fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/pdf_archivio/saet -...
TRANSCRIPT
![Page 1: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/1.jpg)
ANIMP Milano - 11 Luglio 2013
Fuel flexibility and high efficiency
biomass power plants
Antonio Zingales Omar Merlin Kim Kokholm
![Page 2: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/2.jpg)
Background• Security of fuel supply to ensure operational
hours of the power plant.• Reduced fuel price sensitivity in the power plant
business plan.• Improved negotiation basis with fuel suppliers.• Ability to consider higher level of local fuels
from agro-industry (wheat straw, poultry litter, olive husk, rice husk, rice straw etc.)
• Ability to mix “opportunity” fuels into the normal fuel supply to the boiler. Positive impact on OPEX.
![Page 3: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/3.jpg)
KEM solution• Based on more than 20 years proven
operational background.• Wide range of fuel types based on similar
design concept.• Same basic grate technology used for all
plants.• Modifications mainly required at fuel in-feed and
fuel handling in order to expand fuel range. Limited CAPEX impact.
• Boiler design with steam parameters up to 110 bar, 520°C.
![Page 4: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/4.jpg)
Boiler designFinal SH. Platen SH in TP 347
(austenite). High pitch. Designed to foul (no cleaning).
Intermediate convection SH with rectractable soot blowers.
ECO with in-line bare tubes with fixed type soot blower.
APH for sec. Air. Airtube design with high pitch and fixed type
soot blowers.
![Page 5: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/5.jpg)
Firing technologyFiring technology:• Continuous feeding of high and low density fuel.• Equal distribution on grate by controlled mechanical
feeding in full width of grate sections.
![Page 6: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/6.jpg)
Firing technology• Safety gate for isolating the feeding system from the hot
zone (boiler trip).• Frequency control + total mass flow adjustment.• Silo with downwards expanding dimensions/area.
![Page 7: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/7.jpg)
Firing technology
Straw bale shredding
![Page 8: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/8.jpg)
Grate TechnologyGrate technology:• Air cooled mechanical step grate used in many high
and low LHV biomass power plants (wheat straw, olive husk, rice husk, poultry litter, wood chips A+B type, peat…)
• Controlled combustion with constant fuel movement. • Individually controlled combustion zones (drying,
combustion, burn-out).
![Page 9: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/9.jpg)
Grate technologyGrate technology:• Advanced air flow control (distribution to 4 zones,
distribution PA + SA + FGT).• Low C-content in bottom ashes due to long residence
time of embers.• Fuel flexible.
![Page 10: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/10.jpg)
Capacity diagram
• Controllable thermal output with high variation in LHV and boiler load • Automatically adjustable combustion parameters based on steam load
and fuel conditions.• Mass flow feeding system avoiding variations in fuel density.
• Combustion monitoring with feed back to fuel feeding, combustion air system and grate parameters (speed and air zone division).
![Page 11: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/11.jpg)
FGT
SNCR concept:• Up to 3 injection levels according to the Emission
Limits in the Erection Site;• Good effect in Ammonia Slip (Guarantee ≤10mg/Nm3, expected 3÷8mg/Nm3)
• Dedicated PLC for flow rate regulation of each Lance
![Page 12: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/12.jpg)
FGT
FGT concept:• Circular bag filter design with improved security
towards ember collision with the bags.• Dry adsorption for reduction of SO2 and
HCl/TOC.• BAT for straw FGT. In general for high KCl fuel
types (1 year growing).
![Page 13: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/13.jpg)
FGT
• Flat bottom ash extraction. No angled hoppers with reducing area.
• No direct bag impact of ashes due to cyclonic design compared to rectangular designs.
• Well referenced with various biomass types.• Equal temperatures inside the filter casing
reducing cold zones (corrosion).
Limiti emissione COMedia Mensile
≤100 mg/Nm3
Limiti emissione SOxMedia mensile
≤100 mg/Nm3
@ 11% O2
Limiti emissione NOxMedia mensile
≤150 mg/Nm3
@ 11% O2
Ammonia slip ≤10 mg/Nm3
![Page 14: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/14.jpg)
Material HandlingLong Term Storage
![Page 15: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/15.jpg)
Material HandlingMedium Term Storage
![Page 16: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/16.jpg)
Material HandlingShort Term Storage
![Page 17: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/17.jpg)
Ref. 1 - Slagelse, DKSteam production: 40 Steam production: 40 Steam production: 40 Steam production: 40 t/ht/ht/ht/h, , , , 450450450450°°°°C, 64 barC, 64 barC, 64 barC, 64 bar.
