xu shisen technology development center of chng 23th may 2007 · high energy penalty and simple...
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GreenGen --- Near Zero Emission Coal Based Power
Generation Project in China
Xu Shisen
Thermal Power Research Institute Technology Development Center of CHNG
23th May 2007
TPRI
ContentsContents
Why does Why does China need need GreenGen ?
Roadmap of GreenGen Program
Demonstration Project
R&D on Key Technologies
Summary
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Why coal ?Why coal ?
NG Coal
80 60 100CO2 emission
85:15 75:25 95:5C : H(wt.%)
40 60 230Year
300
200
100
0
Oil
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Why Coal?Why Coal?
Thermal
Hydro
Renewable Nuclear
Structure of Structure of ChinaChina’’s Electric s Electric PowerPower
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77.8%
20.7%
1.1% 0.4%
2006
中国历年发电装机增长情况
6913 7236 7644 8012 8705 9382 1009011550 12664 13789
1514716653
1829119989
2172223654
2542427729
2987731932
3384935657
39141
44239
51718
62200
0
10000
20000
30000
40000
50000
60000
70000
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
（年）
（万
千瓦
）
China’s electric power development
CHNG’s electric power development
CoalCoal’’s problems problem
How to increase efficiency?How to reduce emissions?
Average Coal Consumption Ratio (by end of 2006)China:366g/kWhWorld:320 g/kWh
Emission of thermal power technologiesEmission of thermal power technologies
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0102030405060708090
NGCC 525MW
($3.50=$3.3$/GJ NG)
NGCC 525MW
($5/MBtu=$4.7/GJ NG)
IGCC 520MW
USC PC 600MW
COE $MWh with Capture& Sequestration
COE $/MWh with CO2Capture
COE $/MWh w/outCapture
NGCC = Natural Gas Combined Cycle
IGCC = Integrated Gasification Combined Cycle
USC PC – Hi-efficiency Pulverized coal
COE with CO2 capture and sequestrationTPRI
CCT in the futureCCT in the future
SC/USC + FGD + SCR (SC/USC + FGD + SCR (deep clean, COdeep clean, CO2))
-------- for near futurefor near future
CFBC (CFBC (capacity, efficiency, deep clean, COcapacity, efficiency, deep clean, CO2))
-------- to complement USCto complement USC
PFBCPFBC（（deep clean, technical barrier, COdeep clean, technical barrier, CO2))
IGCC ( IGCC ( reduce cost, COreduce cost, CO2 ))
-------- for medium futurefor medium future
GreenGen (high efficiency, near zero emission and HGreenGen (high efficiency, near zero emission and H2
production )) -------- for long term futurefor long term future
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R&DD on the integrated coal gasification, hydrogen R&DD on the integrated coal gasification, hydrogen production, power generation and COproduction, power generation and CO22 sequestration systemsequestration system
To achieve high coalTo achieve high coal--based generation efficiency and near based generation efficiency and near zero emission of all pollutant including COzero emission of all pollutant including CO22
To verify key technologies, sustain technologies and system To verify key technologies, sustain technologies and system integration technology and create integration technology and create ““GreenGenGreenGen”” technology with technology with full Chinese intellectual property rightfull Chinese intellectual property right
To conduct commercial demonstration at acceptable price and To conduct commercial demonstration at acceptable price and realize sustainable development of coalrealize sustainable development of coal--based generationbased generation
The Objects of GreenGen
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2005 2010 2015 2020 2025
●1000-2000t/d gasifier
●system integration
●250MW IGCC
● 100~200kW MCFC and 50kWSOFC
● H2 production and CO2 separation at pilot scale
●3000t/d gasifier
●300~400MW IGCC
● MW MCFC and 200kWSOFC● H2 production and CO2 separation at 100MW class
●3000t/d gasifier
●300~400MW GreenGen demonstration
with10~50 MW MCFC and SOFC, H2 production ,
CO2 separation and near zero emission
First Step
Second Step
ThirdStep
R&DD Deployment
Roadmap of GreenGen Program
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Air Air Separation Nitrogen
Oxygen
Coal
Water or Steam
Gasification
Marketable
Ash and Slag
Water
Gas
PurificationSulfur
Recovery
Marketable Sulfur
Syngas Shift
Air Gas Turbine
Steam
Turbine
Power
PowerFuel Cell
Clean
Gas
Industrial U
tilization
Unm
ineableCoal
Beds
Embedded in
Deep Sea
H2 &
CO
2Separation
H2
Separation
H2
CO2R
ich H
ydrogen
The final flow sheet of GreenGenThe final flow sheet of GreenGenTPRI
(Only first step)
To To complete industrial demonstration project of 400MW before 2020complete industrial demonstration project of 400MW before 2020
Generation efficiency up to 55%Generation efficiency up to 55%--60%60%
SOSO2 2 and NOx emission less than 20mg/Nmand NOx emission less than 20mg/Nm33
PM2.5, Hg and VOC near zero dischargePM2.5, Hg and VOC near zero discharge
Over 80% of COOver 80% of CO22 separated and treatedseparated and treated
Byproducts effectively utilizedByproducts effectively utilized
Acceptable costAcceptable cost
Technological goals of GreenGenTechnological goals of GreenGen
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The Flow Sheet of GreenGen Stage 1 TPRI
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First stage objectsFirst stage objects
250MW250MWEff.(net): >42%(LHV) Eff.(net): >42%(LHV) De SOx eff. : >98% De SOx eff. : >98% NOx: <80mg/NmNOx: <80mg/Nm33(16%@ O(16%@ O22))Operation in 2009Operation in 2009<2000mRMB<2000mRMB
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Key technologiesKey technologies
Gasifier: TPRIGasifier: TPRI--2000T/D2000T/DE E -- Gas turbine :Gas turbine :
Nanjing+ GE TurbineNanjing+ GE TurbineShanghai Electric Group+ SIMENSShanghai Electric Group+ SIMENSDong Fang Electric + MHIDong Fang Electric + MHI
ASU, HRSG, ST,etc.: Domestic ManufactureASU, HRSG, ST,etc.: Domestic ManufactureDesign: Domestic Design: Domestic
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GreenGen Lab.GreenGen Lab.
