20101103hw5

20101103hw5 - !"#$%&#() +,...

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Unformatted text preview: !"#$%&#() +, -./#,+&"#. 0 1."(. 2.&3.&. 4%5.&(6%"( +, -7%6#8./ 9":#"%%&#": -79;<= >"(&+?@8(#+" (+ -7%6#8./ 9":#"%%&#": A+6%B+&C DE= ?@% F%?"%?.) G+$H ;IJ K<;< "1$ The natural gas going to your stove has the following molar composition9 88; methane, =; ethane, 2; propane, 2; iso-butane "A = H 10 $, 3; nitrogen, 1; AO 2 . ssume that the gas is burned with 10; excess air under the following conditions9 "a$ 5; methane conversion, 0; ethane conversion "b$ the propane mole fraction in the outlet is 0.001 "c$ the AO 2 to AO selectivity is = "d$ .// the iso-butane is (+(.//) burned Answer the following questions: (i) Draw a flow-sheet (ii) What reactions should be considered? (iii) Find the inlet air flowrate if 100 mol/min of gas enters the stove (iv) Find the outlet gas composition by setting up a matrix equation and solve it with Mathematica. (2) Dry nitrogen is pumped into a glovebox to protect an experiment that is hyper-sensitive to oxygen. The box is maintained at a slight positive pressure (3 in-H 2 O) above atmospheric to prevent oxygen from back-diffusing into the box via the vent line. The gas contents of the box prevent oxygen from back-diffusing into the box via the vent line....
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20101103hw5 - !"#$%&#() +,...

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