cfb technology development in kier - processeng. d. shun.pdf · cfb technology development in kier...
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CFB TECHNOLOGY DEVELOPMENT IN KIER
October 28, 2013 Daejon
Dowon Shun, Dal-Hee Bae
Korea Institute of Energy Research(KIER)
Clean Coal Center
Expanding demand of coal and coal power
• New coal power in Asia(2014)
– East Asia 69.7GW – West Asia 41.3GW – Africa 4.1GW
• New award (2013) – 1199units in 59
countries – China & India 76% – U.S.A. 36 New units
INTRODUCTION
New coal power in Asia;200% increase of capacity that of 2000
Source: J-POWER, Coal-fired Power Generation– Indispensable Japan’s Base Power Source, J-POWER Group SUSTAINABILITY REPORT 2012
Deficiency of Steam coal
• By 2030 world coal power plants need 5400MT of coal (4000kcal/kg)
– 2012 world coal production 7,831MT – China and India expand coal power plants (China 900 India 700MW coal power of near future plan) – World market is heavily depend on Indonesian coal expoert
• Utilization of low rank coal is imposing issue – CFBC is an optimum solution – Applicable to the coal of China, India, Indonesia, Turkey
DEVELOPMENT
Thermal coal export market growth and Indonesia is the major supplier
Clean Coal Center
World CFB market
• Chinese is leading the market
– China 46.5GW – India 8.5GW award
after year 2000 • Chinese model is
market standard in Asia
– 150MWe > 150 – 300MWe > 100 – 600MWe Super
Critical = 1 in China
CHALLENGE
600MWe Dong Fang Boiler
Large scale CFBC
• SC-CFB market has a little delay – 2000-2010 150MWe – 2010-? 300MWe – Waiting for report from Lagiza(Poland), Baima(China),
Samchuk(Korea) until 2015? – Korean engineering develops CFBC from 150MWe
• Must show special advantages toward Low rank coal against lignite boiler.
– High ash & high moisture low heating value – Troubles with cyclone, loop seal and erosion
CONCLUSION
Samchuk 500MWe x 4 SC-CFBC
CFBC distribution in Korea
• 1985~2000: about 17 boilers constructed • Industrial boiler to supply steam (200ton steam/h) • Original boilers were imported technology (Ahlstrom, Lurge,
ABB, ..)
• 2000~: about 10 new boilers are under construction ng
• 10 new boilers are contracted to build in next 5 years • Including 300MWe CFBC Power plant
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2,000
19861988
19901992
19941996
19982000
20022004
20062008
20102012
Year
Stea
m rat
e(Ton
/h)
RDFCoal
KIER CFBC Research history
1MWe CFBC for RDF
0.1MWth Test unit
1KWth Emission Test unit
10MWe commercial CFBC forRDF
Tech service for CFBC 1991 1997
2007
2011
2007-2010
• Commercial Boiler Design • Fuel Diversifications
• Diagnosis and monitoring
Business consulting for CFBC power plants
2008
FBC boiler for Power and Steam
Combustor
S/H1
S/H2
A/H
Econ.
FD Fan
ID Fan
Stack
Cyclone
To Steam Generator
Air
Drum
RDF Hopper
SDR
Scru
bber
Combuston Heat
transfer Emission control
Ash removal
Dioxin control
• 1MWe equivalent • Industrial boiler for power and steam
K (RDF: 4,400-4,500Kcal/kg)
RDF
Moist.(%) 5
Ash(%) 19
Elemental (%)
C 43.5
H 6.34
N 0.71
S -
O
Cl 1.0
150mm dia. x 500mm length
Fabricated K RDF combustion
Temperature profile (K-RDF, 2007. 3. 28.)
Steam temperature
Emission Characteristics
0
20
40
60
80
100
120
15:2516:1
517:0
517:5
518:4
519:3
520:2
521:1
522:0
522:5
523:4
50:3
51:2
52:1
53:0
53:5
54:4
55:3
56:2
57:1
58:0
58:5
59:4
510:3
511:2
5
T ime(min)
Conc
entr
atio
n(pp
m)
0
5
10
15
20
25
Conc
entr
atio
n(m
g/m
3)
SO2
NOx
TSP
2007.06.25.
O2 (%)
CO2 (%)
SO2 (ppm)
NOx (ppm)
CO (ppm)
HCl (ppm)
TSP (mg/Sm3)
7.3 10.1 2.5 78.2 155.9 298.3 22.4
Design considerations
• 60 steam ton/h requires 250ton/day RDF or 300ton/day Biomass
• Corrosive combustion environment need stern metal protection
• Heavy measure for environment control is required
10MWe CFBC boiler for RDF
• Combustor -Water wall – 4m x 4m x 24m - 30MWth
- Drum • Hot cyclone - ID 4m x 9m • Convection pass - Superheater 2 – 5MWth - Superheater 1 – 5MWth - Economizer – 8MWth - Air heater – 2MWth
Fuel Fuel
CAD of 10MWe CFBC
FBC for Waste Fuel and Biomass
• 10MWe FBC co-generation facility for RDF
– New concept for RDF • Commercial scale FBC
with fuel flexibility – Dispersed generation – Utilizing RDF, biomass, low
rank coal
10 MWe CFBC for RDF
Prospect of FB Power Generation
FBC Co-generation
Commercial
SC-FBC Power
Generation (500MWe)
FBC Power(150-300MWe)
Steam Boiler for industry
Waste & Biomass RDF
Brown coal
Hard coal
Upgrading
FGD
A Conceptual model of CCT Power Gen W/ CO2 capture
18
B O I L E R
CO2 H2O
Moist coal feed( mc)
Dry coal transfer
Briquetted product(mdc)
Cyclone
Briquetting
Bag filter
Dried coal
CC UPGRADING HELE
* Tehnology Roadmap, IEA 2012
• Utilization of low rank coal is a major issue in thermal power sector
• To increase efficiency coal upgrading and large scale CFBC is necessary
– CFBC is a good solution for low rank coal – Market will be divided by 500MWe CFBC and 1000MWe
PC – Both CFBC and PC will go further to HSC
CONCLUSION
Thank you for your attention!