•CO2 capture and sequestration:
•A 10,000 Nm3/h PSA CO2 captureexperimental setup
•A 150 Nm3/h CO2 membrane separation capture experimental setup
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250MW IGCC Power Plant in Tianjin 250MW IGCC Power Plant in Tianjin TPRI
CHNG approved “The Program of GreenGen ” in 2004.
The feasibility study of the first step demonstration project has
been finished in Sept. 2006, and will be started to construct in
2007 and put into operation in 2009.
CHNG prepares to set up GreenGen Industrial Alliance, and
welcome the energy companies in the world to participate in
GreenGen.
The membership agreement was singed between CHNG and the
FutureGen Industrial Alliance on 27 Oct. 2005.
Implementation of GreenGen
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Vice-Premiere Zeng Peiyan meeting stakeholders
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GreenGen Ltd., Co. GreenGen Ltd., Co.
GreenGen Ltd., Co. founder agreement signing ceremonyGreenGen manifested the responsibility of state-owned energy giants in
addressing energy utilization and environmental issues.
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China Huaneng Group, Holding Company, China Huaneng Group, Holding Company,
financial contribution 51%financial contribution 51%
China Datang Group 7%China Datang Group 7%
China Huadian Corporation 7%China Huadian Corporation 7%
China Guodian Corporation 7%China Guodian Corporation 7%
China Power Investment Corporation 7%China Power Investment Corporation 7%
Shenhua Group 7%Shenhua Group 7%
State Development & Investment Co. 7%State Development & Investment Co. 7%
China Coal Group 7%China Coal Group 7%
GreenGen Ltd., Co.TPRI
CHNG participated in US “FutureGen” project on Oct 27. 2005
CHNG Participated in FutureGen AllianceTPRI
GreenGenGreenGen stage Istage Isigning ceremony in 2006signing ceremony in 2006
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GreenGenGreenGen stage IIstage IIsigning ceremony on April 18signing ceremony on April 18thth 20072007
CHNG singed the agreement about GreenGen Stage II with the government of Tianjin City ,and will build 2×400 MW GreenGen in Tianjin
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high efficiency and large scale gasification high efficiency and large scale gasification
gas cleanupgas cleanup
hydrogen gas turbine technology hydrogen gas turbine technology
FC FC
membrane separation membrane separation
COCO22 capture and sequestrationcapture and sequestration
system integrationsystem integration
Key technologies
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700kg/d,1997700kg/d,1997--2000, funded by MOST and SPC2000, funded by MOST and SPC
36t/d (10MWth )Funded by National“863” Program2001-2005
2000t/d2000t/d，， 20092009
Two Stages Two Stages Gasification Gasification
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Gasifier Type:• oxygen Entrained flow• 2 Stages Reaction• dry feed• No syngas recycle• with water cooling wall • with waster heat recovery• Pressure: 3.0MPa
• Temperature: 1300~1600℃
• Cold syngas efficiency: >81%
• CO+H2>90%
• Carbon conversion>98%
Two stages gasificationTwo stages gasification
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Pilot facility :
Coal Feed Rate: 36 t/d
Pressure: 3.0MPa
Completed: 2005
Fund: MOST, CHNG
Partners: 7
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36t/d (10MWth )Funded by National“863” Program2001-2005
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Syngas Cleaning Pilot Scale Facility at TPRI
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Software for IGCC and FC System Design and Optimization Based on Aspen Plus
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R&D on FCR&D on FC
5kW SOFC funded by MOST.5kW SOFC funded by MOST.
50kW MCFC funded by MOST. 50kW MCFC funded by MOST.
The software for design and optimization for FC The software for design and optimization for FC power system funded by MOST. power system funded by MOST.
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H2/CO2 Separation
Simple and compact facilities, so need little space. It has good efficiency and flexibility, easy to operation and low cost. No additional pollution(the cost is 25% lower than absorption )
Hard to get high concentration CO2
Membrane
Simple principleHigh energy penalty and bulky facilities
Cryogenic
Low energy penalty and simple process
Limited sorbent capacity, so need more sorbent and high automatization for sorbent’s frequent desorption.
PressureSwingAdsorption(PSA)
Adsorption
Good absorption selectivity, CO2concentration can be up to 99.9%.
High energy penaltyChemical
CO2 can be separated only by decompressed and distilled, need little regeneration energy.
Bad absorption selectivity, so good absorbent performance is the key
PhysicalAbsorption
AdvantagesShortcomingSeparation methods
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Means of Geological Sequestration or Storage of CO2Means of Geological Sequestration or Storage of CO2
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CO2 storage capacity in ChinaTPRI
COCO22 storage in deep geologic formationstorage in deep geologic formation and and
enhance oil recoveryenhance oil recoveryTPRI
Geological map of the Bohai and Ordos Basins
GeoCapacity
COACH
TPRI,GreenGen Co. joined the COACH and will join the
cooperation with UK for CO2 capture and sequestration
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SummarySummary
China needs needs GreenGen
Roadmap of GreenGen Program was ready in 2004
First stage demonstration project is based on the China’s intellective property, and will go into operation in 2009
Demonstration project is funded by MOST
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