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Babcock-Hitachi K.K. 1All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Wet Flue Gas Desulphurization SystemWet Flue Gas Desulphurization System
MarchMarch 1122, 2012, 2012
BabcockBabcock--Hitachi K.K.Hitachi K.K.
Promising to contribute to global welfare Promising to contribute to global welfare with technologies of energy and environment systemswith technologies of energy and environment systems
Introduction of BabcockIntroduction of Babcock--Hitachi K.K.Hitachi K.K.
Babcock-Hitachi K.K. 2All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
1. General Information1. General Information
Babcock-Hitachi K.K. 3All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
BabcockBabcock--Hitachi in HITACH GroupHitachi in HITACH Group
PresidentPresident Corporate StaffCorporate Staff
Intellectual Property DivisionIntellectual Property Division
R&D DivisionR&D Division
Power Systems Company
Power Systems Power Systems CompanyCompany
Information & Control Systems CompanyInformation & Control Systems Company
Urban Planning & Development Systems CompanyUrban Planning & Development Systems Company
Industrial & Social Infrastructure Systems CompanyIndustrial & Social Infrastructure Systems Company
Mr. Hiroaki Nakanishi
Hydroelectric PowerSystems Division
Hydroelectric PowerHydroelectric PowerSystems DivisionSystems Division
Nuclear Systems DivisionNuclear Nuclear Systems DivisionSystems Division
Thermal PowerSystems DivisionThermal PowerThermal Power
Systems DivisionSystems Division
Power & Industrial Systems Division
Power & Industrial Power & Industrial Systems DivisionSystems Division
Boiler and Air Quality ControlSystems Division
Boiler and Air Quality ControlBoiler and Air Quality ControlSystems DivisionSystems Division
Babcock – Hitachi(100% Owned)
Babcock Babcock –– HitachiHitachi(100% Owned)
Mr. Tetsuro Wakino
Babcock-Hitachi K.K. 4All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Power Systems Company of HITACHIPower Systems Company of HITACHI
Nuclear Power Business Others
Thermal Power Business
Central Control Panel
(ABWR, ESBWR)
Preventive Maintenance, Fuel Cycle, etc.
Wind Power Sys. Solar Power Sys.
Hydro Power Sys.
Power Device
PBT Smart Grid,Transmission & Distribution SystemPET Service, etc.
AQCSCoal Fired PP
GTCC, Preventive Maintenance, etc.
Gas TurbineCO2 Capture Solution
Nuclear EquipmentRPV<Major Equipment>
20%20%
FY2010SALES¥813.2B
60%
Blue : Products of BHK
Babcock-Hitachi K.K. 5All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Outline of BabcockOutline of Babcock--Hitachi K.K.Hitachi K.K.
- Established 1953
- Employees 3,200 (Worldwide)
- Head Office Tokyo, Japan
- WorksKure 1st & 2nd, Noumi, AkitsuPhilippine (BHPI), China (BHDB)
- LaboratoriesKure, Akitsu
- Affiliated CompaniesDomestic : 2 / Overseas :3
- Quality CertificatesISO 9001, ISO 14001, ASME S, U and U2
Babcock-Hitachi K.K.
Segment of Power & Environmental
in Hitachi groupStock holder: Hitachi Ltd. (100%)
Babcock-Hitachi K.K. 6All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Company HistoryCompany History
Hitachi, Ltd.Hitachi, Ltd. B&W UKB&W UK19081908192719271928192819531953195919591961196119641964196519651971197119751975197819781987198719951995
BabcockBabcock--Hitachi establishedHitachi established
Kure Branch Works became independent from Hitachi WorksKure Branch Works became independent from Hitachi Works
Totally independent from Hitachi Ltd. Totally independent from Hitachi Ltd.
Corporate name changed to Corporate name changed to Toyo Babcock Ltd. Toyo Babcock Ltd.
Hitachi Works Boiler Manufacturing Hitachi Works Boiler Manufacturing Department establishedDepartment established
Hitachi Works Kure Branch Works establishedHitachi Works Kure Branch Works established
Zenma Works Ltd. Zenma Works Ltd. establishedestablished
[Expansion on Production Locations]1987 Akitsu Works1989 Noumi Works1989 Philippines (BHPI)1996 China (BHDB)
[Expansion on Production Locations]1987 Akitsu Works1989 Noumi Works1989 Philippines (BHPI)1996 China (BHDB)
Merged Merged ((CapitalCapital……¥¥1,235million1,235million))
Share Holding Ratio amounted to Share Holding Ratio amounted to 100% of Hitachi, Ltd.100% of Hitachi, Ltd.
