worldwide pollution control associationwpca.info/pdf/presentations/il2011/dry fgd operations by...
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![Page 1: Worldwide Pollution Control Associationwpca.info/pdf/presentations/IL2011/Dry FGD Operations by Vince...Worldwide Pollution Control Association IL Regional Technical Seminar September](https://reader031.vdocument.in/reader031/viewer/2022011800/5ad39edf7f8b9a665f8dfa1a/html5/thumbnails/1.jpg)
Worldwide PollutionControl Association
IL Regional Technical SeminarSeptember 13-15,2011
Visit our website at www.wpca.info
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Page 1 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Dry FGD Operations Reinhold Environmental LTD WPCA Illinois Regional Technical Seminar Siemens Environmental Systems & Services
September 15, 2011
Normal, IL
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Page 6 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Spray Dryer Absorber Dry Scrubbing Systems
PEBBLE LIME
LIME SILO
LIME FEEDER LIME
SLAKER
LIME SLURRY
GRIT SCREEN
TO GRIT DISPOSAL LIME SLURRY
STORAGE TANK
AGITATOR
LIME SLURRY FEED PUMPS
DUST COLLECTOR
SOLIDS DISCHARGE
TO I.D. FANS SPRAY DRYER
ABSORBER FABRIC FILTER
FLUE GAS FROM BOILER
ATOMIZING AIR
RECYCLE TANK RECYCLE
PUMP
DILUTION WATER
SLAKING WATER
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Page 7 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Category Pollutants Emissions
1. Coal Fired Unit designed for coal ≥ 8,300 Btu/lb
a. Total Particulate Matter (PM) 0.030 lb/mmBTU or 0.30 lb/MWh
or or
Total non-Hg HAP metals 0.000040 lb/mmBTU 0.00040 lb/MWh
or or
Individual HAP metals: Antimony (Sb) Arsenic (As)
Beryllium (Be) Cadmium (Cd) Chromium (Cr)
Cobalt (Co) Lead (Pb)
Manganese (Mn) Nickel (Ni)
Selenium (Se)
0.60 lb/TBtu or 0.0060 lb/GWh 2.0 lb/TBtu or 0.020 lb/GWh
0.20 lb/TBtu or 0.0020 lb/GWh 0.30 lb/TBtu or 0.0030 lb/GWh 3.0 lb/TBtu or 0.030 lb/GWh
0.80 lb/TBtu or 0.0080 lb/GWh 2.0 lb/TBtu or 0.020 lb/GWh 5.0 lb/TBtu or 0.050 lb/GWh 4.0 lb/TBtu or 0.040 lb/GWh 6.0 lb/TBtu or 0.060 lb/GWh
b. Hydrogen Chloride 0.0020 lb/TBtu or 0.020 lb/MWh
or or
Sulfur Dioxide (SO2) 0.20 lb per MMBtu or 2.0 lb per MWh
c. Mercury (Hg) 1.0 lb/TBtu or 0.008 lb/GWh
EPA/MACT Proposed Emission Limits Existing EGUs
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Page 8 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Category Pollutants Emissions
1. Coal Fired Unit designed for coal < 8,300 Btu/lb
a. Total Particulate Matter (PM) 0.030 lb/mmBTU or 0.30 lb/MWh
or or
Total non-Hg HAP metals 0.000040 lb/mmBTU 0.00040 lb/MWh
or or
Individual HAP metals: Antimony (Sb) Arsenic (As)
Beryllium (Be) Cadmium (Cd) Chromium (Cr)
Cobalt (Co) Lead (Pb)
Manganese (Mn) Nickel (Ni)
Selenium (Se)
0.60 lb/TBtu or 0.0060 lb/GWh 2.0 lb/TBtu or 0.020 lb/GWh
0.20 lb/TBtu or 0.0020 lb/GWh 0.30 lb/TBtu or 0.0030 lb/GWh 3.0 lb/TBtu or 0.030 lb/GWh
0.80 lb/TBtu or 0.0080 lb/GWh 2.0 lb/TBtu or 0.020 lb/GWh 5.0 lb/TBtu or 0.050 lb/GWh 4.0 lb/TBtu or 0.040 lb/GWh 6.0 lb/TBtu or 0.060 lb/GWh
b. Hydrogen Chloride 0.0020 lb/TBtu or 0.020 lb/MWh
or or
Sulfur Dioxide (SO2) 0.20 lb per MMBtu or 2.0 lb per MWh
c. Mercury (Hg) 4.0 lb/TBtu or 0.04 lb/GWh
EPA/MACT Proposed Emission Limits Existing EGUs
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Page 9 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Mercury and HAP Control w/ SDA
Particulate Collection is Downstream of FGD Scrubber Fluegas is cooled to 170-180oF Hg / HAP condensation onto larger particulate Fine aerosols/particulate collected on filter cake
Vapor Phase SO3 is absorbed by slurry droplets Condensed sulfuric acid mist is collected in FF filter
cake PAC Injection upstream of SDA Vapor SO3 absorbed by SDA slurry SDA provides PAC /Fluegas Mixing prior to FF
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Page 10 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Dynegy Baldwin Station
Unit 3 Baldwin, Illinois
• PRB Coal • 627 MW (Gross) • 2 x 50% SDAs (54 ft Diameter) • 2 x Jet VIP PJFFs (8 Compartment) • SO2 Inlet: 1.0 lb/mm BTU • SO2 Emission: 0.08 lb/mm BTU • FG Flow Rate: 2,496,000 @ 322oF
SDA & Fabric Filter Technology Dynegy Baldwin Unit 3
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Page 11 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Dynegy Baldwin Unit 3
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Page 12 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Dynegy Baldwin Unit 3 Layout
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Page 13 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Dynegy Baldwin Design Basis
Process Parameter Units Design Flue Gas Flow Rate Unit 1 Unit 2 Unit 3
Lb/hr 7,649,000 7,341,000 ACFM 2,478,841 2,464,000
Flue Gas Temperature oF 285 322
Flue Gas Composition SO2 Lb/hr 6,090 6,096 HCl Lb/hr 72 144
Hg Lb/hr .072 0.0672 Fly Ash (ESP On) Lb/hr 4,980 5,730
Fly Ash (ESP Off) Lb/hr 40,000 50,000
