![[Solved] For complete combustion of 1 kg of Carbon, the required Oxyg](/0wkl54q/135.jpg)
The basic reactions involved are: For carbon and oxygen. C + O 2 → CO 2. 1 mole C requires 1 mole of O 2. The mass of carbon is 12 gm, and oxygen is 16 gm. 1 mole of C = 12 gm. 2 mole of O 2 = 2 × 16 = 32 gm. Hence 32 gm of oxygen required to burn 12 gm of carbon. Mass of oxygen needed to completely burn 1 kg or 1000 gm of carbon:
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Carbon, hydrogen and Sulphur in the fuel combine with oxygen in the air to form carbon dioxide, water vapour and Sulphur dioxide releasing tremendous heat. Basic requirements of combustion:Fuel, Oxygen and 3T's. C + O2 = CO2+ Heat 8084 kcal/kg of Carbon. 2C + O2 = 2CO + Heat 2430 kcal/kg of Carbon.
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The interpretation of the airheat equivalent is that the heat released by any type of coal burning steadily and continuously with 1 kg of air in a confined space (furnace) is approximately equal to a constant value of MJ/kg. For different types of coal, the errors of the airheat equivalent are within ±5%.
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Determine the stoichiometric mass of air required per kilogram of coal for chemically correct combustion. If 60 per cent air is supplied, estimate the percentage analysis by mass of the dry flue gas. Air contains 23 per cent oxygen by mass. [ kg air/kg coal; CO, %, SO, %, (, %, N2 %]...
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(/1 % CO2) 2. A boiler burns coal with the following analysis by mass : 75% C 15% H2 7%S remainder ash Calculate the % Carbon Dioxide present in the dry products if 20% excess air is supplied. (% CO2) 3. Calculate the % of each dry product when coal is burned stoichiometrically in air. The analysis of the coal is:
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The Stoichiometric Ratio is the ratio of oxygen to fuel that is required to complete perfect combustion with no unused fuel or oxygen = 0% XS Air. Methane with 0% excess air as the oxidizer Input Methane CH 4 +2 (O 2 + 2) Æ Mols 1 2 Wt. 16 64 211 Lb/lb fuel 1 4 (Air =) Output
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If an insufficient amount of air is supplied to the burner, unburned fuel, soot, smoke, and carbon monoxide exhausts from the boiler resulting in heat transfer surface fouling, pollution, lower combustion efficiency, flame instability and a potential for explosion.
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Calculate the weight and volume of air required for complete combustion of 1 kg of coal containing C=65%, H=4%, O=7%, N=3%, moisture=15% and remaining is ash. (molecular weight of...
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Example 1 Calculate the minimum volume of air required to burn one Kg of coal having the following composition by weight. C = %, H2 %, N2 =, O2 = %, moisture % ... Example 3 The composition of dry flue gases obtained by burning a liquid fuel containing only hydrogen and carbon is CO2 %, O2 %, N2 %.
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Calculation of the minimum amount of air required to burn 1 Kg of coal #Stoichiometricair#theoreticalair#APPLIEDTHERMODYNAMICS#MECHANICALENGINEERING#PROBLEM...
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The oxygenfuel mass ratio is then: 2 * 32 / 1 * = 64 / So we need kg of oxygen for every 1 kg of fuel. Since masspercent of air is actually oxygen, we need : * 100/ = kg air for every 1 kg of methane. So the stoichiometric airfuel ratio of methane is When the composition of a fuel is known, this ...
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A coal fired steam boiler uses 3000kg of coal per hour. Air required for combustion is kg per coal at a barometric pressure of kPaa. The flue gas has a temperature of 285C and an average molecular weight of 30. Assuming a ash loss of 11% and an allowable gas velocity of /s, find the diameter of the chimney.
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These calculations of moisture balance are in grams divided by 1 m 3 of the gas produced or 1 kg of coal gasified. The following designations are used: W c —moisture content of coal. W f —moisture content of floor rock. W r —moisture content of the roof rock. W i —moisture content of the injected air
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A sample of coal was found to have the following percentage composition C=75 %, H2 = %, O2 = %, N2 = % and the rest ash. Calculate the amount of air needed for the complete combustion if 1 kg of the coal is burnt with 30 % excess air. Propal alcohol (C3H7OH) is burned with 50 percent excess air.
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Solution for Determine the theoretical dry air needed to for the most efficient combustion of 1 kg coal of the following ... 25% ; O2: %CO: 9% ; CO2: %(a) Estimate the minimum volume of air required for complete combustion of m3of the gas.(b) If 60% excess air is supplied, give the volumes of each of the dry constituents ofthe flue ...
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Let us calculate the 02 required for 1kg of coal first Weight of carbon = 81 / 100 * 1 = kg Weight of hydrogen = 5 / 100 * 1 = kg ... Net O2 required = kg . Weight of air required = weight of O2 / 23 *100 = / 23 *100 = kg of air Volume of air:
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Science Chemistry 1. Calculate the weight (number of pounds) of each rank of coal that would have to be burned to produce million BTU (or 3,500,000 BTU) of heat, using the data in the table. Because a range of heating values (or energy output) is given for each coal rank, include a range in your answers. Weight of coal burned to produce 1 ...
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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. coal averages about 62% carbon. The weight of oxygen ...
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The procedure for calculating the stociometric air requirement of a material whose elemental composition such as carbon, hydrogen, nitrogen, oxygen and suphur are known is given below. Carbon. In burning I kg of carbon needs 8/3 kg of oxygen to produce 11/3 kg of CO2. If the oxygen supply is insufficient then the equation may be.
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See Answer. Question: Calculate the amount of air required for the burning of 1 kg of coal, whose analysis is given below, and the amount of gases formed as a result of the combustion in kg. C = kg / kgy N2 = kg / kgy H2 = kg / kgy O2 = kg / kgy S = kg / kgy H2O = kg / kgy Ash = kg / kgy Combustion is ...
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Quick Calculation This post is part of the series: Burning Coal in Power Plants Coal is the most widely used fuel source used to produce electricity. Air is necessary to provide oxygen for burning coal. It is the chemical reaction between carbon in coal and the oxygen in the air that produces heat energy. Elements in Coal
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