advanced cfb technology for utilization of standardized srf
TRANSCRIPT
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Advanced CFB technology for utilization of
standardized SRF
Juha Sarkki
Foster Wheeler
RECOMBIO final conference
June 13, 2013, Helsinki
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Foster Wheeler AG, Business Groups
The Global Engineering & Construction (E&C) Group
The Global Power Group
1
Designing, constructing, and managing projects for some of the
world´s largest process plants in a wide range of industries, including
oil and gas, chemicals, and pharmaceuticals.
Designing, manufacturing, and erecting a full line of boilers, and
environmental products for utility, industrial, and cogeneration
clients. A world-leading expert in combustion technology.
RECOMBIO final conference June 13, 2013, Helsinki
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Foster Wheeler Global Power Group Offices
Management and support operating unit HQs and/or main engineering centre
Regional/local engineering centre
Sales offices
Denver, CO
Espoo
Norrköping
Varkaus
Krefeld
Madrid
Warsaw
Tarragona
Sosnowiec
Shanghai
Xinhui
Beijing
Bangkok
Colton
Martinez
Camden
Petrox
Ban Chang
Santiago
A global business with approximately 3,000 highly-skilled people
Hanoi
Manufacturing facilities (GPG)
Power plant operation
Kurikka
Friedrichsdorf
2
St. Louis, MO
Phoenix, AZ
Charlotte, NC
Atlanta, GA
Clinton, NJ
Univ. of Minnesota
Melbourne, FL
McGregor, TX
Pittsburgh, PA
Chicago, IL
Houston, TX
Al-Khobar
RECOMBIO final conference June 13, 2013, Helsinki
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World Leader in Fluidized Bed Combustion
(CFB) Technology
• First BFB boilers delivered in the 1970s, and world’s first CFB boiler supplied in 1979.
• World’s first once-through supercritical CFB boiler started operation in 2009 in Lagisza, Poland.
• Flexi-Burn® - air/oxy flexible CFB boiler commercially available by the end of 2013.
• CFB boiler fuel flexibility and multifuel capability provide for efficient utilization of fossil and
renewable fuels.
• 111 Biomass CFB boilers (full biomass and co-combustion)
• Biggest units under construction 550 MWe Benson supercritical CFBs for coal in Korea
136 - Bubbling fluidized bed (BFB) boilers 411 - Circulating fluid bed (CFB) boilers
• 375 delivered
• 36 under construction
• Biggest unit in operation 460 MWe
• 136 delivered
11 - Atmospheric fluidized bed gasifires
• 11 delivered
PKE Lagisza, Poland Äänevoima Oy, Finland Lahti Energia, Finland
3 RECOMBIO final conference June 13, 2013, Helsinki
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Foster Wheeler Global Power Reference Base
2,533 Units - over 220 GWe
Circulating Fluidized Bed (CFB) Boilers Waste Heat Boilers
Heat Recovery Steam Generators
Bubbling Fluidized Bed (BFB) Boilers PC Boilers
Gasifires
4
Total Sold FW Units
Units MWe
PC 331 109,801
CFB 411 31,854
Oil & Gas 324 41,462
HRSG 410 26,290
Industrial 1,007 14,445
Solar 50 2,209
Total 2,533 220,061
RECOMBIO final conference June 13, 2013, Helsinki
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Kauttua 65 MWth, 25 kg/s, 83 barg, 500 C
Co-firing REF with wood residue, peat and coal
Burn tests of used packaging in 1992-1993
RECOMBIO final conference June 13, 2013, Helsinki
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Fuel map in 1998
RECOMBIO final conference June 13, 2013, Helsinki
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Heating
Value,
MJ/kg
20
35
0
5
10
PEAT
BARK
- PLY -
WOOD
SEWAGE
SLUDGE
BIO &
FIBER
SLUDGE
&
S
ANTRACITE
COAL
WOOD BIOMASS
DEMOLITION
WOOD
CHIP-
BOARD -
POLYOLEFIN
PLASTICS
(PE, PP, PC..)
