A first-order, gas-phase reaction, A 1/2 B is performed in a PBR. Feed rate is 4...

Transcribed Image Text:

A first-order, gas-phase reaction, A→ 1/2 B is performed in a PBR. Feed rate is 4 mol/s containing 10% A and the rest inerts. The PBR is packed with 10 mm diameter spherical porous particles. The intrinsic reaction rate is given as: rA' = 2 CA mol/kg(cat)-s. Bulk density of the catalyst is 2.5 kg/liter. The diffusivity is 0.075 cm²/s. Assume no change in temperature and pressure. What is the value of the Thiele Modulus? What is the internal effectiveness factor? How much catalyst (kg) is required to obtain 15% conversion in the reactor? (a) (b) (c) A first-order, gas-phase reaction, A→ 1/2 B is performed in a PBR. Feed rate is 4 mol/s containing 10% A and the rest inerts. The PBR is packed with 10 mm diameter spherical porous particles. The intrinsic reaction rate is given as: rA' = 2 CA mol/kg(cat)-s. Bulk density of the catalyst is 2.5 kg/liter. The diffusivity is 0.075 cm²/s. Assume no change in temperature and pressure. What is the value of the Thiele Modulus? What is the internal effectiveness factor? How much catalyst (kg) is required to obtain 15% conversion in the reactor? (a) (b) (c)

Answer rating: 100% (QA)

SOLUTION a The Thiele Modulus Th is a measure of the intrinsic reactivity of the catalyst and can be calculated using the following equation Th rACA 1... View the full answer