Final exam 2003

Final exam 2003 - CHE-442 Final Exam Name: S.S.: 1A gas...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CHE-442 Final Exam Name: S.S.: 1A gas mixture containing 4% of component A (the rest of it an inert) is fed at a rate of 1 × 10 -5 m 3 /s through a 2-in ID tube, packed with porous catalyst solids at a constant temperature of 1200 K and a constant pressure of 101.3 kPa. The reaction (A B) occurring inside the porous pallets is first order -r A = K C A The reactor contains 6.4 Kg of catalyst and the inlet mole fraction of A is 4%. Calculate the mole fraction of A at the exit of the reactor. Additional information : K = 2.025 × 10 -7 m 3 / g-s ν = kinematic viscosity = 1.76 × 10 -8 m 2 / s D AB = gas phase diffusivity = 3 × 10 -8 m 2 / s ε = 0.3 τ = tortuosity =1.2 ρ C = density of catalyst particle = 2.6 g / cm 3 Φ = bed porosity = 0.4 ρ A = bulk density of bed =ρ C (1-Φ) R = pellet radius = 5 × 10 -3 m γ = 1.0
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Name: 2. Curves A, B and C show the variation in reaction rate as a function of the temperature for three different reactions catalyzed by solid catalyst pellets. What can you say about which mechanism limits the reaction rate for the three different cases?
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 8

Final exam 2003 - CHE-442 Final Exam Name: S.S.: 1A gas...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online