Best answer: Which gas is released on complete combustion of coal?

What is the complete combustion of coal?

As per combustion theory the quantity of air required for combustion is that which provides sufficient O2 to completely oxidize combustible elements of fuel. This quantity of air is normally known as STOICHIOMETRIC AIR requirement.

Coal Combustion Theory.

Fuel STOICHIOMETRIC AIR mass / unit mass of fuel
Natural Gas(Methane Base) 17.3

Which is the purest form of coal?

High grade (HG) and ultra high grade (UHG) anthracite are the highest grades of anthracite coal. They are the purest forms of coal, having the highest degree of coalification, the highest carbon count and energy content and the fewest impurities (moisture, ash and volatiles).

What are the 3 types of combustion?

The three important types of combustion are:

  • Rapid combustion.
  • Spontaneous combustion.
  • Explosive combustion.

How much oxygen is needed for complete combustion?

Therefore the quantity of oxygen required for combustion of 1 kg of the fuel is: (2.66C + 8H + S) kg. ∴ Oxygen required from air for the complete combustion of fuel will be (2.66C + 8H + S – O) which can be written as 2.66C + 8 (H – O/8) + S, the term in the bracket being known as the available hydrogen.

Does coal burn a lot of air?

In furnaces, it is calculated that nearly, 200 cubic feet of air pass through the fuel for the combustion of one pound of coal. We see by this what an amount of air is necessary to be admitted into rooms during the winter season for the complete combustion of the fuel in stoves and grates.

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How does coal combustion work?

Coal-fired plants produce electricity by burning coal in a boiler to produce steam. The steam produced, under tremendous pressure, flows into a turbine, which spins a generator to create electricity. The steam is then cooled, condensed back into water and returned to the boiler to start the process over.

What is the formula of coal?

The chemical formula of coal is reported as: C135H96O9NS. Coal is usually taken as 85% carbon based on dry mass.

What is coal combustion used for?

The most common and important use of coal is in combustion, in which heat is generated to produce steam, which in turn powers the turbines that produce electricity. Combustion for electricity generation by utilities is the end use for 86 percent of the coal mined in the United States.

Does coal contain oxygen?

With the invention of the steam engine, coal consumption increased. As of 2016, coal remains an important fuel as it supplied about a quarter of the world’s primary energy and two-fifths of electricity.


Primary carbon
Secondary hydrogen sulfur oxygen nitrogen