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The exact amount of air required depends on the amount of carbon and other combustible materials in the specific type of coal in question. U.S. coal averages about 62% carbon. The weight of oxygen required to combust coal is the same as the weight ratio of oxygen to carbon in CO2, which is 66:44. It takes two atoms of oxygen to combust one atom of carbon, but the carbon weighs more than each atom of oxygen.
To make this more intuitive, the weight of air sufficent to hold enough oxygen to burn carbon is about 7.1:1. Only 20.9% of that air is oxygen. Few people have an intuitive sense of the weight of air, so it may be more helpful to think in terms of volume. The ratio of the volume of air to the volume of coal is about 71:1.
Depending on what you are interested in understanding, it may or may not be important to determine the carbon content of a specific type of coal, or the presence or absence of other hydrocarbons in the coal. All of the values necessary to make the comparisons given here are readily available on the internet. It may be necessary to convert from metric to English values or the other way around.
What else can I help you with?
How much oxygen is needed to sustain combustion?
Oxygen is required to sustain combustion as it is the oxidizer that allows for the chemical reaction with the fuel. The exact amount of oxygen needed depends on the type of fuel being burned, as different fuels have different oxygen requirements for combustion. In general, combustion requires a sufficient supply of oxygen to ensure complete oxidation of the fuel.
How much CO2 will be produced by combustion of 2231 kg of coal?
The amount of carbon dioxide (CO2) produced from burning coal varies depending on the type of coal and the combustion efficiency. On average, burning one ton (1000 kg) of coal produces around 2.86 tons of CO2. Therefore, for 2231 kg of coal, the approximate CO2 emissions would be around 6.38 tons.
Why is coal broken and grounded into powder before it is blown into the boiler blast furnice?
The fine coal dust is much more combustible than large lumps of coal. Large lumps of coal takes time for the flames to begin burning it efficiently - so heat takes longer to build up in the furnace.
How much water released when burn one ton of coal?
Burning one ton of coal typically releases about 2.15-2.3 times its weight in carbon dioxide, but this does not directly relate to water release. However, during the combustion process, coal also releases water vapor as a byproduct, but the exact amount can vary based on the type of coal and combustion conditions.
Is it better to have too much gas or too much oxygen for combustion?
It is better to have too much oxygen for combustion. Having excess oxygen ensures complete combustion, which results in a cleaner and more efficient burning process. Too much gas can lead to incomplete combustion, releasing harmful byproducts like carbon monoxide.
How much coal is required for 1 mw power plant?
3.5 tonns of coal is required for producing 1 mw
How much coal dust can be fed to the fluidized bed combustion furnace through 4 Inch size and 6 Inch size Under Bed Coal feeding nozzle?
Assuming the measurements are correct then I would guesstimate that that would be the exact size required.
How much oxygen is needed to sustain combustion?
Oxygen is required to sustain combustion as it is the oxidizer that allows for the chemical reaction with the fuel. The exact amount of oxygen needed depends on the type of fuel being burned, as different fuels have different oxygen requirements for combustion. In general, combustion requires a sufficient supply of oxygen to ensure complete oxidation of the fuel.
How much CO2 will be produced by combustion of 2231 kg of coal?
The amount of carbon dioxide (CO2) produced from burning coal varies depending on the type of coal and the combustion efficiency. On average, burning one ton (1000 kg) of coal produces around 2.86 tons of CO2. Therefore, for 2231 kg of coal, the approximate CO2 emissions would be around 6.38 tons.
Why is coal broken and grounded into powder before it is blown into the boiler blast furnice?
The fine coal dust is much more combustible than large lumps of coal. Large lumps of coal takes time for the flames to begin burning it efficiently - so heat takes longer to build up in the furnace.
How much coal is required to generate 1 MW electricity?
an all nighter
How much water released when burn one ton of coal?
Burning one ton of coal typically releases about 2.15-2.3 times its weight in carbon dioxide, but this does not directly relate to water release. However, during the combustion process, coal also releases water vapor as a byproduct, but the exact amount can vary based on the type of coal and combustion conditions.
Why execess air is required in combustion of fuel?
Excess air in combustion helps ensure complete burning of fuel by providing enough oxygen for the reaction. This assists in maximizing energy output and reducing the formation of harmful emissions such as carbon monoxide. However, too much excess air can also lead to energy loss and inefficient combustion.
Is it better to have too much gas or too much oxygen for combustion?
It is better to have too much oxygen for combustion. Having excess oxygen ensures complete combustion, which results in a cleaner and more efficient burning process. Too much gas can lead to incomplete combustion, releasing harmful byproducts like carbon monoxide.
How much coal to make 1 ton of fly-ash?
The amount of coal needed to produce 1 ton of fly ash varies depending on the characteristics of the coal and the combustion process. On average, it takes about 10-20% of the original coal weight to result in 1 ton of fly ash.
Why is coal crushed and ground into a fine powder before it is blown into the boiler furnaces?
Coal is crushed and ground into a fine powder before being blown into boiler furnaces primarily to improve combustion efficiency. Here's why: Increased Surface Area: When coal is ground into a fine powder, its surface area increases dramatically. This allows it to burn much more quickly and completely when mixed with air. Faster Combustion: Fine coal particles ignite faster than larger chunks. This ensures that the coal burns rapidly and releases heat more efficiently, which is essential for power generation. Better Temperature Control: Pulverized coal allows for better regulation of furnace temperatures, improving the overall stability and efficiency of the boiler. Reduced Unburnt Residue: Finely ground coal ensures more complete combustion, which reduces the amount of unburnt carbon in the ash and lowers waste. Improved Heat Transfer: Complete and efficient burning of pulverized coal produces a consistent and intense flame, which enhances the heat transfer to the boiler tubes, producing steam more effectively. In short, pulverizing coal makes the combustion process more efficient, cleaner, and better suited for large-scale power generation. 4o
How much coal dust can be fed to the fluidized bed combustion furnace through 4 Inch size and 6 Inch size coal feeding nozzle?
I would say it would be the exact size indicated on the box.