(Capital(Capital……¥¥ 1,852.5 million)1,852.5 million)
(Capital(Capital……¥¥ 2,637.5 million)2,637.5 million)
(Capital(Capital……¥¥ 3,000 million)3,000 million)
(Capital(Capital……¥¥ 5,000 million)5,000 million)
2005200520062006
Hitachi Power Systems America (HPSA) establishedHitachi Power Systems America (HPSA) establishedBabcock Babcock BorsigBorsig Power Systems (BBPS ) acquiredPower Systems (BBPS ) acquired20032003
20112011Hitachi Power Europe (HPE) establishedHitachi Power Europe (HPE) established
Babcock-Hitachi K.K. 7All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Main ProductsMain Products
Integrated & Dedicated
Product Line-up forPower and Industrial
Plant
Power Boilers
HRSG
Industrial Boiler FGD SCR Nuclear Power
Industrial Plants
Incinerators
Babcock-Hitachi K.K. 8All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Kure First WorksKure, Hiroshima, JapanDesign and manufacturing of boilers
Head office
Kure Second WorksKure, Hiroshima, JapanManufacturing of nuclear power related products
Akitsu WorksHigashihiroshima, Hiroshima, JapanManufacturing of catalysts
Noumi WorksEdajima, Hiroshima, JapanManufacturing of heat recovery steam generators and other products
Office & Works in JapanOffice & Works in Japan
Location: Akihabara UDX Building, Tokyo Japan
Babcock-Hitachi K.K. 9All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
As a core company of the HITACHI/Power&Industrial group, we provide boiler and AQCS services globally
Global Network
HITACHI Global Network for Boiler and AQCSHITACHI Global Network for Boiler and AQCS
Babcock-Hitachi K.K. 10All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Hitachi Power Systems America, Ltd. (HPSA)Basking Ridge, NJ, USA
Engineering, procurement and sales of boilers and Air Quality Control System (AQCS)
Hitachi Power Europe GmbH (HPE)Duisburg, Germany
Engineering, procurement, manufacturing and sales of boilers, AQCS and related equipment.
Works WorldwideWorks Worldwide
Babcock-Hitachi K.K. 11All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
FGD retrofits FGD retrofits ––HITACHI formationHITACHI formation
Local partner
Sub-Contractors
Joint & SeveralConsortium
Babcock-Hitachi K.K.Hitachi Power Europe
Customer
EPC contract
Babcock-Hitachi K.K. 12All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Knauf Gips KG
Sub-Contractors
Babcock Hitachi K.K.Hitachi Power Europe GmbH
EPC contractOff-take contract
Cooperation
FGD retrofits FGD retrofits –– complete solution on cooperation with complete solution on cooperation with KnaufKnauf GipsGips
Customer
Babcock-Hitachi K.K. 13All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Knauf Reference ExampleKnauf Reference Example
Gypsum wall board plant near the power station
power station FGD Gypsum
store
Gypsum Wall Board plant
Babcock-Hitachi K.K. 14All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Status of Status of emissionemission standardsstandards in Europein Europe
Babcock-Hitachi K.K. 15All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Japanese regulation of flue gas treatmentJapanese regulation of flue gas treatment
Dust: 20mg/m3NDus
t Con
c. (m
g/N
m³)
SO2
Con
c. (p
pm)
