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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.
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The heat of combustion of heptane is 4817 kj per mol How much heat would be released if 250 kg of heptane undergoes complete combustion?
12018750 kJ
What are the three requirements of combustion?
When coal is burned in the boiler of a power plant, it is not just set alight like the coal in a domestic fireplace. It has to burn fast¾ for power is the energy converted per second, and it has to burn completely¾for efficiency is a measure of how much energy is usefully harnessed rather than lost. The efficient combustion of coal needs the "three T's"¾temperature high enough to ignite the fuel, turbulence vigorous enough for the fuel constituents to be exposed to the oxygen of the air, and time long enough to assure complete combustion. The three requirements are best met by pulverized coal, which is forced into the furnace by an air stream under high pressure and is ignited as it enters through a nozzle. Pulverized coal was introduced in the early 1920's and represented a major advance over the previous stoker firing.
How much water required to generate 1000kwh of electricity from coal?
it takes 800 gallons of water to make 1 megawatt-hour of electricity (1000 kWh).
If hexane was burned in a limited supply of oxygen the combustion would not be complete?
This depends on how much hexane was being burned and how much oxygen was present.Because the complete combustion of carbon involves placing two moles of oxygen on one mole of carbon plus the formation of water, you would need 19 moles of diatomic oxygen for every one mole of hexane.1 C6H14 + 19 O2 --> 6 CO2 + 7 H2O
Is coal a black diamond?
No. coal is coal and diamond is diamond. They are both formed from carbon, but diamond is much harder than coal.
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 coal is required for 1 mw power plant?
3.5 tonns of coal is required for producing 1 mw
How much coal is required to generate 1 MW electricity?
an all nighter
The heat of combustion of heptane is 4817 kj per mol How much heat would be released if 250 kg of heptane undergoes complete combustion?
12018750 kJ
How much oxygen takes to burn propane?
C3H8 + 5O2 -> 3CO2 + 4H2O That is the complete combustion for Propane.
How are the incomplete and complete combustion reactions different?
In complete combustion, all the reactants will be converted into carbon dioxide and water. In incomplete combustion, some of the reactants will be converted to carbon dioxide, some will become carbon monoxide, and some may not react at all. Quite often incomplete combustion will result in a "sooty" flame.
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.
How much carbon monoxide per year for a car?
Almost none. The combustion in a car engine is nearly complete.
What are the three requirements of combustion?
When coal is burned in the boiler of a power plant, it is not just set alight like the coal in a domestic fireplace. It has to burn fast¾ for power is the energy converted per second, and it has to burn completely¾for efficiency is a measure of how much energy is usefully harnessed rather than lost. The efficient combustion of coal needs the "three T's"¾temperature high enough to ignite the fuel, turbulence vigorous enough for the fuel constituents to be exposed to the oxygen of the air, and time long enough to assure complete combustion. The three requirements are best met by pulverized coal, which is forced into the furnace by an air stream under high pressure and is ignited as it enters through a nozzle. Pulverized coal was introduced in the early 1920's and represented a major advance over the previous stoker firing.
How much time is required to complete high school?
4 years.
How much coal did the titanic burn?
The Titanic had 159 coal-burning furnaces fueling the boilers.
How much coal is required to generate 1 ton of steam?
As a rule of thumb you would need about 138 Kg of coal (26GJ/Ton) to produce 1 ton of steam.
