Where are pulverized fuel Firers used Mcq?
8. Where are pulverized fuel firers used? Explanation: Pulverized fuel firers are used in large capacity plants.
Which of the following is used in Pulverised coal firing?
Explanation: Coal having high volatile matter is used for making pulverised coal. As soon as it is fired, the volatile matter starts burning which helps in increasing the rate of combustion.
What is pulverized coal Mcq?
What is pulverised coal? … Coal which burns for long time. ANSWER: c. Coal broken into fine particles.
What is the main reason for thermal pollution Mcq?
Explanation: Power plants are the main reasons behind growing thermal pollution. Because power plants use water as a cooling agent for cooling down their machines. This used water is in high temperature and it is released back to the water bodies and cause thermal pollution.
Which fuel firing system is more efficient?
Pulverized fuel firing is most modern and efficient method of boiler firing. Due to pulverization, the surface area of coal becomes much larger, and in this method air required for combustion is much less. As the quantity of required air and fuel both are less, loss of heat in this method of boiler firing is much less.
Why Pulverised coal is used in a power plant?
Mechanically pulverizing coal into a fine powder enables it to be burned like a gas, thus allowing more efficient combustion. Transported by an air or an air/gas mixture, pulverized coal can be introduced directly into the boiler for combustion.
What is the mechanism of pulverized fuel firing system?
The basic idea of a firing system using pulverised fuel is to use the whole volume of the furnace for the combustion of solid fuels. Coal is ground to the size of a fine grain, mixed with air and burned in the flue gas flow. Biomass and other materials can also be added to the mixture.
What is Pulverisation?
Definitions of pulverisation. the act of grinding to a powder or dust. synonyms: grind, mill, pulverization. type of: compaction, crunch, crush. the act of crushing.
How is coal pulverized in the ball mill?
How is coal pulverized in the ball mill? Explanation: The pulverization in ball mill takes place as a result of action between the balls and coal, as the cylinder they are put in is made to rotate. The cylinder is partly filled with various sized steel balls.