What is the process of combustion of coal?
Coal is an organic fuel. … It is known that the principal combustion process of coal involves three basic stages: (1) The release of the volatile matter resulting from the heating of coal, (2) The burning of the released volatile matter and (3) The burning of the remaining char.
What does coal produce during combustion?
coal produce co2 gas during its combustion.. when it is burnt in limited supply of air then it produces charcoal which is a better fuel than coal..
What reactants are needed for combustion in coal fires?
Combustion requires three things to occur: an initial ignition source, such as a match; fuel, such as firewood; and an oxidant, aka oxygen. Combustion results in a number of products: in the case of organic combustion, carbon dioxide, water and energy.
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.
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.
Is released during coal combustion?
Coal combustion is a dirty process, releasing a range of pollutants including sulphur dioxide, nitrogen oxides, carbon dioxide, volatile organic compounds, ash and a range of heavy metals. If these are not controlled they can enter the atmosphere, causing damage to the environment and to human health.
At what temperature does coal ignite?
Ignition temperature of coal and other dust is not affected by particle size. A big difference is made by the way coal dust comes in contact with a heat source. Thus, layered powder of coal can ignite at a much lower temperature (160°C approx.), whereas a cloud of coal dust will need 450–650°C to ignite.
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.
Why coal does not burn by itself?
coal initially doesn’t have that much kinetic energy (between it’s atom ) to burn with oxygen. but if we give a flame to it , it’s kinetic energy increase & react with oxygen to form CO2(combustion). & the heat produce is transferred to other parts of coal & finally all coal burns.