Commercialisation of CCS on CCGT Power PlantsAutors: Matthew Hunt – CCS Sales Manager

Pramurtta Majumdar – Specialist Turbine Engineer

Disclaimer The contents in this presentation are for information purposes only and are not intended to be used or relied upon by the reader and are provided on the condition that you 'use it at your own risk'. Doosan Power Systems Limited does not accept any responsibility for any consequences of the use of such information.All rights are reserved and you may not disseminate, quote or copy this presentation—written by Doosan Power Systems Limited—without its written consent.© Doosan Power Systems Limited 201

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Doosan Power Systems – Vision

“To be a global leader indelivering advanced cleanenergy technologies, products and services.”

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$15 Billion

Part of the Doosan Group

Doosan Heavy Industries & Construction

Doosan Group

Casting and Forging Nuclear Doosan Power

Systems Power Plant Construction Desalination

Doosan Group

Doosan Heavy Industries& Construction

Doosan Power Systems

Turnover Employees

*Figures exclusive of DPS data and correct to the end of the financial year for 2009.

$1.3 Billion

$5 Billion*

36,400

6,000

5,800*

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Doosan Power Systems – Organisation

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Doosan GroupDoosan Heavy Industries & Construction

Doosan Power Systems

Plant WindBoilersDoosan Babcock

Turbines Škoda Power

ServicesDoosan Babcock

Post Combustion CaptureLeading Edge Technology

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Doosan Power Systems – HTC Purenergy

Global licence agreement signed in 2008 between Doosan Power Systems and HTC Purenergy.

HTC if the CO2 Capture Technology licensee of the University of Regina who have been working on carbon capture since 1987.

Technology transfer – up to 30 engineers and specialists from Doosan Power Systems seconded to Regina, Saskatchewan.

Doosan and HTC participate in collaborative research with the University of Regina – which has some of the most comprehensive carbon capture research and development facilities in the world

This enables the latest technological advancements to be provided to our Customers.

An Alliance…

To be recognised as the market leader in Post Combustion Carbon Capture technology and application, with proven product leadership to support the Core Power Island EPC product offering throughout the Doosan organisation.

Our Goal…

Future Development…

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Technology Leaders Advanced Solvent designer (RS family) solvent

providing:– Low cost commercially available ingredients – High efficiency system – Low degradation rates– Tailored to meet operating and flue gas conditions

Scale-up validated against actual operating data from several plants as large as 800 TPD (with +/- 3% accuracy)

Most importantly, scale-up is only achievable through a complete and thorough understanding of:– All physical and chemical properties (kinetics,

diffusivity, etc.)– Operating conditions– Proper application of numeric modeling tools

Patents in place for high efficiency configured to advanced solvent

Patents in place for steam side plant integration

Advanced solvent, advanced process and optimised integration provide maximum customer value 6

Optimised Process Design

Heat Integration

Reduction in Steam

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POST COMBUSTION CARBON CAPTURE TECHNOLOGY

© Doosan Power Systems

Coal CCGT

12%-14% CO2 concentration ≈ 4% CO2 concentration

High SOx levels Low SOx levels

Low O2 levels High O2 levels

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PCCC for Gas Turbine PlantsA top-level assessment of TECHNICAL interface issues pertaining to the operation of gas turbine plants either in simple cycle or in combined cycle mode affecting the post combustion carbon capture (PCCC) process are considered:

Primary Features of Gas Turbine Plants influencing PCCC

Compatibility with diverse fuel compositions

Pressure AND temperature variation

Carbon capture during start-up transients

Power vs. Steam Maps

Steam availability for regeneration

Variability of Steam properties

HRSG process for compatibility with PCCC

HRSG layout for compatibility with PCCC

Retrofitting existing CCGT plants with PCCC would be based on design considerations outline above

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Primary Features of Gas Turbine Plants influencing PCCC Gas Turbine Plants can operate on simple cycle

(incomplete Brayton cycle) or combined cycle (bottoming cycle to Brayton cycle) for highest efficiency and power output.

