1. Nuon Future plan: Magnum Project
Presentation RWTH-Aachen ( )
Nuon Future plan: Magnum Project

2. Subjects Presentation RWTH-Aachen (02.05.2006) Introduction Nuon
Definition and reasons for the Magnum Project
Overall technical data of the Magnum Power Station
The predecessor: the Nuon Buggenum Power Station
Lesson Learned from the operation of the Nuon Buggenum Power Station

3. Electricity customers Green electricity customers
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What is Nuon? Nuon is a Dutch energy company, market leader in the Netherlands
Electricity customers
100% = 7 mln
Gas customers
100% = 6.4 mln
ESSENT
DELTA
ENECO
Nuon
Green electricity customers
100% = 2.4 mln
Heat customers
100% = 0.2 mln
1) Market share for gas and electricity are based on the number of connections
Source: EnergieNed ‘Energy in the Netherlands 2004’, Company reports

4. Nuon - generation portfolio overview
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Nuon is third generator in Netherlands
16 ‘grey’ generation assets on 9 premises in 4 clusters; Total installed capacity about MWe
Efficient, dominantly gas fired generation
Production of heat for district heating in Utrecht, Nieuwegein, Amsterdam-Zuidoost, and steam for Corus
Several renewable assets in 7 European countries, dominantly wind; installed capacity about 500 MWe
Syngas development and operational experience: Buggenum (coal, 250 MWe), Velsen (BFG, 400 MWe), IJmond – JV Nuon/Corus (BFG, 250 MWe)
Cluster Amsterdam
Cluster Oost
Cluster Utrecht
Renewables
Nuon - generation portfolio overview

5. Presentation RWTH-Aachen (02.05.2006)
Why the MAGNUM PROJECT? Establish sound investment decision for the Magnum Power Station.
What is the Magnum Power Station?
multi-fuel, highly flexible power station;
very large capacity (1200 MWe);
net efficiency >= PC power station;
superior environmental performance;
(future) CO2-capture readiness;
year 2010/2011: connected to the E-grid;
based on the Buggenum power station;
“Lessons Learned” incorporated in design.

6. Rationale for the Magnum Project
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Rationale for the Magnum Project
Nuon must build at least 1200 MWe new power production capacity:
replacement of old power stations with rather moderate efficiency;
growth in electricity consumption.
IGCC (entrained bed technology) offers superior production and trading opportunities:
can gasify a multitude of fuels with high efficiency and without operational problems;
can therefore adequately respond to changes in fuel market prices;
can produce both base load and peak load E-products;
can co-gasify large amounts of renewables (subsidies).
Best Available Technology for Power Production with CO2-capture:
moderate efficiency losses when CO2 is captured;
Best Available (Environmental) Technology :
SO2 removal: >99 %;
NOx-emission: can comply to requirements beyond year 2015;
dust: negligible;
heavy metals: emissions: Ni: 1.5%; As: 1%; rest negligible.

7. Presentation RWTH-Aachen (02.05.2006)
Gasifier
(# units) CC
Power
Nat.Gas
Air Separation Unit
Steam / Heat
Emissions N2
Syngas
Air O2
Coal
Sec. Fuels
By-products
Section 1: Gasification
Section 2: Air Separation
Section 3: CCGT
Gas cleaning
Steam
CO2
capture
Solid Biomass
Chemicals
Cooling Water
Oxygen and Nitrogen production
Entrained flow gasifier
Wet gas cleaning
Acid removal
Waste water treatment
Demin water production
Maximum syngas
production 900 –1200 MWth
By-products
CO2
Combined Cycle Dual fueled Gas Turbines
(Syngas and/or Natural gas fired)
5 x 250 MW CC Units
Total Heat Input 2600 MWth
Total Electrical Output 1200 MWe
Simplified BFD of the Magnum Power Station
Ultimate design subject to change.

8. The Predecessor: the Nuon Buggenum IGCC Power Station
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The Predecessor: the Nuon Buggenum IGCC Power Station
Nuon Power Buggenum BV
Net Output: 250 [MWe]
Coal input: 2000 [t/d ]
Shell Gasification Technology
Gas turbine: Siemens V94.2 Start up 1993
Ramp speed: 3.5 [MWe/min]

9. Presentation RWTH-Aachen (02.05.2006)
Simplified Process Flow Diagram of the Nuon Buggenum Power Station
Coal Milling and Drying
Coal Dust
Feeding
Coal Gasification
Syngas Dedusting/
Dehalogenation
Syngas
Desulphurisation
Clean Gas Conditioning/
Power Production

10. Presentation RWTH-Aachen (02.05.2006)
“Lessons Learned” from Nuon Buggenum Power Station Operation; Technical overview
Technical Problem Areas:
Syngas Production/Treating
Waste Water Production
Combined Cycle/ Air Separation Unit
Work Done:
5000 plant design changes!

11. Presentation RWTH-Aachen (02.05.2006)
“Lessons Learned” from Nuon Buggenum Power Station Operation; General Overview
Problems encountered
Mechanical problems
Process problems; process control problems
Organisational problems

12. Presentation RWTH-Aachen (02.05.2006)
“Lessons Learned” from Nuon Buggenum Power Station Operation; Mechanical/Material Problems
Gasification Island
Thermal stresses caused by non-flexible tube-vessel penetration
Severe erosion/corrosion problems in gasification water systems
Severe corrosion in syngas scrubber
Severe damage of structures with ceramic lining
Flaws in the construction of the dust filter

13. “Lessons Learned” from Nuon Buggenum Power Station Operation.
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“Lessons Learned” from Nuon Buggenum Power Station Operation.
Process problems; process control problems
Gasification Island
Coal dust feeding problems
Slagging problems in gasifier
Degradation of H2S-absorbent
Widespread scaling in waste water systems
Combined Cycle Unit/ Air Separation
Combustion instabilities in gas turbine
Product purity of oxygen/nitrogen

14. “Lessons Learned” from Nuon Buggenum Power Station Operation. Results
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“Lessons Learned” from Nuon Buggenum Power Station Operation. Results
Syngas + Natural gas
Syngas only

15. Conclusions Presentation RWTH-Aachen (02.05.2006)
Nuon regards IGCC as the best option for a future new to build large power station. The reasons are that:
IGCC has/is:
Superior fuel flexibility
Best Available Technology for power production with CO2-capture
Best Available (Environmental) Technology
Nuon is experienced with IGCC-operation:
“Lessons Learned” from the Nuon Buggenum Power Station will be fully implemented in the Magnum design

16. Thank You for your Attention!
Presentation RWTH-Aachen ( )
Thank You for your Attention!