Question

Solid lump fuels for steam boilers are handled by _______.
1. burners 
2. injectors 
3. stokers 
4. unit boxes

Answer 1

Correct Answer - Option 3 : stokers 

Combustion Equipment for Steam Boilers:

• The combustion equipment is a component of the steam generator.
• Since the source of heat is the combustion of a fuel, a working unit must have, whatever, equipment is necessary to receive the fuel and air, proportioned to each other and to the boiler steam demand, mix, ignite, and perform and other special combustion duties, such as distillation of volatile from coal prior to ignition.

1. Fluid fuels are handled by burners; Solid lump fuels by stokers.
2. In boiler plants hand firing on grates is practically unheard of nowadays in new plants, although there are many small industrial plants still in service with hand firing.
3. The fuels are mainly bituminous coal, fuel oil and natural gas mentioned in order of importance. All are composed of hydrocarbons, and coal has, as well, much fixed carbon and little sulphur.