# PSC Phase 6 is now active!

## Process Simulation Cup: Phase 6 is now on!

We have only one more phase to go! Hurry up to catch up with the PSC Cups collection.

You can have it all: The No 1 Overall Winner Title and the PSC Cups Champion Title!

Pssss.... The secret of the cups collection is to have few solutions ready and submit the best solution as the last one. In this way, you will climb the Highscore table ranks and earn more cups along the way!

Start: 25.09.2018

Wow, these bacteria need a lot of air! You found a technician that tuned the compressors in order to give you up to 80.000 kg/h now! You also noticed that the amount of living and dead biomass increased considerably due to your optimizations. Therefore, this is a good moment to look at the filtration process. You should adjust the parameters of the flow distribution to the cross-flow filtration units in order to further increase the profit.

Unlocked Design variables:

F01 (Air) F02 (Cane Juice) F03 (Ammonia) and F04 (Acetic Acid) from the fermenter section and D01 (Water for Dilution) D02 (Ration to MF1) D03 (Ratio to MF2) and D04 Pre-Heater Temp.) from the downstream section.

All other design variables are locked!

Locked Design variables (no changes to phase 4 beside D01-D04):

D05 = 50 kg/h

D06 = 0.05 bar

D07 = 0.85

D08 = 0.06

D09 = 30°C

D10 = 0.04 bar

D11 = 0.01

D12 = 250°C

D13 = 0.03 bar

D14 = 0.01

D15 = 120°C

Input Bounds (higher upper bound for F01):

6500 kg/h < F01 < 80000 kg/h

1000 kg/h < F02 < 10000 kg/h

1 kg/h        < F03 <   5000 kg/h

1 kg/h        < F04 <   5000 kg/h

1 kg/h < D01 < 40000 kg/h

• < D02 < 0.99
• < D03 < 0.99

75°C    < D04 < 170°C

Input Step Size:

F01:       1 kg/h

F02:       1 kg/h

F03:       1 kg/h

F04:       1 kg/h

D01 = 1 kg/h

D02 = 0.01

D03 = 0.01

D04 = 1 °C

Initial Values:

D01 = 15000 kg/h

D02 = 0.9

D03 = 0.05

D04 = 150 °C

Input Constraints:

D02+D03 < 1

Output Constraints (no changes to phase 4):

Stream 40 Massflowrate > D01 + D05

Stream 39 Vapor Fraction < 0.01

Stream 35 Temperature > 18°C

Stream 38 Temperature > 18°C

Stream 32 Temperature < Stream 31 Temperature

D07 > Stream 25 Vapor Fraction (equivalent to) Stream 29 Vapor Fraction > Stream 25 Vapor Fraction

### GOOD LUCK!

Process Simulation Cup Team

26 September 2018