Shell Coal Gasification Process for Power

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)


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


Input,t/d

Shell China Coal Gasification Licences


• 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


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.


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


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


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


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?


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)


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


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)


Shell Coal Gasification Process for Power

Thank you for your attention…..

Shell Coal Gasification Process for Power

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