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Advanced Gas Cooling, Dry Grinding, Feeding & Injection Technologies for the Environment
1Experience is our Technology℠
Experience is our Technology℠
STM Group
2
STM has over 500 systems installed worldwide, between feeders, mills and classifiers.
STM Experience
STM has a presence on all 5 continents and in all business sectors that use mills feeders and dynamic classifiers.
Worldwide Presence
With the most innovative solutions in their respective class, STM is a supplier of disruptive technology.
Innovative Products
The performance of all STM products and systems is guaranteed, whether it be production, particle size, or efficiency.
Guaranteed Performance
Co-Developer of Sodium Dry Injection TechnologyMarket Leadership
‣ In the 90s, STM led the world in dry grinding for gas cleaning applications by co-developing a novel gas cleaning approach with a world-leading chemical supplier.
‣ The system uses ground Sodium Bicarbonate for cleaning hot exhausts.
3
STM Serial No. 1. Reggio Emilia, Italy
Continuing R&D Market Leadership
‣ There is no company with more mills installed on Sodium-based gas cleaning systems.
‣ Today’s STM is regarded as the premier supplier for grinding Sodium-based reagent with the most advanced milling know-how and the most accurate weigh-feeding systems.
4
STM Serial No. 207. The Latest Design
Injection Know-howExperience
‣ STM EcoSystems division may be small, but we boast personnel with over 100 years of combined experience in gas treatment systems.
‣ We utilize this experience and the latest computational models to correctly predict system performance.
5
CFD Examples of Reactor Designs
0.0 12.0 24.0 36.0 48.0 > 60.0Total Velocity (ft/s)
Airflow SciencesCorporation R
Design 3 Option 1 Model ResultsTotal Velocity - Centerline Front Elevation Throat Zoom
Bold Eco - Infratech Reactor Modeling June 11, 2014
Figure 4
L-14-BEX-03-1
0.0 15.0 30.0 45.0 60.0 > 75.0Velocity Magnitude (ft/s)
Airflow SciencesCorporation R
Velocity Magnitude - All Poppets OpenSide View - Model Domain
BoldEco - Versa Maps Filter Modeling November 19, 2013
Figure 3
L-13-BEH-02
Air Pollution Control OEMs and End UsersExperience
6
Grinding, Dosing and Injection Product RangeGas Cleaning Equipment
7
Sorbent Reagent Systems
BicarMill®Full-feature Grinding Mill,
Including Optional Soundproof Enclosure
JCF Grinding Mill for Retrofit Applications
JCF-FGrinding Mill with Single
Filtration, Single Machine, 5 Injection Lines
Compact Compact Mill, Simple and Economical
MF In-Line Crusher/Delumper
Feeding & Injection Systems
MDS-AC Micro-doser, Reagent Injection with Compressed Air
MDS-P Doser, Reagent Injection with Blower
MDS-VS Doser, Reagent Injection with Blower and Cross-flow Valve
MDD Double Doser
MDS-A Doser, Slurry Reagent Injection
BD Distributor, Multi-outlet
OV OptiVap Spray Cooling and Chemical Injection
STM Systems are Approved by SolvayApprovals
8
Summary: We note that 90% of SOLVAir® clients are actually satisfied with the use of machinery produced by the following companies: (In alphabetical Order): STM Every customer of grinding systems planning on using SOLVAir® Solutions in a plant must contact one of these suppliers. SOLVAY underlines that its objective is not to promote one supplier over another. The final choice should be carried out by choosing, in all cases, the offering that is best suited to the characteristics of the project and to the expectations of the main contractor.
Date : 07/03/2013
Author : BDJ Reference document SOLVAir® DR 063
Controller : MTI, PGT
Sodium Bicarbonate Grinding Systems Manufacturers Contact List
Diffusion : free
The information contained in this document is given in good faith and by way of information at the time of publishing. SOLVAY does not engage its responsibility. The use of our products is for the treatment of flue gases, excluding all others uses and applications. The buyer is required to monitor and respect, in its sole liability, the conditions under which our products are stored and used in its territory, to provide all required information to the user, and to respect all existing patents and all regulations applicable to our products and to its activity.
