Potassium Hydroxide Refining of Cottonseed Oil

NAOH

KOH I

KOH 2

MEASUREMENTS:

REFINED OtL LBS (R)

76,328

75,807

75,008

WET CAUSTIC USED

7,034

8,285

3,489

CAUSTIC CONCENTRATION

19.6%

29.0%

28.6%

DRY CAUSTIC USED (D)

1,379

2,403

992

SOAP M&V(M)

57.5%

44.6%

48.4%

SOAP PERCENT CAUSTIC (S)

6.7%

11.1%

7.4%

CALCULATIONS:

SOAPSTOCK PRODUCED (SP) = D/S

20,577

21,645

13,407

CRUDE OIL IN SOAP (C)=[SP X (100-(M+S))]

7,367

9,589

5,926

REFINING LOSS = [C/(C+R) X 100

8.8

11.2

7.3

ECONOMIC ANALYSIS USING CRUDE COTTONSEED OIL

NAOH

KOH

SAVINGS

CRUDE % FFA

1.0%

1.0%

CRUDE REFINED (Million lbs)

1.0

1.0

% DRY CAUSTIC TREAT (based on excess)

1.65%

1.22%

DRY CAUSTIC USAGE (lbs/yr)

16,500

12,200

CAUSTIC PURCHASED (lbs/yr)

33,000

27,111

CAUSTIC PRICE ($/TON) - DRY

375

585

CAUSTIC PRICE ($/LB) – WET

0.094

0.146

CAUSTIC PURCHASED ($/yr)

$3,094

$3,965

$871

OIL YIELD IMPROVEMENT (%)

1.50%

YIELD IMPROVEMENT (lbs/yr)

15,000

YIELD IMPROVEMENT @ $0.28/LB ($/YR)

$4,200

NET SAVINGS ($/yr)

$3,329