1. Carbon Capture and Storage
Legal Framework Development and Supply Chain Perspectives, 18 OCT 2011, Rome
Current Status of Amine-based CO2
Capture Technology in KEPCO
18, OCT 2011
Ji-Hyun Lee, No Sang Kwak, Kyung-Ryong Jang,
In-Young Lee and Jae Goo Shim
KEPCO Research Institute
중온용 건식 재생 CO2 흡수제 개발

2. Outline
KEPCO Overview
Policy and target of CCS in KEPCO
Project Overview
Test Results of Lab & 0.1MW Test Bed
Plan for Construction of 10MW Pilot Plant
Conclusion and Future Works
2/19 WEC-Italy, Rome, 2011

3. KEPCO Overview
Budget : 54.5 trillion won ( as of ‘11)
Personnel : 19,472 ( 36, 352 including Genco’s staffs, as of the end of ‘10)
KEPCO Group
3/19 WEC-Italy, Rome, 2011

4. Policy and Target of CCS in KEPCO
CCS-related policy in Korea & KEPCO
- Power industry must take responsibility and take the lead for introducing CO2 free technology
- Commitment of the 30% GHG reduction below BAU by 2020
- Demonstration & deployment of CCS technology in 2020
Major Area of KEPCO’s CCS R&D
CO2 Capture Technology
Post Combustion Oxy Fuel Combustion Pre Combustion
Wet Scrubbing Oxy Combustion Dry Sorbent
Process Process for IGCC
Dry Sorbent Chemical Looping
Process Combustion
4/19 WEC-Italy, Rome, 2011

5. Post-Combustion CO2 Capture Technology
Wet Scrubbing CO2 Capture process Criteria for Solvent Selection
Higher
Higher
adsorption
capacity
/desorption rates
Lower
energy Highly
for Efficient Less
regener Absorbent degradation
ation
Lower Lower
volatility corrosivity
50~90% of total energy
required
5/19 WEC-Italy, Rome, 2011

6. Project Overview
A-COS Project (Development of an Advanced CO2 Capture System)
Project Leader: KEPCO (12 participants)
Research Periods: NOV, 2008 ~ OCT, 2014 (6 Years)
Financially supported by the Korean government & participating companies
Target :
- Develop post-combustion CO2 separation technology by amine solvent
at coal-fired power station
- Develop new solvent with improved regeneration energy compared
to MEA (Reduce regeneration energy above 30% than MEA)
- Process design, construction & optimization
(0.1MW CO2 capture plant (2010), 10MW Pilot plant until 2013)
6/19 WEC-Italy, Rome, 2011

7. Strategy
1st Stage : `2008~11 2nd Stage : `2012~14 3rd Stage : `2015~20
Capture < 3.2 GJ/tonCO2 2.5~3.0 GJ/tonCO2 < 2.5 GJ/tonCO2
Energy
Test bed
S
0.1MW
T Test Bed
R • Develop advanced absorbent
• Reduce regeneration energy Pilot Plant
A
10MW
T Pilot Plant
E • Search innovative absorbent
G • Process innovation
Demonstration
Y
500 MW
Goal Development of an Advanced CO2 Capture System
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8. Development Procedures
Fast Screening V-L Equilibrium Degradation Corrosion
CFD & Molecular Bench unit Test bed (0.1 MW) Economic Evaluation
simulation
8/19 WEC-Italy, Rome, 2011

9. Test results : Regeneration Energy
BSU (Bench Scale Unit) CO2 Regeneration Energy
Regeneration Energy (GJ/ton CO2)
5.0
30% 35%
4.5
4.0
3.5
3.0
2.5 3.9
2.0
2.8 2.6
1.5
1.0
0.5
0.0
MEA 30wt% KoSol-3 KoSol-4-1
 Experimental Condition
 CO2 concentration : 11~15%
 Gas volume : 2~10Nm3/hr
The regeneration energy of KoSol*-series is
 Packing: Random packing 30~35% lower than that of MEA
* KoSol : Korea Solvent
9/19 WEC-Italy, Rome, 2011

10. Test results : Degradation & Corrosion
Degradation apparatus Experimental Condition Optical analysis of test coupon
Oxidative Degradation
- O2 : 98%
- CO2 : 2%
- Temperature : 60℃
- Reaction time: 1,400 hr
Test coupon : carbon steel at 120℃ for 48hrs
90% 55%
100 60 93%
Relative Degradation
Corrosion Rate(mpy)
80
60 100
40 60
40
9 20
10 27
20 4
0 0
MEA 30wt% KoSol-3 KoSol-4-1 MEA 30wt% KoSol-3 KoSol-4-1
• KoSol-Series are 90% lower than MEA • KoSol-Series are 55~93% lower than MEA
10/19 WEC-Italy, Rome, 2011