Sodium bicarbonate grinding
Grinder manufacturers CONTACT LIST
DR SOLVAir® 063 Revision : 4 Page 1/2
©SOLVAY 2013
Note: Other suppliers recommended by SOLVAir® are NOT shown on this slide
Optimal System for Each ApplicationGas Cleaning Systems
9
Combustion ProcessSystem Type and Typical Reagent
Grinding System Dosing and Injection System
Technical Grade Sodium Bicarbonate Trona Activated
Carbon
Ready to Use (Lime,
Limestone, etc.)
Sodium Bicarbonate +
Activated CarbonIndustrial and Hazardous
Waste Incineration • • • •
Biomass • • • •Cement • • •Power • • •
Water Treatment • • •Metals Recovery Furnace • • • •
Cremation • • • •General Combustion: Heavy
Fuel Oil and Natural Gas • • •
Municipal and Hospital Waste Incineration • • • •
Steel and Foundries • • • •Glass • • •
Typical Reductions Possible Using Dry ScrubbingEmissions Reductions
10
Capture Mechanism Pollutant (mg/Nm3) EmissionsFabric Filter Particulate (mg/Nm3) <1
Sodium Bicarbonate
HCl (mg/Nm3) <5SOx (mg/Nm3) <2NOx (mg/Nm3) N/AHF (mg/Nm3) <4
Activated Carbon
Heavy Metals (mg/Nm3) <0.05
Dioxins/Furans (ng/Nm3) <0.05
Cadmium (mg/Nm3) <0.001
Mercury (ng/Nm3) <0.001
Characteristics of Various MethodsGas Cleaning Comparison
11
Process Sodium Sorbent Carbon Calcium Sorbent
Reagent Sodium Bicarbonate Trona Activated
CarbonLow Temp
Hydrated LimeHigh Temp
Hydrated Lime
Stoichiometric Ratio 1.2-1.4 1.8-2.5 Iodine Index 600-1050 mg/g 1.2-1.8 3.5-6.0
Gas Temperature 140-380 °C 140-380 °C 150-180 °C 80-120 °C 200-300 °CReaction Time >2 Sec >4 Sec On Filter On Filter On Filter
Weight After Reaction 30% HCl16% SO2
30% HCl16% SO2
- 50% HCl83% SO2
50% HCl83% SO2
HCl Efficiency >99% >95% - >95% 50-90%HF Efficiency <5mg/Nm3 <10mg/Nm3 - <10mg/Nm3 -SO2 Efficiency >98% >90% - >90% 80%
Heavy Metals Efficiency - - Excellent - -Dioxin/Furan Efficiency - - Excellent - -
Waste Recyclability Yes Yes Yes No No
Hammermills for Gas Cleaning ApplicationsSTM Milling Systems
12
The Basic JCF DesignSTM JCF Hammer Mill
‣ Full-feature classifying mill coupled to a transport air fan.
‣ Ideal for single-point gas cleaning plants and for retrofit applications.
‣ Operational advantages: ‣ Maximum energy efficiency ‣ Low noise emissions ‣ Minimal maintenance needs ‣ Compact, small space requirement ‣ High reliability and quality ‣ Ease of maintenance
13Basic JCF Mill
14
Model Installed Power
Absorbed Power Acid Gas GUARANTEED
Particle Size Capacity* Air Flow Pressure Noise
Rotor Size kW kW Type Range µm Range kg/h m3/h mm H2O dbA
300 18.4 16.6HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
10-250
10-150800 500 <75
400 29.2 26.3HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
40-450
30-3001500 800 <75
630 64.2 57.8HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
80-1000
60-6002700 800 <75
800 98.0 88.2HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
100-1400
70-9004700 1000 <75
1000 129.0 116.1HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
100-1800
70-12006000 1000 <75
1250 205.0 188.7HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
120-3000
80-20009750 1000 <75
1500 284.0 261.2HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
150-4200
100-280013500 1000 <75
*Capacities Stated for Sodium Bicarbonate at GUARANTEED particle size distribution
Technical Data JCF MillEquipment Specifications and Capacity
JCF Hammer MillOperational Schematic
15
JCF/JCFF MillAirflow Schematic
16
Ambient Air
Mill Exhaust
Sorbent Propulsion
Mill with Pneumatic Cylinder Removal AssistJCF 300 Compact Mill
17
Mill with Pneumatic Cylinder Removal AssistJCF 400 Compact Mill
18
Filter-receiver + Mill for Indirect DosingJCFF Indirect Injection Mill
‣ Full-feature classifying mill coupled to a transport air fan and a filter/receiver.