COLORED
OR
PRINTED
PLASTICS,
CLEAN
COLORED
OR
PRINTED
MIXED
PLASTICS
RDF
CONSUMER
SRF
MIXED
PLASTICS
PAPER &
WOOD
PETROLEUM COKE
DEINKING
SLUDGE SEWAGE
SLUDGE
REF
PELLETS
WOOD &
PLASTICS
SRF
COMMERCIAL
&
INDUSTRIAL
BITUMINOUS
COAL
ANTRACITE
COAL
BIO &
FIBER
SLUDGE
BROWN COAL,
LIGNITE
PLY-
WOOD
Burning Difficulty
WASTE
COAL
OIL
SHALE
CFB Fuel
Range
CFB Technology opens the door to
Fuel Flexibility and Carbon Neutral Fuels
RECOMBIO final conference June 13, 2013, Helsinki
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Fuel class
Ste
am
para
mete
rs
Söderenergi -
IKV
• Demolition wood up to 100 %
• REF < 25% – CFB
– IntrexTM
– Short empty pass
– Easily exchangable superheaters
Easy fuel Challenging
fuel
• RDF&REF
– CFB
– Intrextm
– Easily exchangable superheaters
– Empty pass
– Water cannons in empty pass
– Stoker fuel feeding
– Spring hammer SH soot blowing
Lomellina II
• Bio fuels with low portion of recycled fuels
– BFB/CFB
Mälarenergi
• Demolition wood up to 100 % – CFB
– IntrexTM
Prokon Nord
FW’s multiple Boiler Concepts for waste fuels and biomass
RECOMBIO final conference June 13, 2013, Helsinki
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CFB-
Concept
for SRF
and
RDF >30 CFB references for
co-firing various
types of waste
Lomellina I (2000) and II (2007)
RDF 59 MWSt, 24.1 kg/s, 62 bar, 443ºC
Högdalen (2000)
REF 91 MWSt, 31.8 kg/s, 60 bar, 480ºC
Viken Energinett (2001)
SRF (selected high calorif. ind. fractions) 34.5 MWt, 16 bar, 204ºC
10 Altholz plants in Germany,
Holland and Belgium (1996-2010) 60-100 MWSt, 90 bar, 520ºC
Design Basis of FW CFB Concept for waste fuels
RECOMBIO final conference June 13, 2013, Helsinki
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Multifuel CFB for Waste and Clean Biomass (CHP) Igelsta (Söderenergi AB, Södertälje)
240 MWth, 73 MWe-net, 209 MWDH, 92 kg/s, 90 bar, 540 C
Emissions 6%O2, dry
NOx [mg/MJ] 35*
SO2 [mg/m3n] 75
CO [mg/m3n] 50*
Dust [mg/m3n] 10
NH3 ppm 10
TOC [mg/m3n] 10
HCl / HF [mg/m3n] 10 / 1
Cd+Tl / Hg / HMs [mg/m3n] 0.05 / 0.05 / 0.5
PCDD+F [ng/m3n] 0.1
*) only at 100% load with Mix 1, 2, and 3
Fuel Mix 1 Mix 2 Mix 3
Biomass [%]LHV 75 30 100
Rec.wood [%]LHV 0 70 0
REF pellets [%]LHV 25 0 0
Moisture [%]ar 44.3 35.6 50.0
Ash [%]dry 6.5 4.7 4.0
Nitrogen [%]dry 0.6 0.8 0.5
Sulfur [%]dry 0.09 0.08 0.06
Chlorine [ppm]dry 1200 800 200
LHV [MJ/kg]ar 9.7 11.0 8.3
Total plant efficiency ~110%LHV 90%HHV
RECOMBIO final conference June 13, 2013, Helsinki
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Refuse Delivered Fuel (RDF)
0.3 % ds
0.9 % ds
27%
14.3%
12.9 MJ/kg
FUEL DATA
Sulphur
Chlorine
Moisture
Ash (as received)
LHV (as received)
DESIGN PERFORMANCE, O2 11% in dry gases Flue Gas Exit Temperature Boiler Efficiency Emissions - NOx
- CO
168 °C 90.2% < 35 mg/MJ < 50 mg/Nm³
RDF FIRED CFB BOILER E.ON Värme Sverige AB, Norrköping, Sweden
85 MWth, 30 MWe, 31 kg/s, 66 bar, 450 C
- Biomass based combustible fraction is 60 % of RDF
RECOMBIO final conference June 13, 2013, Helsinki
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Dust
CO
SO2
NO2
Total C
HCl
HF
Cd, Tl
Hg
Heavy metals: Sb, As, Pb, Cr, Co, Cu, Mn, Ni, V, Sn
PCDD/PCDF
10
50
50
200
10
10
1
0.05
0.05
0.5
0.1
mg/Nm³
Emission permit values
RECOMBIO final conference June 13, 2013, Helsinki
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Fuel feeding
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Intrex SH
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Spring Hammers: Idle pass & Horizontal pass
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Gas
flow
FEATURES:
•spring anvil raises the
frequency but conveys
high impact force
• sequence controlled
(10 blows at a time - waiting
time adjusted)
• no steam consumption
Tube bank with FW-spring hammer cleaning
RECOMBIO final conference June 13, 2013, Helsinki
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Bottom Ash Removal System
Bottom ash removal system:
• Discharge chutes
• Water-cooled bottom ash screws
• Rotating Screen
• Coarse material from screento
bottom ash container
• Reinjection of fine material to
furnace
RECOMBIO final conference June 13, 2013, Helsinki
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Heating value of SRF vs time
0
5000
10000
15000
20000
25000
30000
9.9.2007 19.9.2007 29.9.2007 9.10.2007 19.10.2007 29.10.2007
Date
Calc
ula
ted
& a
naly
se
d L
HV
[k
J/k
g]
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Combustion
Technology:
Fuel spec
Boiler supplier in flow chain for SRF
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• Common definition of SRF for the supplier and the customer
• Improved understanding of SRF as fuel
• Improved business environment for WtE applications
• Model for good practice
• Link between waste and power
• Testing methods for characterization of SRF
• Tools for quality assurance
• Product improvement and development
SRF standard in use
RECOMBIO final conference June 13, 2013, Helsinki
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• Standards provide tools for SRF with consistent quality and quantified
properties
• Foster Wheeler CFB technology is a proven solution for SRF in power
generation with high steam parameters and with good emission
performance
Take Away
RECOMBIO final conference June 13, 2013, Helsinki
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