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Page 14 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Dynegy Baldwin Emission Requirements
Process Parameter Acceptance Criteria SO2 Removal/Emissions
0.080 lb/MMBtu (30 day average) 0.100 lb/mmBtu (1 hour average)
Solid Particulate Emissions 0.0120 lb/MMBtu (using EPA method 5)
Mercury Emissions 0.0080 lb/GWh
Opacity less than 10%
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Page 15 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Flue Gas In
Two-Fluid Nozzles
Perforated distribution plate &
flow straightner
Solids discharge
hopper
Flue Gas to PJFF
Two-phase reaction process
Two Fluid Nozzle Spray Dryer Absorber
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Page 16 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Lime Slurry
Atomizing Air
Shroud Air SDA Roof
SDA Perforated Distribution Plate
Feed Lance Assembly
Two–fluid Nozzle
Nozzle Shroud Atomizing Air Slurry Feed
Two–Fluid Nozzle
Air Reservoir Inserts
Lance
Two Fluid Nozzle/Lance Assembly
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Page 17 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Internal Mix Two Fluid Nozzle
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Page 18 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Spray Dryer Absorber Technology Two Fluid Nozzle Operation - Video
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Page 19 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Spray Dryer Absorber Technology Nozzle Array
Extensive Array means: Flue Gas turndown in a
single absorber is easily attained while maintaining performance (Typically 30%-100% load)
Nozzle Maintenance is
flexible Maximum Flue Gas
coverage
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Page 20 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Spray Dryer Absorber Technology Nozzle Station
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Page 21 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Spray Dryer Absorber Technology Two Fluid Nozzle Lance Removal - Video
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Page 22 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Auxiliary Equipment – Reagent & Recycle Systems
Lime Slaking Systems Vertical Mill vs. Detention Type Process Parameters Maintenance
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Page 23 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Vertical Lime Slaking System
Lime/Water enters top of Mill Slurry Overflows Mill to Separator
Tank Mill Pump Circulates Slurry
w/oversize material from Separator to bottom of Mill
Smaller Particles/Slurry overflow Separator to Transfer Tank
Larger Capacity, > 7 tph Grinds/Consumes Inerts Higher Power Consumption
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Page 24 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Detention Type Slaking System
1 of 2 Agitated Chambers Water/Lime Ratio controlled Vibrating Grit Screen 20 wt% Slurry produced
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Page 25 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Lime Slaking Systems
CaO + H2O → Ca(OH)2 + Heat Pebble Lime or Quick Lime Surface Reaction – Ca(OH)2 wash off the Pebble Lime Surface High Reaction Temperature ( 180o-190oF) Provides Smaller More Reactive
Particle (5 micron)
Process Factors Lime Reactivity – ASTM C110-7 (Temperature Rise) Water Temperature Water Quality (< 500 ppm SO3, SO4, HSO3) Particle Size
Slaker Control Water Lime Ratio
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Page 26 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
DFGD System Process Water Requirements
Seal Water Total Suspended Solids (Hard Water): ≤ 50 ppm
Total Suspended Solids (Soft Water): ≤ 50 ppm
Maximum Particle Size: 40 μm
Slaking Water Inlet Temperature: ≥ 60°F
Total Dissolved Solids: ≤ 1,000 ppm
Total Sulfate, Sulfite, Bisulfite: ≤ 500 ppm
Total Suspended Solids: ≤ 50 ppm
Dilution Water (Recycle Ash) pH: 6 < pH < 8.5
Chlorides: ≤ 1,000 ppm
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Page 27 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Baldwin Vertimill Lime Slaker
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Page 28 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Reaction Product Surge Bin Silo live bottom Redundant Mix Tank Redundant Grit Screen Recycle Slurry Storage Tank(s)
Recycle Slurry Preparation Systems
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Page 29 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Recycle Slurry Agitator
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Page 30 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Slurry Handling
Centrifugal Pumps Casing Liners Hardened Impellers Automatic flush/Drain Slurry Recirculation Loops Maintain 4-10 fps Pipe material Fiberglass with abrasion resistant liner Heavy wall carbon steel
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Page 31 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Slurry Pumps