‣ Ideal for complex gas cleaning plants with multiple injection points.
‣ Operational advantages: ‣ Modular and flexible arrangement ‣ Stockpile applications possible ‣ Ideal for multi-injection points ‣ Useable with multiple dosing systems ‣ Replaces multiple mills for cost savings
19
JCFF Mill A - Dosing System B - Mill C - Filter/Reciever D - Suction Fan
JCFF Series Mill with Multiple Dosing UnitsJCFF Indirect Injection
20
JCFF w/Multiple Dosers A - Dosing System B - Mill C - Filter/Reciever D - Suction Fan E - Rotary Valve F - Double Dosing System G - Eductor Venturi H - Regenerative Blower I - Mill to Filter Duct L - Filter to Fan Duct M - Air Recycle Loop N - Injection Point Piping
Mill with Pneumatic Cylinder Removal Assist Mill Closed
JCF 630 Compact Mill
21
Mill with Pneumatic Cylinder Removal Assist Mill Open
JCF 630 Compact Mill
22
Enclosed Smart Mill with 8400 Hour Uptime GuaranteeSTM BicarMill Technology
‣ Full-feature classifying mill coupled to a transport air fan, complete with custom enclosure and controller.
‣ Guaranteed minimum non-stop uptime operation of 8400 hours.
‣ Operational advantages: ‣ Packaged machine installation ‣ No-buildup guarantee ‣ Lowest noise emissions ‣ Automatic operation ‣ Low maintenance - all external access ‣ High reliability and quality ‣ Optional remote alarming feature
23
BicarMill Smart Mill
Smart Bicarbonate HammermillFeatures of BicarMill
24
Auto-greasing Operation
Built-in Temperature SensorBuilt-in Vibration SensorBuilt-in Airflow Sensor
Automatic Build-up Control 8400 Hour
NON-STOP GUARANTEE
Equipment Specifications and CapacityTechnical Data Bicarmill
25
Model Installed Power
Absorbed Power Acid Gas GUARANTEED
Particle Size Capacity* Air Flow Pressure Noise
Rotor Size kW kW Type Range µm Range kg/h m3/h mm H2O dbA
300 18.4 16.6HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
10-250
10-150800 500 <75
400 29.2 26.3HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
40-450
30-3001500 800 <75
630 64.2 57.8HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
80-1000
60-6002700 800 <75
800 98.0 88.2HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
100-1400
70-9004700 1000 <75
1000 129.0 116.1HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
100-1800
70-12006000 1000 <75
1250 205.0 188.7HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
120-3000
80-20009750 1000 <75
1500 284.0 261.2HCl
SO2
d90<30µm - d50<10µm
d90<20µm - d50<5µm
150-4200
100-280013500 1000 <75
*Capacities Stated for Sodium Bicarbonate at GUARANTEED particle size distribution
Smart Mill with Automatic Control SystemBicarMill 630
26
Internal View of Feeder and Mill with Pneumatic Open AssistBicarMill 630
27
Internal View of Classifier and Mill with Hoist AssemblyBicarMill 630
28
Rotor Disc Removal with Hoist AssemblyBicarMill 630
29
Typical Installation on Dry Injection SystemBicarMill Installation
30
Dual System on Dry Injection SystemBicarMill Installation
31
Self-classifying, Compact DesignSTM Compact Mill
‣ Compact, self-classifying mill coupled to a transport air fan. The self-classifying design makes it a good choice for applications where particle size is not critical or where sorbent stoichiometry or acid gas efficiency requirements are low.