1980 1990 1995 2000 2005 2010
20
40
60
80
100
0(Year)
10mg/m3N
~ ~
Dust:5 mg/Nm3
SO2:100ppm (285mg/Nm³)
SO2:25 ppm (71mg/Nm³) Dust:10mg/Nm3
NOx:35ppm (71mg/Nm³)
SO2:50ppm (142mg/Nm³)NOx:50ppm (103mg/Nm³)
Dust:20mg/Nm3
NOx:70ppm (144mg/Nm³)
Babcock-Hitachi K.K. 16All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Air Quality Control System (AQCS)Air Quality Control System (AQCS)
BoilerDeNOx(SCR) FGD
ESP
FGD : Flue Gas Desulfurization
BoilersDeNOx(SCR)
ESP
FGD
Stack
Hitachi is one of few AQCS Supplier
for total system
Hitachi is one of few AQCS Supplier
for total system
AQCSAir Quality Control Systems Stacks
(Layout for 1000MW coal fired plant in Japan)
A/H
Babcock-Hitachi K.K. 17All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Measures for SOMeasures for SO22 ReductionReduction
Circulating Dry Scrubber (CDS)Limestone Injection into Furnace and FlueGas Humidification
Activated coke method
Sea water methodMagnesium Hydroxide -Gypsum methodWet ProcessLimestone-Gypsum method
Spray Dryer Absorber (SDA)
Semi-Dry Process
Fly ash method
Activated carbon method
Dry Process
Babcock-Hitachi K.K. 18All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Reasons for the wide application of Wet Limestone-Gypsum Process
1) Limestone* is ・ Cheapest Absorbent・ Abundant in nature・ Easy Handling
2) Gypsum is ・ Useful for Cement Additives・ Useful for Wallboard Materials・ Easy Storing・ Easy Handling
3) The System is ・ Simple・ Easy to Operate・ High Reliability ・ High efficiency
FGD Process:FGD Process: Wet LimestoneWet Limestone--Gypsum ProcessGypsum Process
* also quick lime technology available (Walsum Power Plant - Branntkalk)
Technical Response to Emission regulations
Forced oxidation limestone gypsum process as almost standard technology(after technological and economical comparison)
Performance optimisation and cost reduction results in highly standardised absorber
Babcock-Hitachi K.K. 19All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
2. Babcock-Hitachi’s WFGD Technology
Babcock-Hitachi K.K. 20All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Development of Hitachi WFGD SystemDevelopment of Hitachi WFGD System
PERFORATEDTRAY TOWER
SPRAY TOWER
R&D / PILOT
ADVANCED SPRAY TOWER
MATSUURA #1 – 1,000MW TACHIBANAWAN #2 – 1,050MWMATSUSHIMA #2 – 500MW
TRAY TOWER SPRAY TOWER ADVANCED SPRAY TOWER
1962 1970 1975 1995 2000 20051980
PERFORATED TRAY TOWER SPRAY TOWERADVANCED SPRAY TOWER
Initial StageImprovement of Reliability
Targeting Low Utility and CostReduction of Utility
TAMASHIMA #3 – 500MW
2010
LIMESTONE GYPSUM FGD SYSTEM
2015
Simplification of the System
Meeting Middle Load Ope.
1985 1990
COMMERCIAL PLANT ( Total 15, - COAL 3, OIL 12 )
COMMERCIAL PLANT ( Total 9, - COAL 4, OIL 3, COM 1, PET COKE 1 )
COMMERCIAL PLANT ( Total 52, - COAL 41, Lignite 3 ORIMULSION 2, OIL 2, PET COKE 2, R.O. 2 )
Babcock-Hitachi K.K. 21All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
BHK FGD can be applied to any kinds of fuel and
various sulfur containing fuel
・Applied many kinds of fuel・Experience of high sulfur fuel
Wide Application of BHK WFGD SystemWide Application of BHK WFGD System
OIL
BHK FGD SYSTEM
ORIMULSION P. C.
