1. The Great Plains Synfuels Plant
Claudia Biffert
Engineering Manager
2013 Lignite Education Seminar

2. DAKOTA GASIFICATION COMPANY
Agenda
Products
Demonstrations
DAKOTA GASIFICATION COMPANY

3. Synthetic Natural Gas (SNG)
Meets pipeline quality
Transported 34 miles southwest to Northern Border Pipeline
Distributed out of Ventura, Iowa
Facts
Could heat one-half million homes
Equal to 28,000 barrels oil

4. Liquid Nitrogen Mainly used in plant for purging
Cryogenic storage medium
Oil well additive
Artificial insemination
Medical procedures
Liquid Nitrogen

5. Revenue Original 43.95% 53.92% 60.63% 30.89% 37.57% 30.76% 39.54%
8.58%
54.42%
11.15%
33.23%
5.82%
2.51%
1.86%

6. Xenon/Krypton Gases
Thermal Pane Windows
Halogen Lighting
Lasers

7. Phenol
Countertops
Plywood/OSB/Insulation
DVDs/CDs
Pharmaceuticals

8. Cresylic Acid Wire enamel solvent Antioxidants/Vitamin E Pesticides

9. Naphtha Gasoline blendstock Solvents Feedstock for benzene production
– Paint thinner
Feedstock for benzene production

10. Ammonium Sulfate

11. Anhydrous Ammonia (NH3)
Originally recovered from process
Capacity – 75 ton/day
In 1997, added additional capacity
Capacity – 1,100 tons/day

12. Carbon Dioxide (CO2)… -
Weyburn
Revenue
Environmental
DGC Pipeline

13. Carbon Dioxide
Reached a milestone of delivering 25 million metric tons of CO2 on Feb. 24, 2013, at 4:53 a.m.

14. Tar Oil
Fuel Oil #6

15. Revenue Original 43.95% 53.92% 60.63% 30.89% 37.57% 30.76% 39.54%
8.58%
54.42%
11.15%
33.23%
5.82%
2.51%
1.86%

16. Future Opportunities Liquid fuels Lubricants Neon/Argon Diesel
Gasoline
Lubricants
Neon/Argon

17. Summary
New Products
Urea
SNG
Revenue