Fuels and Combustion Questions

• Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the
• Size of blast furnace grade coke is __________ mm.
• Bituminous coal
• Prime coking coal is always blended with medium or non- coking coal before ear-bonisation
• Which of the following constituents of coal is the most important in the production of coke?
• Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec.
• Carbon Content by weight in air dried wood may be about __________ percent.
• Coke oven gas consists mainly of
• During combustion of gaseous fuels, deficiency of air
• Ratio of primary air to secondary air increases with increase in the rank of coal, because the