‣ Ideal for medium/small gas cleaning plants and for low-cost retrofit applications.
‣ Operational advantages: ‣ Low energy consumption ‣ Minimal maintenance needs ‣ Compact, small space requirement ‣ Ease of installation ‣ Automatic operation
32Compact Mill
Equipment Specifications and CapacityTechnical Data CompactMill
33
Model Installed Power
Absorbed Power Capacity* Air Flow Pressure Energy
Req. Noise
Type/Size kW kW Range kg/h m3/h mm H2O kW/Ton dbA
Compact 280 18.4 14.8 5-40 800 500 60-100 <75
Compact 400 29.2 23.5 10-120 1500 800 55-85 <75
Compact 600 64.2 51.5 20-450 2700 800 52-85 <75
*Capacities Stated for Sodium Bicarbonate
Self-classifying, Compact DesignCompact Mill
34Compact Mill 600
Enclosed Compact Mill with Feeder DosingCompact Mill - EasyBox
35Compact 400 Easy Box Showing Dosing System
Enclosed Compact Mill with Feeder DosingCompact Mill - EasyBox
36Compact 400 Easy Box Showing Internals
Enclosed Compact Mill with Feeder DosingCompact Mill - EasyBox
37Compact 400 Easy Box Showing Internals
In-line Material Crusher with Online MaintenanceMF Lump Breaker/Crusher
‣ Compact, in-line clinker crusher/delumper with online maintenance capabilities.
‣ Capable of crushing a full-size clinkers down to 1” particles.
‣ Can be installed upstream of dust airlocks and conveying systems in boiler and just collector applications.
‣ Operational advantages: ‣ Low energy consumption ‣ Inline maintenance - no need for removal ‣ Compact, small space requirement ‣ Ease of installation ‣ Heavy-duty construction
38MF Series Lump Breaker
In-line Material Crusher with Online MaintenanceMF Lump Breaker/Crusher
39
Unit Deactivated for Maintenance
Unit Online and Operational
Metering Feeder Dosers for Gas Cleaning ApplicationsSTM Dosing Systems
40
MDS AC – 50
High-Accuracy Powder Feeder Dosing TechnologySTM Weigh-Feeder Systems
‣ Solves the problem of accurately metering free-flowing powders by monitoring the flow of sorbents and activated carbon into the gas stream.
‣ Can be used for any application that uses powders, such as dry scrubbers and duct injection systems.
‣ Accuracy twice that of competitive commercial units.
‣ Operational advantages: ‣ Maximum energy efficiency
‣ High accuracy ‣ Minimal maintenance needs
‣ Compact, small space requirement ‣ High reliability and quality
‣ Ease of installation
41
Micro-Dosing Unit
Elements of Our Feeder Dosing SystemsVolumetric Components
‣ Modular dosing system elements allow the interchange of different elements to achieve different injection rates
‣ Variation of the dosing screw design based on the type of material being metered: ‣ Type A: Solid metering screw for non-
compressible, high specific gravity material ‣ Type B: Open (spring) metering screw for
compressible, low specific gravity material
42
Type B Spring ScrewType A Solid Screw
Agitator Element
Elements of Our Feeder Dosing SystemsControl Components
43
Integral Air Preparation Unit
Surge Hopper Level Sensor
Transport Air Flow Meter and
Pressure Transducer
Weight Scale With Vibrator
High-accuracy Gear Reducer
8400 Hour NON-STOP GUARANTEE
Simple Feeder Dosing SystemMDS MicroDoser
44
Micro-Dosing Unit
MDS Doser 1 - Dosing Housing 2 - Hopper 3 - Inlet Feed Port 4 - Metering Port Exhaust 5 - Metering Screw 6 - Level Sensor 7 - Doser Gear Reducer 8 - Agitator Gear Reducer 9 - Vibrator 10 - Agitator Element
Compressed Air Propelled Feeder Dosing SystemsMD-AC MicroDoser
45
