1. Turbomachinery in Biofuel Production TURBO POWER – project PROCESS4
TURBO POWER Program Conference – 14 April 2011
Professor Mats Westermark
PhD student Martin Görling

2. Main objectives of the project:
To perform a techno-economic feasibility study of the
integration of turbo-machinery into different promising
bio-fuel production processes.
To improve the technological knowledge in the field of
turbo-machinery and bio-fuel production.

3. Cellulosic & lignin biomass
Biofuels
Biogas/SNG
FT-Diesel
Cellulosic & lignin biomass
Gasification
Methanol &DME
Hydrogen

4. Biofuel production efficiency
Energy efficiency
Biofuel yield
H. Thunman, F. Lind, och F. Johnsson, Inventering av framtidens el- och värmeproduktionstekniker - Delrapport Energikombinat, Elforsk, 2008.

5. 20% biofuel in Sweden

6. Steam turbine application
Large amounts of excess heat
steam turbine power production is a given component in the biofuel production systems
Improvement of steam cycle by minimizing process steam consumption:
Humidification
Hydrogasification

7. Minimizing steam demand for gasification

8. Results – SNG production 170MW
Case A
Case B
Reference case (steam injection)
Gasification pressure [Bar] 30 15
Power penalty [MW]
6.25
2.57
Humidification from waste heat recovery + steam extraction
5.11
1.93
Power savings compared to reference [MW]
1.14
0.64
Power savings compared to reference [%]
18.2
24.9

10. Steam Turbine Calculations
Base Case B
Humidification
40 bar
40 bar
15 bar
waste heat
10, 5.5 bar

11. Gas turbine applications

12. Pinch Analysis – Methanol production 250MW
Possibility to integrate up to 2 x SGT-800 for preheating in a 382MW methanol plant

13. Gas turbine integration – Conclusions
Parallel integration
Hybrid (NG fired GT)
~10MW extra electricity is gained from integration compared to stand alone combined cycle (2 x SGT-800)
Natural gas efficiency 58%
Syngas fired GT
Same synergies expected as for hybrid
Two separate gasifiers needed for fuel and power production
GT syngas combustion difficulties
Parallel configuration
Energy consuming oxygen production outweigh the synergies
Increased complexity

14. Publications by PROCESS4
Licentiate thesis:
Turbo machinery in biofuel production – Licentiate thesis, 2010, Martin Görling
Papers:
Görling, M. and Westermark, M., Increased Power Generation by Humidification of Gasification Agent in Biofuel Production. World Renewable Energy Congress 2010
Görling, M. and Westermark, M., Integration of Hybrid Cycles in Bio-Methanol Production. 23rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
Magnusson, M., Mohseni, F., Görling, M. Alvfors, P., Introducing Renewable Electricity to increase Biogas Production Potential. International Conference on Applied Energy 2010
Farzad Mohseni, Martin Görling, Per Alvfors, Synergy effects on combining hydrogen and gasification for synthetic biogas. World Renewable Energy Congress 2011
Görling, M. and Westermark, M., Integration Feasibilities for Gas Turbines in Biofuel Production. Full paper submitted to ECOS2011

15. Reports by PROCESS4 Project reports: Master theses:
Turbo machinery in biofuel production – Report work package 1, 2009, Martin Görling
Turbo machinery in biofuel production – Final report, 2010, Martin Görling
Master theses:
Production of SNG from wood biomass; Integration with power production and district heating, 2011, Muhammad Shahbaz, Aman Bin Umar, Muhammad Asif Rasheed
Humidification of gasification media in biofuel plants, 2010, Susanna Stein
Methanol Overview, 2009, Antoine Roger
SNG Production by Biomass Hydrogasification, 2009, Emmanuel Otite 
Turbo machinery in Biofuel Production, 2008, Martin Görling

16. Future work Work Package 3 ”Steam cycles in local SNG production”
Technical and economical assessments of tri-generation plants.
Small scale SNG and bio-coal production (<100MW input)
Integration in existing CHP plants.
Rational use of low temperature waste heat.
Simulation of seasonal and daily variation of the heat load.

17. Thank you for your attention Questions?