11. Test results : 0.1MW Test bed
0.1MW Test Bed
Location: Boryung power Plant, Korea
Capacity: Flue gas 350 m3/hr
CO2 Recovery 2 Ton/day(0.1MW)
Start Up: OCT. 2010
Source Gas: CO2 14%, O2 5%, SO2 25ppm
Solvent: KoSol-series, MEA
11/19 WEC-Italy, Rome, 2011

12. Test results : 0.1MW Test bed
Test Schedule
~Jan, 23rd KoSol-3 campaign (1st,68days)
Jan, 23rd~28th washing/ solvent change
March, 1st ~ 21st MEA campaign (1st, 20 days)
March, 22rd ~24th washing/ solvent change
Long run operation(KoSol-3, 1,000 hours, 43
April,2nd ~ May,14th
days)
Test & Analysis
Key variable DOE Analysis Optimal Condition
－Statistical analysis
－Simulation
12/19 WEC-Italy, Rome, 2011

13. Test results : 0.1MW Test bed/long-term test
KoSol-3 Long-term test results (1,000hrs: from April 2~ May 14, 2011)
3.0 20
100
Steam Consumption(kg/hr)
2.5
Captured CO2(ton/day)
CO2 Capture Ratio(%)
18
80
2.0
16
60
1.5
14
40
1.0
CO2 Capture Ratio(%)
Conversion(%)
20 CO2 Capture(TPD) 12
0.5
Steam Consumption(kg/hr)
0 0.0 10
0 200 400 600 800 1000
Operation Time(hr)
· CO2 capture ratio : 90.6% (average)
· Captured CO2 : 2 ton-CO2/day
· Regeneration energy : 3.0~3.2 GJ/ton-CO2
· No degradation during the long term test
13/19 WEC-Italy, Rome, 2011

14. Test results : 0.1MW Test bed/corrosion
Corrosion Probe point
P-3
- Corrosion points : 8 points P-7
- Corrosion probe: carbon steel P-1 P-6
P-4
P-2 P-8
P-5
Corrosion Rate
Corrosion Rate(mpy)
KoSol-3
- Stripper(P-4) is the most corrosive MEA
point in the process
- Kosol-3 corrosion is 70% lower than
that of MEA in Test Bed
P-1 P-2 P-3 P-4 P-5 P-6 P-7 P-8
14/19 WEC-Italy, Rome, 2011

15. 10MW Pilot Plant Construction
• Objectives : Demonstrate the performance of the KoSol solvent and the Process
• Treated gas rate : 35,000Nm3/hr (200 t-CO2/day)
• Source Gas : flue gas of coal fired boiler(CO2: 14%, O2: 5%, SO2: 25ppm)
• Basic Design was completed
0.1MW Test bed Basic Design
• Detail Design :
~ Feb 2012
Process Simulation • Plant Construction :
~ May 2012 ~ May 2013
15/19 WEC-Italy, Rome, 2011

16. Location of 10MW Pilot Plant
Boryong Power plant ( 8×500MW plants, Bituminous coal)
Boryong
Power Plant
Seoul
10MW CO2 Capture Plant Site
Boryong Power Plant(#8)
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17. Conclusion & Future Works
Conclusion
• Development of advanced amine solvent (KoSol-3) for CO2 capture
- Decreased regeneration energy
▶ BSU: 2,8 GJ/ton CO2, Test Bed : 3.0~3.2 GJ/ton CO2
- Less corrosive than MEA
- Less degradative than MEA
• Construct 0.1MW Test Bed and 3,000hr trouble free operation
Future works
• Process optimization (0.1MW)
- Appling absorber inter-cooling system and advanced reclaimer
• 10MW Pilot plant construction by May 2013
• New Generation Technologies
▶ Development of self-concentrated CO2 capture system for reducing
regeneration energy consumption
17/19 WEC-Italy, Rome, 2011

18. Thank you for your attention !
Ji-Hyun Lee
Senior Researcher, KEPCO Research Institute, South Korea
18/19
E: leejha@kepri.re.kr / T: +82 42 865 5258
WEC-Italy, Rome, 2011