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Page 32 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Two fluid Nozzle SDA Advantages
Individual nozzles can be easily maintained while keeping the system online
Nozzle maintenance is straightforward and does not require special tools or training
Plug flow design ensures an even distribution of flow through the SDA vessel and allows for large single absorbers
Overall design is simple and robust which reduces maintenance issues that can be encountered with expensive mechanical systems
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Page 33 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Trouble Shooting: SDA
SDA Hopper Temperature
SDA Hopper temperate should be close to equal to the Flue Gas Outlet temperature
High temperature differential indicates the presence of a dirty nozzle
Nozzle Pressure Loss
Monitor pressure of clean nozzle
As nozzle gets dirty, pressure will increase
Use this to determine which nozzle is dirty
TE TE
TE
SDA Hopper
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Page 34 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Intermediate Pressure Pulse Jet Fabric Filter
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Page 35 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Intermediate Pulse Jet Fabric Filter
Twp 50% Capacity Casings 8 Compartments/Casing 1,080 Bags per Compartment (18,240) total) 5.25 in dia. x 315 in long PPS Felt 12 vertical wire carbon steel support cages
3.5 fpm Filtering Velocity On-line Cleaning
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Page 36 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Intermediate Pressure Pulse Jet Fabric filter
1-023
SIDE VIEW
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Page 37 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
PJFF Layout
TOP VIEW
1-020
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Page 38 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
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Intermediate Pulse Pressure, 35 psig
Designed for Long Bags (>10 m)
On-Line cleaning
Low Compressed Air Consumption
Long Bag Life
Ability to take compartments offline for maintenance
Fabric Filter Technology Jet VIP™ Pulse Systems
CLEAN GAS OUTLET
MANIFOLD PIPES
TUBESHEET
HEADER MOUNTED PULSE VALVES
FILTER BAGS AND CAGES
GAS DISTRIBUTION BAFFLE
DIRTY GAS INLET
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Page 39 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
SESS Fabric Filter Design Advantages
Jet VIP Gas Flow Distribution Split Gas Entry Low “Can” Velocity Minimizes Re-Entrainment On-Line Cleaning Low Cleaning Frequency
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Page 40 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
SESS Fabric Filter Design Advantages
VARIABLE HOLE SIZE MANIFOLDS WITH NOZZLES
TUBE SHEET 5” DIA. HOLES ON 7” CENTERS
LARGE CAPACITY AIR HEADER
3 1/2” DIA. PULSE VALVES WITH SOLENOIDS
5” DIA. BAGS
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Page 41 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
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Section II: PJFF Physical Arrangement & Details of Equipment
Pulse Valve
Solenoid Valve
Pulse Air HeaderRemovable Roof Door
Manifold Pipe
Manifold Pipe
Tubesheet
Filter Bag & Cage
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Page 42 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
Section II: PJFF Physical Arrangement & Details of Equipment
Pressurized
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Page 43 © Siemens 2011. All rights reserved.
WPCA Illinois Regional Technical Seminar
September 15, 2011
SESS Fabric Filter Design Advantages
Compressed Air Header Multiple Headers Per Compartment
(Typically 4)
Multiple Pulse Valves Per Header Pressure Regulated to 35 psig Safety Relief Valve
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WPCA Illinois Regional Technical Seminar
September 15, 2011
O&M Impact
Filter Bag & Cage Installation Positive Seal Formed By SS Snap Ring Sewn Into the Bag, Seated Against the Tubesheet. “No-Tools” Installation
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WPCA Illinois Regional Technical Seminar
September 15, 2011
SESS Fabric Filter Design Advantages
Filter Bag Material (SDA Service) PPS (Utility) Fiberglass w/ PTFE
Cages Two Piece Carbon Steel Wire 16 Vertical Wires
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WPCA Illinois Regional Technical Seminar
September 15, 2011
SESS Fabric Filter Design Advantages
Roof Door & Penthouse Enclosure Roof Door Access
No Confined-Space Entry Compartment Ventilation
System Not Required 2-Piece Cages
Fully Ventilated & Lighted Enclosure
All Roof Equipment & Access Within
Enclosure
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WPCA Illinois Regional Technical Seminar
September 15, 2011
Thank You for Your Attention!
Siemens Environmental Systems & Services
This Presentation contains Information that is Proprietary and Confidential
and Solely owned by Siemens