This** preview**
has intentionally

**sections.**

*blurred***to view the full version.**

*Sign up*
This** preview**
has intentionally

**sections.**

*blurred***to view the full version.**

*Sign up*
This** preview**
has intentionally

**sections.**

*blurred***to view the full version.**

*Sign up*
**Unformatted text preview: **Problem 5 A 1 Liter/sec flow of a 20% ozone-80% air mixture passes through a plug flow reactor (PFR) at 1.5 atm and 93°C. Under these conditions ozone (O 3 ) decomposes by the following homogeneous reaction 20 3 30 2 , -r ozone = k C ozone 2 k = 0.05 [Liter/mol . sec] What reactor size is needed for 50% decomposition of ozone? Problem 6. For the first-order reaction A B on a CSTR, start from the CSTR design equation to derive the expression k = X/(1-X) – What assumptions are made? Obtain τ an equivalent equation for the second-order reaction 2A 5B (gas phase, feed is pure A). (a) F A0 X = k C A V So, v C A0 X = k C A0 (1-X) V Since V/v 0 = τ Then, X = k (1-X) τ And, X/(1-X) = k. τ (b) F A0 X = k C A 2 V = X = k C τ A0 (1-X) 2 / (1+1.5X) 2 So, X (1+1.5X) 2 = k C τ A0 (1-X) 2...

View
Full Document

- Spring '14
- LanceL.Lobban
- Fluid Dynamics, Plasma, CaO