Grate fired water tube steam boiler fired with wheat straw.
Complete supply with :
• Fuel feeding system • Air cooled mechanical grate• Furnace design ( w/ AB) • Combustion air system• Wet ash transport system
![Page 18: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/18.jpg)
Ref 2. - Fibro Power, UKSteam production: 58 Steam production: 58 Steam production: 58 Steam production: 58 t/ht/ht/ht/h, , , , 450450450450°°°°C, 64 barC, 64 barC, 64 barC, 64 bar.
The grate fired water tube steam boiler is designed to be fired with poultry litter based on straw/wood fines.
Complete supply with :
- Fuel feeding system- Air cooled mechanical grate- Furnace design (W/ AB)- Combustion air system- Wet and dry ash transport sys
![Page 19: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/19.jpg)
Steam production: 42 Steam production: 42 Steam production: 42 Steam production: 42 t/ht/ht/ht/h, , , , 400400400400°°°°C, 42 bar.C, 42 bar.C, 42 bar.C, 42 bar.The grate fired water tube steam boiler is designed to be fired with residues from olive oil production (orujillo) and cuttings from olive trees (residuos de poda). High LHV fuel types.
- Automatic crane system- Fuel feeding system- Air cooled mechanical grate- Steam boiler w/ economiser- Deaerator and feedwater sys- Combustion air system- Fluegas cleaning system- Chimney and ducts- Gangways and stairs
Ref. 3 - Extragol, ES
![Page 20: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/20.jpg)
Ref. 4 - Valorbois, BESteam prod. 20 Steam prod. 20 Steam prod. 20 Steam prod. 20 t/ht/ht/ht/h, 455, 455, 455, 455°°°°C, 46,5 barC, 46,5 barC, 46,5 barC, 46,5 bar.
The grate fired water tube steam boiler is designed to be fired with wood biomass class A and B. Complete supply with :- Fuel handling by automatic crane- Fuel feeding (weighting system)- Air cooled mechanical grate- Steam boiler- Combustion air system- Ash transport- Flue gas treatment (bag filter)- Electrical installations,- instrumentation etc.Project carried out in consortium with Areva Bioenergies (Bremen).
![Page 21: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/21.jpg)
Ref. 5 - Taufkirchen, DESteam prod. 12 Steam prod. 12 Steam prod. 12 Steam prod. 12 t/ht/ht/ht/h, 455, 455, 455, 455°°°°C, 35 barC, 35 barC, 35 barC, 35 bar.
The grate fired water tube steam boiler is designed to be fired with wood biomass class A and B. The plant was commissioned in 1999
Complete supply with :- Fuel handling by automatic crane- Fuel feeding (weighting system)- Air cooled mechanical grate- Steam boiler- Combustion air system- Ash transport- Flue gas treatment
(ESP + wet scrubber 17 BmSch)- Electrical installations,- instrumentation etc.
![Page 22: Fuel flexibility and high efficiency biomass power plantsanimp.it/animp_/images/PDF_archivio/saet - da pubblicare.pdf · Fuel flexibility and high efficiency biomass power plants](https://reader034.vdocument.in/reader034/viewer/2022042209/5eada007963bea3cb7032c55/html5/thumbnails/22.jpg)
Steam prod.: 43 Steam prod.: 43 Steam prod.: 43 Steam prod.: 43 t/ht/ht/ht/h, 450, 450, 450, 450°°°°C, 64 bar.C, 64 bar.C, 64 bar.C, 64 bar.The grate fired water tube steam boiler is designed to be fired with forest wood chips and cork powder.Complete supply with :- Automatic crane system -2 cranes- Fuel feeding system- Pneumatic fuel feeding system- Air cooled mechanical grate- Air preheater- Steam boiler w/ economiser- Combustion air system- Fluegas clean. w/multicyclone ESP- Chimney and ducts- Gangways and stairs
Ref. 6 Santa Maria,PT