shell coal gasification process for power
TRANSCRIPT
Shell Coal Gasification Process for Power
Nuon Magnum Power Initiative 1200 MWe multi-feed IGCC
Presentation for
2nd International Freiberg Conference on IGCC & XtL
Rik van der Ploeg, Gerard Grootveld, Matthieu Fleys, Lisanne Deprez
(Nuon Input: Rien van Haperen, Robert de Kler)
22nd International Freiberg Conference on IGCC & XtL
Shell Global Solutions
Combining the operating experience of over 4500 staff with proven implementation skills and advanced technologies
• Diverse cultures and nationalities
• Over 50 years of implementing business and engineering solutions
• Continued investment in innovation
Houston
Chester
Hamburg
Amsterdam/ The Hague
Rouen
Kuala Lumpur
Beijing
Tokyo
Buenos Aires
Moscow
Dubai
32nd International Freiberg Conference on IGCC & XtL
Input,t/d
Shell China Coal Gasification Licences
42nd International Freiberg Conference on IGCC & XtL
• More than 200 lessons, >80% in China already, a.o.
• Improvement Feed, Reactor + Syngas Cooler
• Better fluidization/blow-back/purges
• Simpler water-steam cycle, less welds
• Better SGC fouling mitigation, deeper quench
• Special mechanical-thermal expansion details
• Better accessibility of key area’s
• Improvement Slag Bath
• Slag crusher (option)
• Membrane wall Heat Skirt & Water Spray nozzles
• Extra pump for assisted sluicing
SCGP Lessons Learned Buggenum -> Magnum
Burners
Quench
SGCGasifier
Duct
Slagbath
52nd International Freiberg Conference on IGCC & XtL
Nuon’s Competitive Advantage on CCSNuon has a competitive advantage in the energy market: IGCC (coal gasification) has the highest potential for economically feasible
CO2 capture applications (for both existing and new plants). The costs for CO2 capture for a IGGC plant range from 20 to 25 €/tonne CO2 for new build, while the costs for conventional coal plants range from 30 to 50 €/tonne CO2.
62nd International Freiberg Conference on IGCC & XtL
Nuon Magnum IGCC Initiative (Phase 1)
S
Entrained flow gasifier Wet gas cleaning
Acid removalWaste water treatment
Demi water production
Oxygen and Nitrogenproduction
GasifierPower Block
Power
Nat.G
as
Air Sep
Steam / Heat
Emissions
N2
RawSG
Power
Air
O2
Coal
Sec. Fuels
By-products
Section 1: Gasification
Section 2: Air Separation
Section 3:
CCGT
H2S AGR-SRU
Steam
Solid Biomass
Chemicals
N2
Cooling W
ater
Chemicals/Water
Emissions/Flare
3 * SCGP
1-2 * ASU
3 * PB(+ NG)
3 * AGR
2*SRU+ 1*Incin
Syngas Clean
IGCC efficiency 46% LHV
72nd International Freiberg Conference on IGCC & XtL
Nuon Magnum IGCC Initiative (Phase 1 / Phase 2+)
S CO2
Entrained flow gasifier Wet gas cleaning
Acid removalWaste water treatment
Demi water production
Oxygen and Nitrogenproduction
GasifierPower Block
Power
Nat.G
as
Air Sep
Steam / Heat
Emissions
N2
RawSG
Power
Air
O2
Coal
Sec. Fuels
By-products
Section 1: Gasification
Section 2: Air Separation
Section 3:
CCGT
H2S AGR-SRU
Steam
+ Shift+ CO2AGR
Solid Biomass
Chemicals
N2
Cooling W
ater
Chemicals/Water
Emissions/Flare
3 * SCGP1 * SCGP
1-2 * ASU0-1 * ASU
3 * PB(no NG +)
3 * AGR1 * AGR
2*SRU+ 1*Incin1*SRU
Partial
IGCC efficiency 42% LHV
82nd International Freiberg Conference on IGCC & XtL
Phase 1 (BASE CASE 2010)• IGCC for F-class for 1200 MW_e net power• Multi-fuel 3*2000 tpd SCGP for 65% syngas and 35% NG Power• Solids Fuels: Hard coals and partial petcoke, biomass, sewage sludge, refuge • SCGP with 50 bar, 350 oC Syngas Cooler (no CCS)• Gas treatment optimised with Sulfinol-M and Claus SCOT Sulphur Recovery
Phase 2 (FUTURE stepwise upgrading options after Phase 1)• Partial Sweet rather than Sour Shift per gas string & special CO2 AGR• Plus 30-80% CCS scope (in 2 or 3 subsequent steps)• CCS scope ~50% (after Step 2) + biomass for ~80% CCS equivalent!• IGCC 100% syngas (extra SCGP &) vs extra NG spike (loss of LHV)?• Thus 4th Reactor added, including ancillaries?
