NRG FACT SHEET
CO2 Capture Technology/KM CDR Process®
Background
Flue gas CO2 capture technology
separates CO2 from large CO2 emission
sources derived from combusting coal,
natural gas or oil fuel. In the case of coalfired power plants as shown in Figure 1,
flue gas CO2 capture technology is applied
downstream of the existing emissions
control systems.
CO2
Capture
Boiler
SCR
FGD
BH
Coal
Air
Selective
Catalytic
Reduction
Power Station
Steam Turbine
Clean
Environment
CO2 Capture
Plant
CO2
Compression
NOx
Captured CO2 is compressed and then
used in enhanced oil recovery (EOR)
where the CO2 will remain sequestered
in the underground rock formations.
Flue Gas
Desulfurization
Bag House
Ash
SOx
CO2
EOR
Enhanced
Oil Recovery
CCS
Carbon Capture
& Storage
Figure 1: Coal-fired Power Plant – System Composition
Technology Overview
The MHI flue gas CO2 capture process, so called “KM CDR Process®” (Kansai Mitsubishi Carbon Dioxide Recovery
Process) can be applied to either existing or new power plants. This technology has been co-developed by MHI
and Kansai Electric Power Company (KEPCO) since 1990.
90% of CO2 is recovered from the flue
gas by contacting with KS-1TM solvent
Treated
Flue Gas
CO2 Compressor
The flue gas is cooled
to a process desired
temperature.
Compressed
CO2
Absorber
Regenerator
C.W.
4,776 mtpd
(metric ton per day)
(equal to 5,265 short
ton per day)
C.W.
(Cooling
Water)
MHI Energy
Saving System
CO2 is stripped from
KS-1TM solvent in
the Regenerator
Flue Gas
Quencher
Flue Gas
C.W.
Steam
The process is built on proven, advanced
flue gas CO2 capture technologies
with specific application for fossil fuel
power generation facilities. It utilizes the
proprietary KS-1 trademark solvent that
has improved absorption and regeneration
properties while also lowering
corrosiveness and degradation features,
compared with normal amine applications.
These aspects contribute to lower energy
requirements, solvent consumption and
emissions of waste products.
MHI is a world-leading flue gas CO2
capture technology supplier and is
strategically positioned to provide the
most technically proven, environmentally
friendly and economically robust CO2
capture process.
FOR MORE INFORMATION, CONTACT:
David Knox
NRG Energy
1000 Main, Houston, Texas 77002
Office: 832.357.5730
david.knox@nrgenergy.com
NRG FACT SHEET
KM CDR Process :
• World’s largest operating flue gas CO2 capture plant – eleven operating plants for various flue gas sources
including the largest post combustion CO2 capture plants in the world (as of June, 2014)
• World’s most energy efficient process with KS-1 solvent – leading to reduced costs
• World’s most advanced and comprehensive industrial R&D programs for more than 20 years – deployment of
multiple R&D pilot plants and research facilities led to significant process and technology improvements
• More than 207 patents pertaining to the KM CDR Process® all over the world (as of June, 2014)
• Widespread commercial experience with large scale various Air Quality Control Systems (AQCS) equipment
®
Experiences
The experience gained from the deployment of eleven operating plants has been invaluable in
strengthening operation and reliability in CO2 capture plants. Eleven major MHI CO2 capture plants
are currently under operation as shown in Figure 3.
3
8
CO2 Recovery (CDR) Plant –
IFFCO AonlaUnit (India)
1999
200 t/d Malaysia
2005
330 t/d Japan
2006
450 t/d India
CO2 Recovery (CDR) Plant –
IFFCO Phulpur Unit (India)
11
2006 India (Aonla)
450 Mt/d
2009
450 t/d Bahrain
2010
400 t/d UAE
2
2005 Japan
330 Mt/d
2011 U.S.A(SOCO)
500 t/d
2006
450 t/d India
2010
240 t/d Vietnam
2006 India (Phulpur)
450 Mt/d
2011 Pakistan
340 Mt/d
12
2014 Qatar
500 Mt/d
7
2009 Bahrain
450 Mt/d
10
2012 India (Vijaipur)
450 Mt/d
9
KEY
2009
450 t/d India
4
6
Plants under operation
Plants under construction
2010 UAE
400 Mt/d
1
5
2010 Vietnam
240 Mt/d
1999 Malaysia
210 Mt/d
2009 India (Kakinada)
450 Mt/d
Figure 3: MHI CO2 capture plant - Worldwide experience
2011
340 t/d Pakistan
2012
450 t/d India
2011
500 t/d USA
2014
500 t/d Qatar
Technology Demonstration
Coal-fired power plants are the largest producer
of CO2 emissions. The 500 mtpd (metric ton per
day) CO2 capture and sequestration project at Plant
Barry in Alabama is currently the world’ s largest
start-to-finish carbon capture and storage project
from coal fired flue gas. The CO2 produced from
the capture plant is transported via a pipeline and
sequestered at the Citronelle oil field.
The capture plant began successful operation on
June 2, 2011 and achieved a 100,000 ton of CO2
injection until October, 2013.
(Remark) KM CDR Process is a registered trademark of Mitsubishi Heavy
Industries, Ltd., in Japan, the United States of America, European Union (CTM),
Norway, Australia, and China.
NRG is a registered servicemark of NRG Energy, Inc. The plus signs and plus clusters are servicemarks of NRG Energy, Inc. © 2014 NRG Energy, Inc. All rights reserved.
Figure 4: The 500 mtpd CO2 capture plant at Plant Barry / Overview