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CFB TECHNOLOGY DEVELOPMENT IN KIER

October 28, 2013 Daejon

Dowon Shun, Dal-Hee Bae

Korea Institute of Energy Research(KIER)

dshun@kier.re.kr

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!