FUELBHK'S EXPERIENCE1. OIL2. COAL3. COM4. ORIMULSION5. RESIDUE OIL6. PET.COKE
1000 2000 500040003000INLET SO2 CONCENTRATION (ppm)
COAL / LIGNITE
RESIDUAL OIL
Babcock-Hitachi K.K. 22All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
PriPrinciple and System Flow nciple and System Flow ofof BHK Wet FGD SystemBHK Wet FGD System
WASTE WATER
ABSORBER
AIR
BOILERESP
GAS-GAS HEATER
STACK
LIMESTONE
GYPSUM DEWATERING
GYPSUM
FAN
LIMESTONE MILL
ABSORPTION SYSTEM GYPSUM RECOVERY SYSTEM
LIMESTONE PREPARATION SYSTEM
SO2+2H2O+CaCO3 (LIMESTONE) + 1/2O2 → CaSO4•2H2O(GYPSUM)+CO2
CHEMICAL PRINCIPLE: SO2 Absorption and Oxidation
Babcock-Hitachi K.K. 23All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Absorption systemAbsorption system
SO2+2H2O+CaCO3 (LIMESTONE) + 1/2O2 → CaSO4•2H2O(GYPSUM)+CO2
CHEMICAL PRINCIPLE: SO2 Absorption and Oxidation
WASTE WATER
ABSORBER
AIR
BOILERESP
GAS-GAS HEATER
STACK
LIMESTONE
GYPSUM DEWATERING
GYPSUM
FAN
LIMESTONE MILL
ABSORPTION SYSTEM GYPSUM RECOVERY SYSTEM
LIMESTONE PREPARATION SYSTEM
Babcock-Hitachi K.K. 24All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
ABSORPTION AREA
GAS
CLEAN GAS
FLUE GAS
AIRTANK AREA
TANK AREA
AIR ;
(GYPSUM)(LIMESTONE)
・
FLUE GAS:SO2
SO2+2H2O+CaCO3+1/2O2→CaSO4・2H2O+CO2
Pso2
Xso2
SPRAY NOZZLE
SLURRY GAS FILM
LIQUID FILMDROPLET DROPLET
Principle of BHK Advanced WFGD SystemPrinciple of BHK Advanced WFGD System
CHEMICAL REACTION
SO2 Absorption and Oxidation SO2+2H2O+CaCO3 (LIMESTONE) + 1/2O2 CaSO4•2H2O(GYPSUM)+CO2
ABSORPTION AREA
(Chemical Reaction in Absorber)(Chemical Reaction in Absorber)
Babcock-Hitachi K.K. 25All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Outline of Babcock HitachiOutline of Babcock Hitachi’’s Absorbers Absorber
<Air Dispersion>
<Oxidation Agitator>
<Spray Nozzles>
<Spray Header>
Babcock-Hitachi K.K. 26All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Absorber DesignAbsorber Design
Absorber Outlet(horizontal or vertical)
Absorber Inlet
Mist Eliminator(2 – 3 stages, depending from allowable drop content)
Spray Levels(number of levels depending on sulphur in fuel, if desired with space for retrofit of spare level)
Absorber sump(with agitator for mixing and oxidation air injection)
Spray Nozzles(up and/or down spray nozzles)
Absorption Area
SO2 & Dust Removal
Absorber Sump
Oxidation
Dissolution of Limestone
Crystal growth
Babcock-Hitachi K.K. 27All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Spec. A Rubber lined 2 x 6 mm
Spec. B Rubber lined 1 x 6 mm
Spec. C Alloy plated
European Solution: Rubber Lined Absorber
Lifetime of more than 50.000 hours, Maintenance and repair of coating by rubber lining specialist company only !
Absorber Material Absorber Material –– Rubber Lining ApplicationRubber Lining Application
Babcock-Hitachi K.K. 28All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Absorber Material Absorber Material –– Flake Lining ApplicationFlake Lining Application
Acid Resistant FRLHeat Resistant FRL
Heat Resistant FRL or Metal lined
Wear Resistant FRL or Metal lined
Spark test: Inspection of lining
Primer
1st layer2nd layerTop coat
Inspection After 3 Years Operation
Babcock-Hitachi K.K. 29All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Limestone Slurry preparation systemLimestone Slurry preparation system