Capability of operation with a wide variety of fuels with varying carbon contents, including bio-diesel.

Primarily operated as Peak Load plants, with rapid response to transients as in merchant plants.

Combined cycle operation with HRSG’s with triple pressure reheat steam.

Supplementary firing in HRSG’s.

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PCCC for GT Plants- compatibility with diverse fuel compositions

PCCC for Gas Turbine Plants would have to consider the variety of fuel sources available at a particular site at different times.

The compatibility of the absorber for carbon dioxide (amine based for Doosan) would have to be evaluated with all the chemical properties of the fuel sources.

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PCCC for GT Plants- exit pressure AND temperature variation

Stripper

Compressor

Direct Contact Cooler for Flue Gas

Absorber

GT Plants are operated both in simple cycle and combined cycle with HRSG.

The flue gas exit pressure at DCC inlet would vary with HRSG pressure drop similar to load following on a coal fired plant..

The placement of a blower (in series) to counteract PCCC pressure drop would effect GT exit pressure and/or HRSG heat transfer regimes. Therefore the ΔP would be part of the design of the absorber.

Inlet temperatures to PCCC would be affected by supplementary firing in HRSG.The DCC is designed to accommodate this.

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PCCC for GT Plants- carbon capture during start-up transients

Gas Turbine Plants are subjected to frequent starts and stops as Peak Load Plants.

Frequent starts and stops significantly increase CO emissions (to several multiples of normal operation values)

Lack of Steam during open cycle start-up makes solvent regeneration for PCCC very difficult. Either a aux boiler required or a simple bypass depending on client.

Response time for PCCC plant (with chemical kinetics) to start-up requirements of simple cycle and/or combined cycle are and process designed accordingly.

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PCCC for GT Plants- Power vs. Steam Maps Power vs. Steam Maps for predicting power and steam export needs with or without SF are vital for

evaluating operational flexibility to encompass carbon capture regimes.

Gro

ss P

ower

Out

put (

MW

)

Steam Export (t/h)

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PCCC for GT Plants- Steam availability for regeneration Triple pressure HRSG (w or w/o supplementary firing) for three steam injection points are widely used. Doosan patent on Steam Extraction and Return pending.

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PCCC for Gas Turbine Plants- variability of Steam properties Steam properties for regeneration are widely variable for the third pressure HRSG tap-off.

Typical variability of properties within Single Pressure HRSG’s are illustrated below.

Regeneration of Lean Solvent in Re-Boiler accommodates this wide variety of design conditions prevalent in a triple pressure HRSG.

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PCCC for Gas Turbine Plants- HRSG process for compatibility with PCCC

Additional steam requirement for PCCC can be most easily incorporated with an external deaerator.

This provides robust operational flexibility together with simpler phosphate dosing for Flow Assisted Corrosion (FAC) rather than the inherently more complicated All Volatile Treatment (AVT) regime.

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PCCC for Gas Turbine Plants- HRSG layout for compatibility with PCCC

Horizontal HRSG’s (shown on right) are more suitable for integration with PCCC plants than vertical HRSG’s (shown above) due to low level tie-in’s

Vertical arrangement can create additional pressure drop issues

Additional plot space required for PCC plant

Planning consent for additional plant if retrofitted

Doosan Product Development and Commercialisation

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Doosan Power Systems Post Combustion Capture Projects

Development Roadmap

Emissions Reduction Test Facilities 1t/d to 5t/d CO2

Target Slipstream

100t/d CO2 ≈ 5MWe

Ferrybridge

Large Demonstration Project (s) Slipstream

~3000t/d CO2 ≈ 150MWe

CommercialisationFull Scale Plant

10,000t/d CO2 ≈ 500MWe

15,000 t/d CO2 ≈ 800 MWe

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Test Facilities and Demonstration ProjectsFacilities & Technology create a winning edge

Performance demonstrated on wide range of fuels and different plant configurations20

20+

Year

s of

Dem

oIn

dust

ry L

eadi

ng S

cale ERTF, 1t/day

Commissioned in 2010

Ability to test using wide range of fuels including natural gas

High degree of flexibility and accuracy to test wide range of Solvents and other modifications

