Transcript PowerPoint Presentation - MicroMist Scrubber Technology

MicroMistTM Scrubbing Systems
Wet Scrubber
Advanced Scrubbing Technology
General Product Description
About EnviroCare International
• Formed in 1980 as a Pollution Control
Engineering Systems and Services Company
• MicroMist Scrubbbing Technology Applied all
Over the World in Pulp & Paper, Power, Steel,
Municipal Waste and Many More
• In-house Engineering and Manufacturing
Expertise
• Over 15 Patents on Atomization and Pollution
Control Technologies
EnviroCare
MicroMist™
Scrubber
Benefits of MicroMistTM Scrubbing
Technology
• Lower Energy Consumption. MicroMist Scrubber
Typically Operates With Less Than 25” W.C. of Total
Pressure Drop
• Lower Equipment Costs
• High Capture Efficiencies on Acid Gasses &
Submicron Particulate
• High Capture Efficiencies on Condensables
• Retrofit Existing Equipment = Minimal Outage Time
• Proven Results!
What’s Different?
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Sequence of Components and “Events”
Quenching and Sub-Cooling
Patented Scrubbing with Fine Droplets
Use of Proprietary Dual-Orifice Impingement
(DOI) Trays and Highly Efficient Mist Eliminators
with Irrigation
Lower System Pressure Drop
Ability to Scrub Fine Particulate, Acid Gases,
Condensables, and Heavy Metals in “One System”
Water Management and Experience
Operational Flexibility for Varying Gas Flow
DIRTY
SCRUBBER
EXHAUST
Conventional Scrubbers
PROCESS
EHAUST
•Low Particulate Collection
Efficiency
WATER
•Inefficient Use of Energy (>70”
W.C.)
SEPARATOR
STAGE
•Atomization For Particulate
Collection Affects Draft
•Poor Turn-Down
VENTURI
STAGE
•Little Effect on Condensables
SATURATED
GASSES
•Difficult Solids Control
DRAIN
DRAIN
Elements of
Conventional Scrubber
DIRTY
SCRUBBER
EXHAUST
PROCESS
EHAUST
•1 - Liquid is Atomized in Venturi
With Fan Draft
WATER
•Inefficient Atomization Results in
Poor Liquid/Gas Contact and
Reduced Particulate Collection
•Optimum Droplet Size For
Particulate Collection is Not
Generated
SEPARATOR
STAGE
VENTURI
STAGE
1
SATURATED
GASSES
DRAIN
DRAIN
Elements of
Conventional Scrubber
•2 - Gases Are Not
Quenched to Saturation
Until After Venturi
•High Chance of Vapor
Trapped Particles Bleeding
Through Venturi, Resulting
in Highly Visible
Emissions
DIRTY
SCRUBBER
EXHAUST
PROCESS
EHAUST
WATER
SEPARATOR
STAGE
VENTURI
STAGE
2 SATURATED
GASSES
DRAIN
DRAIN
Flue
Gas
Clean
Gas
MicroMistTM
Scrubber
•High Particulate Collection Efficiency
(>99.5%)
•High Capture Efficiency of Acids &
Condensables (>98.9%)
•High Capture Efficiency of Heavy Metals
(95% - 99% + )
•Efficient Use of Energy (System ∆P <25”
WC)
•Atomization for Particulate Collection
Independent of Draft
•Excellent Turn-Down
•Solids Control & Segregation
Stage 1: Quench
Flue
Gas
Clean
Gas
• Quenching Upstream of True
Venturi Tubes
• 95% Removal of Particulate
• Removal of SO2 & HCL
• Separation of Drain Water
•< 1” WC Pressure Drop
1
MicroMistTM Scrubber Elements
Stage 2: Sub-Cooling
Flue
Gas
Clean
Gas
• Conditioning
• Agglomeration
• Absorption of acid gasses
• Removal of SO2 & HCL and
PM > 1 micron
2
MicroMistTM Scrubber Elements
Flue
Gas
Clean
Gas
3
Stage 3: Patented
True Venturi Stage
• Condensation and Agglomeration of
H2SO4, Fumes and Sub-Micron
Particulate
• Internal Throat Atomizer to Control
Differential Pressure With Varying
Process Loads (Control to ~16” WC)
• Correct Liquid Droplet Atomization
for Maximum Collection Efficiency
• Venturi Design Promotes Multi-Stage
Liquid/Particle Differential Velocities
for Sub- Micron collection
• Separate Drain for Maximum Liquor
Management and PH Control
MicroMistTM Scrubber Elements
Gases and Submicr on Par ticul ate
100
86
velocity (%)
Col lection Droplets
ga se s p ass ing
th rou gh dro ple ts
71
57
dr opl ets pas sin g
th rou gh gas es
43
29
14
Dim e ns ion along Ve ntur i Ele m e nt - units
0
VENTURI THROAT
0
1
2
RECOVERY CONE
3
4
5
6
Venturi Tubes are “Ideal” Venturi Design Incorporating Maximum
Particle/Droplet Collisions and Pressure Recovery
Patented MicroMistTM Venturi Stage
Vertical Centrifugal Pumps
Atomization Through HydroMist
Nozzles* at the Inlet of Each Venturi
Tube and Independent of Throat Velocity.