SO2+2H2O+CaCO3 (LIMESTONE) + 1/2O2 → CaSO4•2H2O(GYPSUM)+CO2
CHEMICAL PRINCIPLE: SO2 Absorption and Oxidation
WASTE WATER
ABSORBER
AIR
BOILERESP
GAS-GAS HEATER
STACK
LIMESTONE
GYPSUM DEWATERING
GYPSUM
FAN
LIMESTONE MILL
ABSORPTION SYSTEM GYPSUM RECOVERY SYSTEM
LIMESTONE SLURRY PREPARATION SYSTEM
Babcock-Hitachi K.K. 30All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Flow Diagram of Flow Diagram of Limestone Slurry Preparation SystemLimestone Slurry Preparation System
LimestoneFeeder
H/CClassifier
Mill TankSlurry Pump
Limestone
Limestone Slurry Tank
SiloGrinding/ Dilution
Water Supply
DistributionSystem
M
M
M
M
High
Low
WW
W
W
WWater
Main Process
W
W
Ball Mill
Babcock-Hitachi K.K. 31All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Limestone Preparation Limestone Preparation -- Wet Ball MillWet Ball Mill
- Quarry Ground Limestone or On-Site Mill
- Horizontal Ball Mill or Tower Mill
- 95% - 325 Mesh (44 µm)
- 30% Solids
H2S
O4
cons
umpt
ion
(= L
imes
tone
Rea
ctiv
ity)
Time
Standard
HorizontalBall Mill
Photo Horizontal Ball Mill
<Before Project Start >Evaluation of Limestone activity
Reliable Design
・Limestone Activity Test
Babcock-Hitachi K.K. 32All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Gypsum Recovery SystemGypsum Recovery System
SO2+2H2O+CaCO3 (LIMESTONE) + 1/2O2 → CaSO4•2H2O(GYPSUM)+CO2
CHEMICAL PRINCIPLE: SO2 Absorption and Oxidation
WASTE WATER
ABSORBER
AIR
BOILERESP
GAS-GAS HEATER
STACK
LIMESTONE
GYPSUM DEWATERING
GYPSUM
FAN
LIMESTONE MILL
ABSORPTION SYSTEM GYPSUM RECOVERY SYSTEM
LIMESTONE PREPARATION SYSTEM
Babcock-Hitachi K.K. 33All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Hydro-Cyclone
OverflowAbsorber Slurry
Filtrate Receiver Vacuum PumpTo Absorber
Horizontal Belt Filter
Gypsum Recovery SystemGypsum Recovery System-- Belt Filter ApplicationBelt Filter Application
Water for recycling
By product Gypsum
Babcock-Hitachi K.K. 34All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Hydrocyclone
Vacuum Belt Filter
Byproduct Gypsum
Slurry feed
Direction
Vacuum
Gypsum Recovery SystemGypsum Recovery System-- Belt Filter ApplicationBelt Filter Application
Babcock-Hitachi K.K. 35All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
BY-PRODUCT GYPSUM QUALITY
PHOTO OF BYPRODUCT GYPSUM CRYSTAL
——0.32 %CaCO3
5~8—6.8pH
0. 03 %—0.001 %Na+
< 0. 25 %—< 0.05 %CaSO3 • 1/2H2O
> 95 %> 90 %98.8 %CaSO4 •2H2O
FOR WALL BOARD
FOR CEMENT
ACTUAL VALUEITEM
GENERAL REQUIREMENT IN JAPAN
Typical Requirement of Gypsum UsageTypical Requirement of Gypsum Usage
Babcock-Hitachi K.K. 36All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
NeutralOdour
Non-toxicToxicity
5-9pH
< 0.01Cl
< 0.06Na2O
< 0.10MgO
> 95%CaSO4 •2H2O
WhiteColor
< 0.50 %CaSO3 • 1/2H2O
< 10%H2O
EURO GYPSUM CriteriaITEM
VGB-M 701e:EURO GYPSUM: Quality Criteria and analysis methods
Requirement of Gypsum Quality in EuropeRequirement of Gypsum Quality in Europe
BY-PRODUCT GYPSUM QUALITY
Babcock-Hitachi K.K. 37All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Large Flue Gas Volume
High SO2 Content
High Fly Ash Loading
High Inlet Gas Temperature High Inlet Moisture
FGD Design Consideration for Lignite CoalFGD Design Consideration for Lignite Coal
*1 Gas Flow Rate shall be confirmed.
