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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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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Calculation of the minimum amount of air required to burn 1 Kg of coal #Stoichiometricair#theoreticalair#APPLIEDTHERMODYNAMICS#MECHANICALENGINEERING#PROBLEM...
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Calculate the amount of minimum air required for. Calculate the amount of minimum air required for complete combustion of 1kg of coal sample. Solution 1 kg of coal contains: C = 800g; H = 50g; O = 10g; N = 20g Combustion reaction Wt of Air required C + O2 CO 12 32 2 H + H2 2 16 800g (32/12) = 2,146g 50g (16/2) = 400g Total = 2,546g Less O ...
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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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Also referred to as energy or calorific value, heat value is a measure of a fuel's energy density, and is expressed in energy (joules) per specified amount ( kilograms). Heat value. Hydrogen (H 2) 120142 MJ/kg. Methane (CH 4) 5055 MJ/kg. Methanol (CH 3 OH) MJ/kg. Dimethyl ether DME (CH 3 OCH 3)
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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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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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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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Volume at NTP of oxygen required to completely burn 1 kg of coal ( carbon) ... Doubtnut helps with homework, doubts and solutions to all the questions. It has helped students get under AIR 100 in NEET IIT JEE. Get PDF and video solutions of IITJEE Mains Advanced previous year papers, NEET previous year papers, NCERT books for classes 6 ...
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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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Final answer: The theoretical dry air needed for the most efficient combustion of 1 kg coal with the given analysis is [INSERT CALCULATED VALUE] moles.. Explanation: In order to determine the theoretical dry air needed for the most efficient combustion of 1 kg of coal, we need to calculate the molar ratios between the reactants and products in the balanced equation for the combustion of coal.
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O2 required to burn C = kg of O2 Same for S and H, O2 required to burn S = kg of O2 O2 required to burn C = kg of O2 Total O2 required= kg of O2 But the O2 is in the feed so, Actual O2 required= = kg O2 Now, in air O2 is 21 % so, Air required= / = kg of air
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A certain coal has the following ultimate analysis on the asfired or asreceived basis: C = 82%, O2 = 1%, M = 5%, H2 = 2%, A = 10%. The coal is burned completely with 20% excess air. (a) Determine the theoretical air supplied per kilogram of coal. (b) Compute the actual air supplied per kilogram of coal.
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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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1 joules Fuel Requirements for a 1000MWe Power Plant =109 watts ... Burning a million tons of coal 1 106 Energy to create Meteor Crater in Arizona 1106 1000MW power station ... (ovendry) = 2400 pounds = 1089 kg o metric tonne (that is, 1000 kg) wood = cubic meters ...
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Cd) Following parameters are noted from ultimate analysis of a coal sample: (i) (ii) Carbon53% Sulpher2% (iii) Hydrogen2(fo (tv) %. Calculate theoretical quantity of air required in kg. for burning 1 kg coal. 6. Answer any four :(0,) 20. Describe the function of Air nozzles in AFBC and CFBC Boiler. (6) Describe
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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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Solution for For complete combustion of 1 kg of a typical coal 12 kg of air is required. Calorific va of coal is 4200 kcal/kg with ash content of 22%. ... Forty kilograms of methane gas per minute is burned with dry air in heating furnace. The volumetric analysis of the products on a dry basis is % carbon dioxide, % carbon monoxide, 11. ...
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Wt. of air required for complete combustion = [Air contains 23%O2 by weight] x 100/23 = kg per 1 kg of coal Air required for 5 kg of coal = x 5 = kg Volume of air kg of air = 22,400 ml volume at NTP of air = 22400 x / = ml of air Answer: Weight of air required= kg Volume of air= ...
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Dry air required to burn 1 kg of carbon completely may be around _____ kg. a) 11 b) 2 c) 20 d) 38. ... Coal tar fuel 200 (CTF 200) is a mixture of. A. Pitch and creosote oil. B. Light oil and pitch. C. Anthracene and crecosote oil. D. Solar oil and pitch. View Answer. View Answer
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Calculate the kg of dry air required per kg of coal to furnish 20% excess air for its combustion. 49) Pure methane is burned with 30% excess air at 25oC, 1 atm. If complete combustion takes place, determine a.) Volume in m3 of dry air supplied 25oC, 1 atm per mol of methane. b.) Volume of wet flue gas at 250oC, 1 atm per mol of methane.
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Solution for For complete combustion of 1 kg of a typical coal 12 kg of air is required. Calorific value of coal is 4200 kCal/kg with ash content of 22%. ... Thirty kilograms of butane gas per minute burns with dry air inside a combustion chamber, giving products having the dry molar analysis of % carbon dioxide, % carbon monoxide, % ...
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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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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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