Ferrybridge, 100 t/day Largest PCC demonstration plant in

the UK

Long-term testing and validation of process and solvent performance

Evaluate transient conditions and process control

Extensive monitoring planned

Boundary Dam, 4t/day Commissioned in 1987

Dedicated to post-combustion capture since 2000

Captures CO2 from flue gas emitted from lignite-fired boiler

Upgraded in 2007 to evaluate advanced process with RS-2

ITC 1t/day Opened in 2003

Flue gas from natural gas combustion

Includes equipment to study corrosion, material selection, solvent degradation and kinetics

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Demonstration Projects – Emissions Reduction Test FacilityEmissions Reduction Test Facility (ERTF) Upgrade for PCC Solvent Scrubbing – A 160kWt combustion test facility at our R&D Centre in Renfrew, United Kingdom

Capable of firing a very wide range of coals or natural gas.

Originally constructed to test primary NOx reduction measures, subsequently adapted and upgraded to test secondary NOx reduction measures.

Upgraded for oxyfuel operation as part of the OxyCoal-UK: Phase 1 project – a collaborative project sponsored by the UK government with industrial and academic participation.

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Demonstration Projects – Emissions Reduction Test FacilityERTF Solvent Scrubbing Process - Equipment

Absorber column 10” NB (DN250) 4-off packed bed sections (with multiple

solvent feed inlet points)

Stripper column 8” NB (DN200) 4-off packed bed sections

Water Wash Column 8” NB (DN200) 1-off packed bed section

Heat exchangers Gasketed (plate and frame)

Pumps Duties met by triplex diaphragm pumps

for high head – low flow duties Variable speed drives for efficiency and

ease of control

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Boundary Dam Demonstration Plant

Technology Demonstration Plant Operating since 1987

Donated to UoR in 2000

Upgraded 2007

BDPS CO2 Capture Plant Performance

Capture capabilities are 4 TPD

Operating on lignite fuel or simulated natural gas

Technology demonstration facility for client-specific parameters

< 1.1kg steam/ 1 kg CO2captured which equates to less then 2.4 GJ/Ton CO2 Total Capture System equates to ~110 MWe on an 800MWe

Minimised impact to existing plant performance – Industry leading plant efficiency23

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Demonstration Projects – CCPilot100+SSE Ferrybridge CCPilot100+ 100t/day CO2 PCC Demonstration Plant

Post Combustion Capture Demonstration Plant using Doosan Power System’s technology

100 t/day slip stream on SSE’s Ferrybridge Power Station– Largest PCC Demonstration in the UK

Funding by the project partners, Scottish & Southern Energy, Vattenfall, Doosan Power Systems, TSB, DECC and The Northern Way.

Fast – track, for operation during 2011

Two year test programme

Lessons learned will be incorporated into future designs

Off gas analysis – amine carryover and degradation products

On-site amine and degradation product atmospheric sampling and analysis

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CCPilot100+ Project Location

Pictures courtesy Google Earth

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CCPilot100+ Process Layout and Key Parameters

1.1 x 30.5Stripper Column Dimensions (i.dia x height; m)

2.3 x 39CO2 Absorber Dimensions (i.dia x height; m)

90%Design CO2 removal efficiency

100 metric tpdPCC Design

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CCPilot100+ Project Execution

Current Status – In Construction

Testing Programme

P&IDs

Stripper Column Delivery

Absorber Fabrication

3D Modelling

Construction

Simulation

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In Summary

Doosan utilises process technology that was invented and developed in Canada by UoR and HTC Purenergy which has been in operation for over 20 years.

Doosan and HTC are at the forefront of PCC technology development providing solutions for both coal and gas fired power plants.

Doosan has a proven highly efficient process and product which it will guarantee (performance and commercial)

Doosan will undertake full EPC

Doosan have available resources and can leverage the historic experience from recent projects to achieve clients goals

Low impact, high efficiency, integrated EPC Carbon Capture Solutions 28

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