1. Ch. 2: Dynamics: Tower Diameter
Units F
Eng
1.0
ft/s & lb/ft3 SI
1.22
m/s & kg/m3
Check steady state simulation for Qmax & v

2. Column Hydraulics ASPENPLUS: Radfrac block Report
 include hydraulic parameters
Run simulation
Results
Radfrac Block
Profiles
Hydraulics tab 

3. In-Class Exercise P = 2 bar sat’d liq 20 stages Feed = above stage 10
D = 11.8 kmol/hr
RR = 1.5
Benzene 11.8 kmol/hr
Toluene 11.8 kmol/hr

4. In-Class Exercise

5. In-Class Exercise
AspenPlus
Tray sizing

6. Chapter 3: Controller Tuning
Type Kc
(gain) I
(reset time) F
(filter)
Flow
0.5
0.3 min
0.1 min
Level (surge) 2
(reactor) 10
(others)
See text
Pressure

7. Chapter 3: Controller Tuning
F, P, L - are simple controllers
Temperature & Composition
More difficult
Why ?
A: lags or deadtime
Simulators respond instantaneously
To make more realistic
Add lag time in control loop
Table 3.1 Typical values
Rest of Chapter 3:
Tuning techniques