Reference no: EM131194255
Question 1:
Propaen (C3H8) with 100 Kmol/hr flow rate is burned in the presence of 70 % excess air.
i. Calculate the actual flow rate of air (70% excess) including O2 and N2 flow rates.
ii. Propaen is completely burned and its conversion is 95 %. Determine the complement molar flow rates of the flue gases.
iii. calculate the molor composition of the product gas on
A) wet basis
b) dry basis
iv. Fill in the table below
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Inlet stream (n, kmol/hr)
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Flue Gas Stream(n, kmol/hr)
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C3H8
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O2
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N2
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CO2
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H2O
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Total
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Question 2:
An equimolor liquid methanol and ethanol mixture at 60o C is fed continuously to a vessel at 15 kmol/hr in which the mixture is heated up to 70oC. The liquid product is 85 mol % ethanol and the vapor product is only 10 mol % ethanol.
i) State the reference temperature, pressure and phase.
ii) Calculate the molar flow rates and components molar flow rates of the outlet liquid and vapor phases.
iii) Determine the amount of heat needed to achieve the output temperature and separation.
Question 3:
Methane (CH4)with 90 mol/min flow rate is burned in the presence of 75 % excess air.
Propaen is completely burned (no CO Is produced and its conversation is 90 %.
a) Write the balanced chemical reaction
b) Calculate the actual floe rate of air including O2 and N2 flow rates.
c) Determine the component molar flow rates of the flue gases.
d) Calculate the molar composition (mole fraction ) of the product gas on a wet basis and dry basis.
Question 4
Use the psychrometric chart to estimate the absolute humidity, wet-bulb temperature, humid volume and dew point of humid air at 45°C and 30% relative humidity. Submit the psychrometric chart and indicate the point on the graph. Do not detach the chart on the next page.
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