CO2 Capture and Hydrogen Production in IGCC Power Plants

Gasification Technologies ConferenceOctober 5-8, 2008

October 8, 2008Doug Jack

VP Technology

Outline

• Introduction to Eltron Research & Development• Eltron’s Membrane System• IGCC – Carbon Capture & Storage (CCS)• Techno-Economic Comparative Modeling• Summary

October 8, 2008

Introduction to Eltron

• Eltron Research & Development Inc.– 60 patents (25 licensed)– Eltron Water Systems LLC

• Commercialization of water purification technologies– Continental Technologies LLC

• Design and fabrication of engineered systems and pilot plants

• Eltron Areas of Expertise– Energy: Fuels, Fuel Reforming, Membranes– Materials & Catalysts – Air and Water Purification– Chemicals & Chemical Processing

October 8, 2008

Program Objectives

• Develop H2/CO2 Separation System, whichDevelop H2/CO2 Separation System, which– Retains CO2 at coal gasifier pressures– Operates near water-gas shift conditions p g– Tolerates reasonably achievable levels of coal-

derived impuritiesD li H f i f l ll t bi– Delivers pure H2 for use in fuel cells, gas turbines, and hydrocarbon processing

– Is cost effective compared to alternative technologiesIs cost effective compared to alternative technologies for carbon capture

October 8, 2008

CO2 / H2 Membrane System

H2O + CO + CO2 + H2H

N2

H

HighPressure

(450-1000 psig)

LowPressure

(0-400 psig)H

H2

H O + CO + CO

HH2 + N2H2O + CO + CO2

Hydrogen Dissociation Catalyst Hydrogen Desorption Catalyst

2 2

October 8, 2008

IGCC Test Conditions

• 41% H2, 17% CO2, 2,3% CO, 37% H2O > 450 i• > 450 psig

• 280-440oC

October 8, 2008

Membrane Performance

• Eltron’s hydrogen membrane performs better than any y g p yother membrane under development for H2 separation from coal.

• High H2 flux rates > 200 mL/min/cm2 (400 SCFH/ft2) demonstrated.

• 1.5 lbs H2/day separation demonstrated under expected operating conditions.

October 8, 2008

Membrane Permeation Data

450

500

300

350

400

450

/ft2 S

TP)

150

200

250

300

Flux

(SC

FH/

0

50

100

H2

0 50 100 150 200 250 300

Time (Hours)

Test A Test B Test C Test D Test E Test F Test G Test H

October 8, 2008

IGCC-CCS

October 8, 2008

Comparative Modeling

Gas Cleaning CO2 Capture / H2S i(Sulfur Removal) Separation

Case 1 Conventional Conventional

Case 2 Conventional Eltron System

Case 3 Warm Gas Cleaning Eltron System

Eltron’s Membrane System:– Higher Carbon Capture

Case 3 Warm Gas Cleaning Eltron System

Higher Carbon Capture– Higher Thermal Efficiency– Lower Cost of Electricity

October 8, 2008

Techno-Economic Model Assumptions*

Plant Capacity 275 MW

Required Carbon Capture 90%

Required Sulfur Removal 99%Required Sulfur Removal 99%

Required NOx Removal ≤ 0.05 lb/MMBTU NOxNOx

Cost of Electricity DOE Financial Model v3.0

* FutureGen: Integrated Hydrogen, Electric Power Production and Carbon Sequestration Research Initiative, US DOE Office of Fossil Energy, March 2004.

October 8, 2008

Case 1: CO2 Capture with Current TechnologyCurrent Technology

3% of CSulfur Recovery

2-Stage

GasifierAirSeparation

UnitO2 Syngas

WaterGas ~93% H2

Purity HydrogenTurbine

Selexol

CO2

6% of CShift

Compressor

90% of CCarbon Capture

&Storage

Thermal Efficiency = 27.4%COE = $115.5 / MWh

October 8, 2008

Case 2: CO2 Capture with Eltron H2Separation Membrane TechnologySeparation Membrane Technology

9% of CSulfur Recovery

AmineAbsorber

GasifierAirSeparation

UnitO2 Syngas

WaterGas

EltronMembraneH2 / CO2

S ti

HydrogenTurbine

H2

Absorber0% of CShift

Separation

CO

90% of C

CO2

CO2 Clean-up

Compressor

Carbon Capture&

StorageThermal Efficiency = 32%COE = $114.5 / MWh

October 8, 2008

Case 3: CO2 Capture with Eltron H2Separation Membrane & Warm Gas CleaningSeparation Membrane & Warm Gas Cleaning

4% of CSulfur Recovery

0% of C

Warm Gas GasifierAir

SeparationUnit

O2 Syngas

Sulfur Recovery

WaterGas

EltronMembraneH2 / CO2

S ti

HydrogenTurbine

H2

Cleaning

Shift

0% of CSeparation

CO

95% of C

CO2

CO2 Clean-up 99% of C

Thermal Efficiency = 33.6%COE = $106 / MWh Compressor

Carbon Capture&

Storage

October 8, 2008

Economic Results Summary

Pre-combustion Gas Cleaning & CO2 CaptureMethod

2-Stage Selexol

Cold Gas Cleaning &

Eltron Membrane

Warm Gas Cleaning &

Eltron Membrane

Improvement

Method Membrane Membrane

Thermal Efficiency 27.4% 32.0% 33.6% 6.2%

% CO2 Captured 90% 90% 99% 5.0%% CO2 Captured 90% 90% 99% 5.0%

Cost of Electricity ($/MWh)

115.5 114.5 106 9.5

October 8, 2008

Progress Towards DOE FutureGen Targets

Performance Criteria 2010 Target

2015 Target

Current Eltron Membrane

g g

Target Target Membrane

Flux, SCFH/ ft2 200 300 450Operating Temperature, oC 300-600 250-500 250-440

Sulfur Tolerance (ppmv) 2 20 20 (prelim.)System Cost ($/ft2) 500 <250 <200∆P O ti C bilit ( i) 400 800 1000 1 000∆P Operating Capability (psi) 400 800-1000 1,000

Carbon monoxide tolerance Yes Yes Yes

Hydrogen Purity (%) 99.5 99.99 >99.99Hydrogen Purity (%) 99.5 99.99 99.99Stability/Durability (years) 3 >5 0.9Permeate Pressure (psi) N/A N/A 400

October 8, 2008

Future Work

• Design, build & operate 220 lb/day PDU

• Continue work with commercial suppliers on manufacturing of full-size alloy membranesg y

• Life testing

• Understand impacts of contaminants

• Improve techno-economic models

October 8, 2008

Summary

• Results demonstrate that technology is on track gyto meet DOE targets– Technical

E i– Economics• Tools are in place

Experimental– Experimental– Modeling at all scales

• Flexibility in process design, includingy p g , g– Staged hydrogen recovery for polygen cases– Integrated water gas shift membrane reactors

October 8, 2008

Acknowledgements

Work funded under DOE DE-FC26-05NT42469

Process economics and engineering results supported byPraxairNoram

THANK YOU

CONTACTDamon WatersBusiness Development Manager

THANK YOU

Business Development Manager303.530.0263 x119dwaters@eltronresearch.com

October 8, 2008