cfd usage in alstom ecs - chalmers · cfd usage in alstom ecs ali tabikh 05 2006. date of last...
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CFD usage in Alstom ECS
Ali Tabikh
05 200605 2006
Date of last change Reference/Name of Presentation/SN 2
SIAMUF
Alstom History Alstom Business areas…….. About Environmental Control Systems (ECS) , Växjö
– Electrostatic Precipitators (ESP)– Wet Flue Gas Desulphurisation (WFGD)– Dry Flue Gas Desulphurisation (DFGD)– Selective Catalytic Reduction (SCR)– Dioxines… and CO2 reduction
Modelling in Alstom– Physical Modelling– CFD Modelling
• CFD as a design tool
Discussions
Summary
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Alstom History
GEC-ALSTHOM
3
ALSTHOMALSTHOM
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ALSTOM
Global specialist in Global specialist in infrastructureinfrastructure for for energyenergy and transport and transport4
Transport Marine
T & D
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ALSTOM today
Sales €13.7 bn*
Orders €15.8 bn*
Employees 64 000
Present in 70 countries
Power
* FY 2004/05 figures
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ALSTOMPower
ALSTOMT&D
ALSTOMTransport
ALSTOMSverige
6
Astom Sverige
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Anställda i Sverige 3 000varav:
• Industriturbiner 2 100
• Customer Service 450
• Hydro Systems 180
• Boiler & Environment 140
• T&D 130
Anställda i Sverige 3 000varav:
• Industriturbiner 2 100
• Customer Service 450
• Hydro Systems 180
• Boiler & Environment 140
• T&D 130
Orter med mer omfattandeverksamhet
Övriga orter
Alstom Sweden
7
Orderingång €725 M. 01/02Orderingång €725 M. 01/02
VVääxjxjöö
Stockholm
Luleå
Skellefteå
Sundsvall
Gävle
VästeråsStorforsStorfors
Ludvika Enköping
ÖÖrebrorebro
GGööteborgteborg
MalmMalmöö
FinspFinspåångng
KarlstadKarlstadVäxjö
FinspFinspåångng
VVäästersterååss
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VVääxjxjöö8
Products and Services
Environmental ControlSystems
– Particulate cleaning systems
– Flue gas cleaning systems
– "Waste-to-Energy"
– Service & maintenance
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Electrostatic Precipitator (ESP)
Particulate cleaning systems
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ESP Principle
Discharge electrodes Discharge electrodes
Dust-laden gas
Dust particles
Collected dust
Clean gas
Collecting electrodes
Corona
90B03CSP/06-97
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Fabric Filter
Particulate cleaning systems
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WFGD
Air
LimestoneForced Oxidation
Mill
ME Wash
Water
Cake Wash(Optional)
PrimaryDewatering
SecondaryDewatering
Fabric FilterOr ESP
Absorber
ReclaimWaterTank
Make-UpWaterTank
GYPSUM
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WFGD
ReagentPreparationSystem
AbsorberVessel
Dewatering Area
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DFGD
NID system
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DFGD (SDA)
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Modelling and Pilot Testing
Physical Modelling
CFD Modelling
Pilot Testing
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Physical Modelling
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CFD Modelling
Single phase – ESP ( flow distribution prediction)
– Fabric Filter ( Flow distribution and pressure drop)
– SCR ( Flow, NH3, NOX, and Temperature distribution)
– Gas mixing
Multiphase – SCR ( Ash Capture, NH3 direct injection)
– DFGD ( SDA )
– SWFGD (Flue gas conditioning)
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CFD Modelling
Single phase
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CFD Modelling
Multiphase
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Pilot Testing
Multiphase Validation
Level z = -100 mm
-25
-20
-15
-10
-5
0
5
10
15
20
-0.65 -0.45 -0.25 -0.05 0.15 0.35 0.55
Distance from centerline [m]
[m/s
]
Velocity u, CFD Velocity u, meas
Level z= -100 mm
-35
-30
-25
-20
-15
-10
-5
0
5
10
-0.65 -0.45 -0.25 -0.05 0.15 0.35 0.55
Distance from centerline [m]
[m/s
]
Velocity w, CFD Velocity w, meas
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Pilot Testing
Multiphase Validation
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Conclusions
More validation is needed
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