

Safety precautions for working with marine boiler

Exhaust gas heat exchangers

Boiler arrangement - combustion process - supply of air

How to control combustion in a marine boiler

Pressure jet burner,Rotating cup burner,Steam blast jet burner & Air register for side fired boiler



Marine machineries - Useful tags

Marine diesel engines ||Steam generating plant ||Air conditioning system ||Compressed air ||Marine batteries ||Cargo refrigeration ||Centrifugal pump ||Various coolers ||Emergency power supply ||Exhaust gas heat exchangers ||Feed system ||Feed extraction pump || Flow measurement || Four stroke engines || Fuel injector || Fuel oil system || Fuel oil treatment ||Gearboxes || Governor || Marine incinerator || Lub oil filters || MAN B&W engine || Marine condensers || Oily water separator || Overspeed protection devices || Piston & piston rings || Crankshaft deflection || Marine pumps || Various refrigerants || Sewage treatment plant || Propellers || Power Plants || Starting air system || Steam turbines || Steering gear || Sulzer engine || Turbine gearing || Turbochargers || Two stroke engines || UMS operations || Drydocking & major repairs || Critical machinery || Deck machineries & cargo gears || Control and instrumentation ||Fire protection ||Engine room safety ||






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