rwe's 450mw igcc-ccs project - status and...
TRANSCRIPT
RWE 5/10/2010 PAGE 1
RWE's 450MW IGCC-CCS Project - Status and Perspective
4th International Freiberg Conference on IGCC & XtL Technologies, 3 - 5 May 2010, Dresden, Germany
Werner Renzenbrink, Dietmar Keller, Johannes Ewers RWE Power AG
RWE 5/10/2010 PAGE 2
Coal remains essential for tomorrow's energy supply, but it has to become more climate-friendly: RWE’s Clean Coal Power Strategy
Horizon 1: Modernization to increase efficiency
WTA prototype
Horizon 2: Further efficiency increase
700 °C test plants
Horizon 3: Virtually CO2-free (Carbon Capture & Storage, CCS)
450MW IGCC-CCS
Post combustion capture (PCC)
Power plant portfolio: continuous renewal
Under way: capacity of 5,400MW investment of €6.2 bn
Geological storage/ Industrial use
Commercial use
RWE 5/10/2010 PAGE 3
IGCC-CCS plant: Process configuration established
> Coal drying & milling WTA drying technology, roller mills> ASU: Conventional concept, large scale (3,600t O2 /d)> Gasification: Entrained-flow gasification (1,000MWth , 40bar)
quench mode > Gas treating: Sour shift, H2 S/CO2 capture, SRU, CO2 compr.> Gas conditioning Dilution with N2 , H2 O > CCPP: F-class GT technology, diffusion burners, 450 MW
GasificationGasification Gas treatingGas treating CCPPCCPPDrying/MillingDrying/Milling
ASUASU
Rawlignite
N2
O2
CO2 /pipeline
Coexistence of proven technologies and new developments. Above all the demonstration of their interaction is decisive.
Gas conditioningGas conditioning
Air
CO/H2 -rich H2 -rich (85%) H2 -diluted (50 %)
RWE 5/10/2010 PAGE 4
IGCC-CCS plant: Hürth location near Cologne selected
> A location with a long tradition: 12 years of industrial-scale coal gasification / synthesis gas production (HTW1)
> Commitment to lignite – connection to the opencast mines via railway> Developed infrastructure
1High-temperature Winkler process
RWE 5/10/2010 PAGE 5
IGCC-CCS plant: Potential CO2 storage sites identified
Areas investigated
DK
PL
NL
> Comprehensive screening of onshore and offshore storage potential by RWE Dea
> Two preferred deep saline formations (DSF) identified in Schleswig-Holstein
> Active involvement of the public, policy-makers and administrations
> Public presentation of the project in 03/2008 met with positive response
> Prospection permit granted in 03/2009.
> Operational plan for seismic investigations submitted in 04/2009
> Erosion of political and public support in the sequel
RWE 5/10/2010 PAGE 6
CO2 pipeline cannot be planned further until the geographic location of the final storage facility is known
> Pipeline was investigated within the scope of a feasibility study.
> Technically, the pipeline is feasible.
> The uncertainty lies in public acceptance.
> The regional planning and plan approval authorities in three federal states are responsible for approval in the case of IGCC- CCS.
> Time and effort required for approval procedure virtually independent of pipeline length.
As an essential CCS element, the pipeline has to be proven to be feasible regardingtechnology, cost and acceptance within the scope of the demonstration project. Approval process currently suspended due to missing storage facility.
Storage region in North Frisia
Hürth power plant
?
RWE 5/10/2010 PAGE 7
IGCC-CCS plant: Status today (1)
Essential implementation preconditions not in place
German CCS Law
> Contrary to expectations, no adoption in mid-2009
> Bill currently being prepared by the federal government (Environment/ Economics Ministries)
• Expected to apply to demonstration projects only• Completion hopefully at end-2010
> Other key energy-policy issues will influence the CCS topic:• Definition of a German energy concept (Prognos/EWI/GWS study)• Longer duration of nuclear plants in Germany
RWE 5/10/2010 PAGE 8
IGCC-CCS plant: Status today (2)
Lack of political support and public acceptance
> Public involvement in the Seimics Operational Plan in 04/2009 was the starting point of extensive civil protests
RWE 5/10/2010 PAGE 9
IGCC-CCS plant: Status today (3)
In the absence of a storage solution, RWE has suspended any further implementation of the project (engineering contracts concluded with supply options).
Lack of political support and public acceptance
> Initial approval by policy-makers and associations has turned into categoric refusal.
> Schleswig-Holstein's state parliament decided in 09/2009 not to permit any exploration for carbon storage.
RWE 5/10/2010 PAGE 10
IGCC-CCS plant: Technical risk analysis
Coal drying WTA drying technology, prototype (scale 1:1) in trial run.
Coal milling Proven
Gasification Gasification proven, however scale-up requirements (pressure, capacity), quench section and BWT largely untrialled. Proof for overall system necessary.
Gas treating CO shift: proven AGR: proven SRU: provenCO2 compression: scale-up requirements, demonstration of
compressor-pump interaction
CCPP Proven F-class GT, reliable operation with H2 -rich gas to be demonstrated for all operating modes. High N2 and steam demand for denox results in significant loss of efficiency
ASU Conventional, proven concept, very high power consumption.
Overall process Proof of operating ability incl. all offsites with commercially required energy availabilities is ambitious.
Risk assessment ( = high; = medium; = low)
RWE 5/10/2010 PAGE 11
IGCC-CCS in competition with PCCComparison with most advanced dry lignite (DL)-fired PP
Conclusion :Significant capex reduction needed for commercial IGCC CCS plants to become an attractive solution for the power market.Coal gasification remains indispensible for CtG/CtL applications
Spec. capital costs [€/KWn, 2010]
4,500
3,000
2,000
Multi-train IGCC-CCS (1,800MW)
DL w. capture, PCC (1,000MW)
DL w/o capture (1,000MW) Net electric
efficiency [%, LHV]
34-36 36-3946-49
RWE 5/10/2010 PAGE 12
IGCC-CCS project - Conclusions
Lacking legal basis and storage site do not allow projectimplementation as scheduled.
Previous cost and performance data must necessarily beimproved in the next planning phase.
RWE continues to pursue its PCC activities in parallel.
Coal gasification remains an indispensable option for CtL/CtGroutes.
Pipeline and storage site are the decisive hurdles for all CCS activities in Germany.