Compressed Air Micro-Dosing Unit
MD-AC Doser 1 - Dosing Housing 2 - Hopper 3 - Inlet Feed Port 4 - Metering Port Exhaust 5 - Metering Screw 6 - Level Sensor 7 - Doser Gear Reducer 8 - Agitator Gear Reducer 9 - Vibrator 10 - Agitator Element 11 - Vibrating Fork Level Sensor 12 - Surge Hopper 13 - Eductor Venturi 14 - Pressure Transmitter 15 - Weighing System 16 - Air Preparation Station 17 - System Platform
Compr Air Propelled Feeder Dosing System Material FlowMD-AC Doser Schematic
46
Weigh Scale
Venturi Eductor
Material Inlet
Surge Hopper
Transport Pipe
Elements of MD-AC Feeder Dosing SystemsPropulsion Components
47
Anti-plugging Pressure Sensor
Compressed Air
Level Sensor
Venturi Eductor
Surge Hopper
Stainless Steel Transport Pipe
and Anti-abrasion Tube
Blower Propelled Feeder Dosing SystemsMD-P MicroDoser
48
Blower Propelled Micro-Dosing Unit
MD-P Doser 1 - Dosing Housing 2 - Hopper 3 - Inlet Feed Port 4 - Metering Port Exhaust 5 - Metering Screw 6 - Level Sensor 7 - Doser Gear Reducer 8 - Agitator Gear Reducer 9 - Vibrator 10 - Agitator Element 11 - Vibrating Fork Level Sensor 12 - Surge Hopper 13 - Eductor Venturi 14 - Pressure Transmitter 15 - Weighing System 16 - Air Preparation Station 17 - System Platform 18 - Blower
Blower Propelled Feeder Dosing System Material FlowMD-P Doser Schematic
49
Weigh Scale
Venturi Eductor
Material Inlet
Surge Hopper
Transport Pipe
Elements of MD-P Feeder Dosing SystemsPropulsion Components
50
Anti-plugging Pressure Sensor
Level Sensor
Venturi Eductor
Surge Hopper
Stainless Steel Transport Pipe
and Anti-abrasion Tube
Venturi Eductor
Surge Hopper
Blower
Flow-through Valve Feeder Dosing SystemsMD-VS MicroDoser
51
Blower Propelled - Flow-through Valve - Micro-Dosing Unit
MD-VS Doser 1 - Dosing Housing 2 - Hopper 3 - Inlet Feed Port 4 - Metering Port Exhaust 5 - Metering Screw 6 - Level Sensor 7 - Doser Gear Reducer 8 - Agitator Gear Reducer 9 - Vibrator 10 - Agitator Element 11 - Vibrating Fork Level Sensor 12 - Surge Hopper 13 - Eductor Venturi 14 - Pressure Transmitter 15 - Weighing System 16 - Air Preparation Station 17 - System Platform 18 - Cross-flow Metering Valve 19 - Blower
Flow-through Valve Feeder Dosing System Material FlowMD-VS Doser Schematic
52
Weigh Scale
Flow-through Valve
Material Inlet
Surge Hopper
Transport Pipe
Elements of MD-VS Feeder Dosing SystemsPropulsion Components
53
Level Sensor
Stainless Steel Transport Pipe
and Anti-abrasion Tube
Flow-through Rotary Valve
Surge Hopper
Blower
Flow-through Rotary Valve
Double Feeder Dosing SystemsMD-D MicroDoser
54
Dual Micro-Dosing Unit
MD-D Doser 1 - Dosing Housing 2 - Hopper 3 - Inlet Feed Port 4 - Metering Port Exhaust 5 - Metering Screw 6 - Level Sensor 7 - Doser Gear Reducer 8 - Agitator Gear Reducer 9 - Vibrator 10 - Agitator Element 11 - Vibrating Fork Level Sensor 12 - Surge Hopper 13 - Eductor Venturi 14 - Pressure Transmitter 15 - Weighing System 16 - Air Preparation Station 17 - System Platform
Double Feeder Dosing System Material FlowMD-D Dual Doser Schematic
55
Weigh Scale
Material Inlet
System 2System 1
Water Propelled, Slurry Mixing Feeder Dosing SystemsMD-A MicroDoser
56
Water Propelled Micro-Dosing Unit
High-pressure Pump
Peristaltic Pump
MicroDoser Venturi
Water Propelled, Slurry Mixing Feeder Dosing SystemsMD-A MicroDoser
57
Material Inlet
High-pressure Pump MicroDoser Venturi Transport Pipe
Flow Accelerator
Compressed Air Propelled Feeder Dosing SystemMD-AC 50 Doser
