Appendix l-A—A Case Study of Acetaminophen Production • 273 
Table l-A-7.— Electricity Requirements for Production of APAP 
Connected load 
HP 
kW 
Units/batch 
(hours operation) 
kWh 
Fermenters 
. . 200 
149 
144 
21,456 
Seed tanks 
. . 47.5 
35 
24 
840 
Chillers 
. . 580 
433 
11 
4,763 
Air compressor 
. . 275 
205 
86 
17,630 
Harvest tank 
. . 100 
75 
11 
825 
Decanter centrifuge 
. . 120 
90 
52 
4,680 
Process tanks 
..300 
224 
19 
4,256 
Crystallizing tanks 
..300 
224 
11 
2,464 
Turbo dryer 
. . 30 
22 
23 
506 
Cooling tower 
. . 40 
30 
144 
4,320 
Pumps (est. = 6 @ 7.5) 
. . 45 
34 
144 
4,896 
Lighting, instruments and general load 
Total kWh 
@ 0.05/kWh = $ 3,469 per batch 
@ 100 batches/yr = $346,900 per year 
. . 25 
19 
144 
2,736 
69,372 
SOURCE: Cenex Corp. 
Table l-A-8. — Water Requirements for 
Production of APAP 
Gal/batch 
Fermentation 35,000 
Tower makeup 63,000 
Process loss 100,000 
Chilled water makeup 30,000 
Direct cooling 50,000 
General use 25,000 
Total 303,000 gal 
Process water rate =$1. 00/M gals 
Cost = $303/batch 
100 batches/yr = $30,300/year 
SOURCE: Cenex Corp. 