Nuon Magnum Power – IGCC Design Summary
92nd International Freiberg C
onference on IGCC &
XtL
Typical CO2 capture cost split-up
(Nuon M
agnum)
LHV loss from CO
shift
Use MP steam
Addit ional
syngas
compression
CO2 absorb t ion
circu lat ion
CO2
regenerat ion
CO2
pressurizat ion
Utilit ies
Catalyst
consumption
Solven t
consumption
Operat ion &
Maintenance
Depreciat ion
The
ma
in
focu
s of
NU
ON
Higher
Syngas Pressure
102nd International Freiberg Conference on IGCC & XtL
IGCC CCS Options Shell’s View (1)
Dry/wet
solids
removal
COS / HCN
H2S removal
(Sulfinol M)
Power block
SCGP &HT Cool
Coal
Power
Claus/SCOT
S
Dry/wet
solids
removal
COS / HCN
H2S removal
(Sulfinol M)
Sweet WGS
CO2 removal
Power block
SCGP &HT Cool
Coal
Power
Claus/SCOT
S
CO2
Dry/wet
solids
removal
Sour WGS
CO2 and H
2S
removal
(Physical)
SCGP &HT Cool
Coal
Claus/SCOT S
CO2
IGCC without CCS IGCC with deferred CCS IGCC with CCS
Slag
Steam
Slag
Steam
Slag
Steam
Flyash Flyash Flyash
Sat. &Diluent
Sat. &Diluent
Power block
Power
Sat. &Diluent
Sat.
Desat.
Steam?
LT Cool
Steam?
112nd International Freiberg Conference on IGCC & XtL
IGCC with deferred CCS (Magnum)
Sweet Shift – Pro’s� Easier implementation
downstream H2S-AGR (Magnum)
� Easier high saturation to GT
Sweet Shift – Cons
� Syngas ex H2S- AGR dry & 40 oC� Small range T_in/out = 340-480 oC
Nuon Magnum Power – IGCC CCS Options Shell
IGCC with CCS (from day 1)
Sour Shift – Pro’s� Syngas ex WS > 20% H2O &170 oC
� High range T_in/out = 250-480 oC
Sour Shift – Cons� Conversion existing H2S-AGR to
combined and selective unit (Magnum)
� More difficult/capex to install (Magnum)
122nd International Freiberg Conference on IGCC & XtL
CO2 storage options North of Netherlands for Nuon
Magnum location
Annual capacity, assuming 25 year injection period:
-From 2015: 60 MMTA
-From 2025: 100 MMTA
132nd International Freiberg Conference on IGCC & XtL
Nuon Magnum Power & Shell IGCC Design + CCS
• Use multi-fuel IGCC concept, include 40% renewables• Use (partial) CCS mode alone or combined with others (in steps)
• SCGP has versatile R-HP/MP SGC options (scaleable to F-class GT)• Magnum 50-60% CCS equivalent to NG CCGT (Step 2 CCS?)
• Magnum hybrid-CCS solution for ‘’~80% apparent CCS” lowers IGCC efficiency ‘’only’’ 46 -> ~42% LHV (Step 2 CCS + biomass)
142nd International Freiberg Conference on IGCC & XtL
Shell Coal Gasification Process for Power
Thank you for your attention…..