58
Compressed Air Propelled Feeder Dosing System Teflon Coated and ATEX Components
MD-AC-TX-ATEX Doser
59
Big Bag Unloader and Feeder Dosing System Teflon Coated and ATEX Components
MDS-P + FIBC Unloader ATEX
60
Double Feeder Dosing Systems for Dry Urea SNCRMD-D MicroDoser
61
Dual Micro-Dosing Unit
Flow-through Valve Feeder Dosing SystemMD-VS Doser
62
Compressed Air Feeder Dosing SystemMDS-AC Doser
63
Blower Propelled Feeder Dosing System for SorbacalMDS-P Doser
64
Compressed Air Feeder Dosing SystemMDS-VS Doser
65
Multi-Outlet Rotary Plough DistributorsMaterial Distribution Systems
66
Material Distribution Systems
67
‣ Solves the problem of discharging and distributing hard to flow material from a single silo to multiple points.
‣ Design is adaptable to the number and location of outlets, as well as the speed of the material extraction.
‣ Operational advantages: ‣ Modular design ‣ Optimal material distribution
‣ Multiple outlets with single silo ‣ Ideal for hard to handle powders
‣ Minimal maintenance needs ‣ Compact, small space requirement
‣ High reliability and quality ‣ Ease of installation
Multi-Outlet Rotary Plough Distributors
Material Distribution Systems
68
Material Outlet
Material Inlet
Cutaway View of a 4-Outlet Material Distributor
Multi-Outlet Rotary Plough Distributors
Material Distribution Systems
69
Example Application of a 2-Outlet Material Distributor
Multi-Outlet Rotary Plough Distributors
Multi-Fluid Nozzle TechnologySTM Atomizing Systems
70
What is Evaporative Gas Cooling?STM Atomizing Systems
‣ When a cold liquid is sprayed into a hot gas, the following phenomenon occurs: • The liquid droplets absorb heat from the hot gas, thus raising the temperature of the
droplets • As the droplets are heated, they begin to vaporize, and decrease in diameter until they
are totally vaporized • The evaporated liquid (steam) then continues to absorb heat from the gas until
equilibrium is reached (gas and steam temperature is equal)
‣ This transformation of the cold liquid droplets into steam is accomplished by absorbing heat from the hot gas, thus reducing its temperature.
‣ Although a portion of the heat given up by the hot gas is used to heat the water droplets and the vaporized steam, the largest portion of the heat removed from the gas is utilized to provide the “latent heat of vaporization” required to vaporize (evaporate) the droplets.
‣ This phenomenon is generally known as Evaporative Gas Cooling71
Evaporative Gas Cooling ProcessesSTM Atomizing Systems
‣ Evaporative gas cooling, also known as EGC, is utilized to “condition” flue gas from a combustion process so that it is most effectively treated in downstream dust collection systems.
‣ Examples of process exhausts which require gas cooling include: • Dryers in chemical and pharmaceutical processes • Furnaces in steel and non-ferrous metals • Power generation for humidification of the gases upstream of an ESP • Power generation for optimization of a DSIACI system • Waste incinerators (Municipal and Hazardous) • Kilns in the cement and lime industry
‣ Gas conditioning is used when the gas needs to be cooled to a temperature/moisture condition that is safely above the dew-point of the gas, in order to avoid moisture condensation.
72
EGC Benefits Upstream an ESPSTM Atomizing Systems
‣ Evaporative gas conditioning is used upstream of an Electrostatic precipitator to improve performance.
