중온용 건식 재생 CO2 흡수제 개발

Ji-Hyun Lee, No Sang Kwak, Kyung-Ryong Jang, In-Young Lee and Jae Goo Shim

KEPCO Research Institute

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

WEC-Italy, Rome, 20112/19

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

WEC-Italy, Rome, 20113/19

KEPCO Overview

KEPCO Group

Budget : 54.5 trillion won ( as of ‘11)

Personnel : 19,472 ( 36, 352 including Genco’s staffs, as of the end of ‘10)

WEC-Italy, Rome, 20114/19

Policy and Target of CCS in KEPCO

CCS-related policy in Korea & KEPCO

Major Area of KEPCO’s CCS R&D

- 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

CO2 Capture Technology

Post Combustion Oxy Fuel Combustion Pre Combustion

Dry SorbentProcess for IGCC

Dry SorbentProcess

Wet ScrubbingProcess

Chemical LoopingCombustion

Oxy Combustion

WEC-Italy, Rome, 20115/19

Post-Combustion CO2 Capture Technology

Lower energy for re-gen-era-tion

Higher capac-

ity

Less degradation

Lowervolatility

HighlyEfficient

Absorbent

Higher adsorption/desorption

rates

Lowercorrosivity

50~90% of total energy required

Wet Scrubbing CO2 Capture process Criteria for Solvent Selection

WEC-Italy, Rome, 20116/19

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)

WEC-Italy, Rome, 20117/19

Strategy

STRATEGY

1st Stage : `2008~11 2nd Stage : `2012~14 3rd Stage : `2015~20

Test bed

0.1MW Test Bed

Pilot Plant

10MWPilot Plant

Demonstration

500 MW

Capture Energy

Goal Development of an Advanced CO2 Capture System

• Develop advanced absorbent• Reduce regeneration energy

< 3.2 GJ/tonCO2 2.5~3.0 GJ/tonCO2

• Search innovative absorbent• Process innovation

< 2.5 GJ/tonCO2

WEC-Italy, Rome, 20118/19

Development Procedures

Fast Screening

Bench unit Test bed (0.1 MW)

V-L Equilibrium Degradation Corrosion

CFD & Molecular simulation

Economic Evaluation

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MEA 30wt% KoSol-3 KoSol-4-10.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

3.9

2.8 2.6R

eg

en

era

tion

En

erg

y (

GJ/

ton

CO

2)

The regeneration energy of KoSol*-series is 30~35% lower than that of MEA

30% 35%

* KoSol : Korea Solvent

Experimental Condition CO2 concentration : 11~15% Gas volume : 2~10Nm3/hr Packing: Random packing

Test results : Regeneration Energy

BSU (Bench Scale Unit) CO2 Regeneration Energy

WEC-Italy, Rome, 201110/19

Test results : Degradation & Corrosion

• KoSol-Series are 55~93% lower than MEA

Experimental Condition

Oxidative Degradation- O2 : 98%- CO2 : 2%- Temperature : 60℃- Reaction time: 1,400 hr

MEA 30wt% KoSol-3 KoSol-4-10

10

20

30

40

50

60

70

80

90

100

100

10 9

• KoSol-Series are 90% lower than MEA

Rel

ativ

e D

egra

dat

ion

90%

MEA 30wt%

KoSol-3 KoSol-4-10

10

20

30

40

50

60

60

27 4

55% 93%

Co

rro

sio

n R

ate(

mp

y)

Optical analysis of test coupon

Test coupon : carbon steel at 120 for 48hrs℃

Degradation apparatus

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Test results : 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

0.1MW Test Bed

WEC-Italy, Rome, 201112/19

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

April,2nd ~ May,14th Long run operation(KoSol-3, 1,000 hours, 43 days)

Test & Analysis

DOE Key variable Analysis Optimal Condition

－ Simulation

－ Statistical analysis

Test results : 0.1MW Test bed

WEC-Italy, Rome, 201113/19

· 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

Operation Time(hr)

0 200 400 600 800 1000

CO

2 C

aptu

re R

atio

(%)

0

20

40

60

80

100

Cap

ture

d C

O 2(to

n/d

ay)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Ste

am C

on

sum

pti

on(k

g/h

r)

10

12

14

16

18

20

Conversion(%) CO2 Capture(TPD)

Steam Consumption(kg/hr)

Test results : 0.1MW Test bed/long-term test

KoSol-3 Long-term test results (1,000hrs: from April 2~ May 14, 2011)

CO2 Capture Ratio(%)

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Test results : 0.1MW Test bed/corrosion

- Corrosion points : 8 points

- Corrosion probe: carbon steel P-1

P-2

P-3

P-4

P-5

P-6

P-7

P-8

Co

rro

sio

n R

ate(

mp

y)

P-1 P-2 P-3 P-4 P-6 P-7 P-8P-5

KoSol-3MEA

Corrosion Rate

Corrosion Probe point

- Stripper(P-4) is the most corrosive

point in the process

- Kosol-3 corrosion is 70% lower than

that of MEA in Test Bed

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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

• Detail Design :

~ Feb 2012• Plant Construction :

~ May 2012 ~ May 2013

0.1MW Test bed

Process Simulation

Basic Design

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Location of 10MW Pilot Plant

10MW CO2 Capture Plant SiteBoryong Power Plant(#8)

Seoul

BoryongPower Plant

Boryong Power plant ( 8×500MW plants, Bituminous coal)

WEC-Italy, Rome, 201117/19

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

WEC-Italy, Rome, 201118/19

Ji-Hyun Lee

Senior Researcher, KEPCO Research Institute, South KoreaE: leejha@kepri.re.kr / T: +82 42 865 5258

Thank you for your attention !