Internal Throat Atomizer** Modulates
(Pump VFD) To Maintain Specified
Pressure Drop Across This Stage
*US Patent #5,279,646
**US Patent #6,719,829
Stage 4: Separation
Flue
Gas
Clean
Gas
4
• High Efficiency Separator Stage
Combined of Dual Orifice
Impingement (DOI) trays and a Mist
Eliminator
• “Flushing” Removal of Dirty Water
Droplets With Irrigation And
Backwash Spray Nozzles
• Prevents Carry Over of Water into
Scrubber Outlet
MicroMistTM Scrubber Elements
Additional Features
MicroMistTM Scrubber
• Maximize Re-use Water With
Recirculation Tanks
• Minimize Fresh Make-up
Water
• Experience with PH Control
• Steady ∆P Across All Process
Operating Conditions
• No Hassle Maintenance
• Proven Results With All Fuel
Sources (Coal, Oil, NCG)
• “One System” Air Pollution
Control Option
•UL Listed Control Enclosures
With Fully Automated Control
Capabilities
Flue
Gas
Clean
Gas
MicroMistTM
Scrubber
•High Particulate Collection Efficiency
(>99.5%)
•High Capture Efficiency of Acids &
Condensables (>98.9%)
•High Capture Efficiency of Heavy Metals
(95% - 99% + )
•Efficient Use of Energy (System ∆P <25”
WC)
•Atomization for Particulate Collection
Independent of Draft
•Excellent Turn-Down
•Solids Control & Segregation
Emissions Control
Technology Comparison
PM
PM
(front)
(back)
New MicroMistTM
Scrubber
x
x
x
x
ESP
x
x
x
some
x
x
x
x
x
x
-
some
-
ESP & SO2 Scrubber
ESP, SO2 Scrubber &
WESP
Baghouse
Baghouse, dry lime
injection
SO2 H2SO
4
Piloting the
MicroMistTM Scrubber
• Pilot testing emissions control applications is the
most effective way to predict performance,
operating conditions and chemical
consumptions.
• Pilot units must be accurately “scalable” to
ensure correct and predictable result
• Pilot units must be modular to allow simple
addition and subtraction of process stages
EnviroCare Pilot GA
Test Capacity = 6,000 ACFM
Production 8” Venturi Tube
EnviroCare Pilot GA
Incorporates our Patented
StarTM WESP Technology
MicroMistTM Scrubber
Field Testing Pilot Equipment
2
1
SUB-COOL
QUENCH
3
MicroMistTM
VENTURI
EME
4
SEPARATOR
ALL MOUNTED ON A FLAT-BED FOR CONVIENENCE
Why try EnviroCare’s MicroMistTM
Scrubber Pilot?
• Cost Effective Method to Prove Efficiency
• All Equipment Arrives on Site Together
• Easy, Convenient, and Compact
• EnviroCare Engineering Assistance
• Includes All Required Instrumentation
• Includes Production 8” Venturi Tube in MMV Stage
• Test Ports in Multiple Locations
• EnviroCare Field Service Technicians
• “One System” Solution To Pollution Control
ANY QUESTIONS?
Email us: [email protected]