‣ EGC increases performance of an ESP: • Reduces particle resistivity
- Increasing current density • Decreases gas viscosity
- Increasing migration velocity • Increases dust cohesivity
- Reducing rapping re-entrainment • Decreases gas volume
- Increasing treatment time73
EGC Benefits Upstream an ESPSTM Atomizing Systems
‣ Evaporative gas conditioning is used upstream a fabric filter or baghouse.
‣ EGC increases performance of a fabric filter: • Reduces gas temperature
- Avoiding damage to the bags - Permitting the use of a lower temperature rated bag
• Increases dust cohesivity - Improves the filter cake properties - Reduces filter drag - Reduces filter penetration (bleed-through)
• Decreases gas volume - Lowers the air-to-cloth ratio (filtration velocity)
74
EGC Benefits Upstream an ESPSTM Atomizing Systems
‣ There are numerous applications where EGC can benefit a particular process other than just particulate collection.
‣ Processes that benefit from EGC: • Dioxin/Furan control
- Rapidly quenching the gases prevents formation of dioxins and furans - Reduces the amount of or eliminates the need for activated carbon injection
• Acid gas control - Approach to saturation increases the efficiency of calcium-based dry sorbent injection for
SO2 and HCl - Reducing the temperature increases the efficiency of calcium-based dry sorbent injection
for SO3 removal • Mercury and heavy metals
- Reducing the temperature increases the efficiency of activated carbon
‣ Often a slurry system can be replaced by a dry sorbent injection system with EGC assist.
75
Droplet Size AnalysisSTM Atomizing Systems
76
Performance Comparison OptiVap vs. Nearest Competitor
Perc
ent o
f dro
plet
s un
evap
orat
ed
0
25
50
75
100
Meters the droplet has travelled0 1 2 3 4 5 6 7 8 9 10
OptiVap NozzleCompetition
Droplet Size AnalysisSTM Atomizing Systems
77
Maximum Droplet Size for Different Outlet Temperatures
Dro
plet
Siz
e (µ
m)
0
45
90
135
180
Outlet Gas Temperature (Deg C)250 200 150 100 75
Droplet Size (µm)
Droplet Size AnalysisSTM Atomizing Systems
78
NOZZLE PERFORMANCE CURVE
0
30
60
90
120
0 3 6 9 12
Water pressure (PSIG)Air pressure (PSIG)Droplet Size (μm)
PRESSURE
WATER FLOW - GPM
DROP
SIZE
Droplet size trend maintains on pressure differential crossover
Advanced Dual-Fluid AtomizersSTM Atomizing Systems
79
OPTIVAP NOZZLE DESIGNThe OptiVap nozzle is a dual fluid atomizer that uses compressed air or nitrogen
to atomize a liquid, typically water, to cool or to inject a chemical into hot gas stream.
‣ Fine, uniform droplets under all conditions, even when water pressure exceeds air pressure (cannot be overdriven)
‣ Lowest energy consumption of any nozzle on the market ‣ Used for high velocity gas streams with short residence time requirements ‣ Minimal maintenance needs, optimal for harsh duty environments
Dual Fluid Atomizers for Gas CoolingSTM Atomizing Systems
80
Explosion Doors
Nozzles after 6 months of operation showing
no buildup and no wear
Spray lances with heat shields and freeze protection
High Temperature Upflow GCT for Steel EAF
STM Atomizing Systems
81
Chemical Injection /Humidification Spray Lances for Power Boiler Application
Spray Lance Headers
3-Zone Humidification Control System
Dual-Fluid Atomizers for Humidification/H2O2 Injection
Dual-Fluid Atomizers for Chemical InjectionSTM Atomizing Systems
82
Aqua Ammonia Control Skid for Power Boiler Application
Aqua Ammonia Injection System Tested
Dual-Fluid Atomizers for Circulating Dry Scrubber SystemsSTM Atomizing Systems
83
Spray LancesQuad Reactor Control System
Gas Cooling, Milling & Dosing Technologies for the Environment
STM EcoSystems 83 Princeton Ave., Suite 3D Hopewell, NJ 08525
Sales Contact: Joe Riley Tel. 609.273.3331 [email protected] www.stmecosystems.com
84Experience is our Technology℠
Experience is our Technology℠
