1. Analysis Assignment Two Tasks: Prepare a partial mass balance Run lab experiments and calculate kinetic coefficients

2. Analysis Assignment Don Robinson Required Files Information about the assignment is in “Analysis & Planning” Background information is in “Basic Data” See “Laboratory Facilities” for instructions on how to run the lab reactor simulator program

3. Analysis Assignment Don Robinson Mass Balance Streams Feed to Syngas process Output from Syngas process Added CO 2 Feed to methanol process Intermediate step: 100% CO=>CO 2 Output from methanol process (100% conversion, not equilibrium)

4. Analysis Assignment Don Robinson Components Methane Water Hydrogen CO CO2 Nitrogen Methanol

5. Analysis Assignment Don Robinson Components cont. Also include total stream Units: kg-moles/hr

6. Analysis Assignment Don Robinson Catalyst Analysis Objective Arrhenius constants (A & E) methanol + CO 2 + 3H 2 => ethanol + 2H 2 O ethanol + 5CO 2 + 15H 2 => fusel oil + 10H 2 O 2ethanol => acetone + methanol + H 2 E in kJ/kg-mol A’s (same as kf,kr) some combination of kg- mol, hours, m 3

7. Analysis Assignment Don Robinson Simulated Runs Reactor size (1X2 or 2X12.5 cm) Temperature (200 & 225°C) Pressure (fixed at 3900 kPa) Feed rate (.5 to 20 kg/hr) Methanol & Ethanol rates (50-2000 gms/hr)

8. Analysis Assignment Don Robinson Data Input

9. Analysis Assignment Don Robinson Summary of Conditions

10. Analysis Assignment Don Robinson Feed

11. Analysis Assignment Don Robinson Product

12. Analysis Assignment Don Robinson Forward Rate Const. Calcs Consider the simple case of A + B  C Rate = kf [A] [B] Rate in moles per hour per m 3 [A],[B] in moles/m 3 Base rate on void volume (void fraction =.33) What is the missing parameter?

13. Analysis Assignment Don Robinson Molar Density Required to convert mole fraction to moles/m3 Get from HYSYS model “Start.hsc” on CD in “Files” Suggestion: Get one density (at average feed conditions) for each temperature you are going to run at and apply this to the whole reactor

14. Analysis Assignment Don Robinson Variation of K,kf,kr With T Arrhenius equation k = A*exp(-E/RT) Since we will know the k’s at two different T’s, the only issue is what value of R to use Perry’s Handbook has a table of R values in various units HYSYS wants E in kJ/kg-mol

15. Analysis Assignment Don Robinson Entering Data in HYSYS

16. Analysis Assignment Don Robinson Check Base, Phase, Units

17. Analysis Assignment Don Robinson Schedule A group: Today, Friday, next week Wednesday B group: Wednesday, next week Monday, Friday If necessary a session on Saturday 27 th Due at start of class Monday September 29