High Removal Efficiency
High Absorber SlurryTemperature
Babcock-Hitachi K.K. 38All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
BHK Unique FGD Technology: BHK Unique FGD Technology: Wet Stack SolutionWet Stack Solution
Wet stack on top of AbsorberWet stack on top of Absorber Stand alone Wet stackStand alone Wet stack
Features of “Wet Stack on top of Absorber”(1) Small-footprint
(2) Isolated from Absorber
Supported by Steel structure and
no load to absorber shell
Absorber
Wet Stack
Absorber
FRP Wet Stack
Babcock-Hitachi K.K. 39All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
FGD Waste Water Treatment FlowchartFGD Waste Water Treatment Flowchart(Example in Europe)(Example in Europe)
COAGULANT
Sludge Storage Tank
Filter Press
Discharge to River
Ca(OH)2 Polymer HCl
RawFGD
WasteWater
TMT-15 FeCl3
LamellaClarifier
Waste Product
SS, Heavy Metals Removal
NeutralizationTank 1
NeutralizationTank 2
FlocculationTank
Treated Waste Water Tank
Cooling water
Babcock-Hitachi K.K. 41All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
HITACHIHITACHI’’ss FGD Experiences in Europe FGD Experiences in Europe
(800MW x 4)(750MW x 1)(800MW x 2)
(800MW x 1)
(220MW x 1)
(556MW x 1)
Babcock-Hitachi K.K. 42All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
POWER’s 2011 Plant of the Year- Power Magazine (Oct 2011)
Project of the Year Award- Power Gen International 2011 in Las Vegas, USA
Reference Plant Industry RecognitionReference Plant Industry Recognition
Ameren Services (USA) / Coffeen Power Plant / No. 1, 2Ameren Services (USA) / Coffeen Power Plant / No. 1, 2
Babcock-Hitachi K.K. 43All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
4. Research & Development4. Research & Development
Babcock-Hitachi K.K. 44All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
R&D FacilitiesR&D Facilities
Desulfurization Test FacilityDesulfurization Test Facility Boiler-AQCS Pilot Test FacilityBoiler-AQCS Pilot Test Facility
Flue gastreatment facility
DESPCombustion facility
Coal Feed Rate 100~150 kg/hGas Flow Rate 1,000~1500 m3N/hAbs. dia: 480 mm
WFGD SCR
FF WESP
Burner
SCR
GGH
DESPPump
WFGD
Coal
BUFIDF
WESP
G/C
GGH
FF
CEM
4 Absorbers and 1 Reaction Tank Test Facilities
e.g.Absorber A Absorber B-Gas flow: 22,000m3N/h -Gas flow: 250m3N/h-SO2 conc.: 500 ppm -SO2 conc.: 20,000ppm-Abs. dia.: 680mm -Abs. dia.: 160mm
Absorber A Absorber B
Babcock-Hitachi K.K. 45All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
< Model Consideration >- Spray Droplets- Kinetic Momentum (Droplet/Gas)
Gas Distribution
Confirmation of Optimized Absorber internal arrangements by Flow Model to prevent the gas short-pass.
Flow Model Results
Track of Spray Droplet
Computational Flow ModelComputational Flow Model
Babcock-Hitachi K.K. 47All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
・Total Engineering Capability with Boiler Plant Engineering corresponding to various kinds of fuel
・Best-Mix of Japanese & European “State of the Art” Technologies
・Excellent Advanced Spray Tower Absorber Design featuring;a) Higher SO2 Removal Efficiency & Dust Removal Efficiencyb) Lower Gas Pressure Drop → Less Boost-Up Fan Capacityc) Excellent Liquid/Gas Contact → Less Recirc. Pump Capacityd) Higher Quality of By-Product Gypsum
→ Re-Use for Cement Additive and/or Wall Board Material
・Full Support by R&D Facility
・Proven FGD Technology and High Reliability
Special Features of BHK FGD SystemSpecial Features of BHK FGD System
Babcock-Hitachi K.K. 49All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
SCR ProcessSCR Process
・ 4NO + 4NH3 + O2 → 4N2 + 6H2O・ NO + NO2 + 2NH3 → 2N2 + 3H2O・ 6NO2 + 8NH3 → 7N2 + 12H2O
REACTION FORMULA
SCR ; SELECTIVE CATALYTIC REDUCTION
NOx
NOx
NOx
NH3
NH3
NH3
NOx
NOx
N2
N2
H2O
H2O
H2O
CATALYST
CLEANGAS
NH3
Babcock-Hitachi K.K. All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
Scheme of SCR SystemScheme of SCR System
BOILER
ECOEP DeSOx
FDF
STACK
NOx ANALYZER
BOILER LOAD
SIGNAL
NH3 STORAGE TANK
EVAPORATOR
ACCUMULATORFICMIXER
SCR ReactorNH3 injection
Catalyst
NH3 Storage & Supply
Babcock-Hitachi K.K. 52All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
SCR reactor
SCR Retrofit to Existing boiler
SCR Retrofit ExampleSCR Retrofit Example
APH
APHESP
ESP
Babcock-Hitachi K.K. 53All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
SCR Reactor SCR Reactor
SUPPORTING STRUCTURE
CASING
NH3 INJECTION GRID
INLET DUCT
MAIN MONORAIL
HOIST
OUTLET DUCT
CATALYST BLOCK
Babcock-Hitachi K.K. 54All Rights Reserved Copyright (C) 2012, Babcock-Hitachi K.K.
CATALYST BLOCKCATALYST UNIT
CATALYST ELEMENT
Plate Type CatalystPlate Type Catalyst