MicroMistTM Wet Scrubber Advanced Scrubbing Technology Ultra-High Efficiency Fossil Fuel Pollutant Capture

The MicroMist™ Scrubber

Benefits of MicroMistTM Scrubbing Technology Lower Energy Consumption - MicroMist System Typically Operates With Less Than 25” W.C. of Total Pressure Drop Lower Equipment Costs than Standard Scrubbing High Capture Efficiencies on Acid Gasses & Submicron Particulate High Capture Efficiencies on Condensable Compounds Retrofits on Existing Equipment = Minimal Down Time Proven Results!

What’s Different? Sequence of Scrubbing “Events” Quenching and Sub-Cooling Patented System Employing Fine Droplets Uses Proprietary Dual-Nozzle Contact Trays, High Efficiency Mist Eliminators with Irrigation Lower System Pressure Drop Affects the Ability to Scrub Fine Particulate, Acid Gases, and Heavy Metals in “One System” Water Management and Experience High Flexibility for Varying Gas Flow

Conventional Scrubbers DIRTY SCRUBBER EXHAUST PROCESS EHAUST Low Particulate Collection Efficiency Inefficient Energy Use (>70” W.C.) Atomization of Particulate Collection Affects Draft Poor Turn-Down Little Effect on Condensable Compounds Difficult Solids Control WATER SEPARATOR STAGE VENTURI STAGE SATURATED GASSES DRAIN DRAIN

MicroMistTM Scrubber Clean Flue Gas Gas High Particulate Collection Efficiency (>99.5%) High Capture Efficiency of Acids & Condensable Compounds (>98.9%) High Capture Efficiency of Heavy Metals (95% - 99% + ) Energy Efficient (System ∆P <25” WC) Atomization for Particulate Collection Independent of Draft Excellent Turn-Down Superior Solids Control & Segregation

Stage 1: Quench Clean Flue Gas Gas 1 MicroMistTM Scrubber Elements Quenching Upstream of True Venturi Tubes 95% Particulate Removal Removal of SO2 & HcL Separation of Drain Water < 1” WC Pressure Drop 1 MicroMistTM Scrubber Elements

Stage 2: Sub-Cooling Clean Flue Gas Gas 2 Conditioning Agglomeration Absorption of acid gasses Removal of SO2 & HCL and PM > 1 micron 2 MicroMistTM Scrubber Elements

Stage 3: Patented True Venturi Stage Flue Gas Clean Gas Stage 3: Patented True Venturi Stage Condensation and Agglomeration of H2SO4, Fumes and Sub-Micron Particulate Internal Throat Atomizer Controls Differential Pressure With Varying Process Loads (Control to ~16” WC) Correct Droplet Atomization for Maximum Collection Efficiency Venturi Design Achieves Multi-Stage Liquid/Particle Differential Velocities for Sub- Micron collection Separate Drain for Maximum Liquor Management & Ph Control 3 MicroMistTM Scrubber Elements

Venturi Tubes are “Ideal” Design Incorporating Maximum Particle/Droplet Collisions & Pressure Recovery

Vertical Centrifugal Pumps 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

Stage 4: Separation Clean Flue Gas Gas 4 MicroMistTM Scrubber Elements High Efficiency Separator Stage Combination of Dual Orifice Contact (DOI) trays with Mist Eliminator “Flushing” Removal of Dirty Water Droplets With Irrigation And Backwash Spray Nozzles Prevents Carry Over of Water into Scrubber Outlet 4 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 MicroMistTM Scrubber

Emissions Control Technology Comparison PM (front) (back) SO2 H2SO4 MicroMistTM Scrubber x ESP - ESP & SO2 Scrubber some ESP, SO2 Scrubber & WESP Baghouse Baghouse, dry lime injection

Piloting the MicroMistTM Scrubber Pilot testing emissions control applications is the most effective way to predict performance, operating conditions & chemical consumption. Pilot units must be accurately “scalable” to ensure correct and predictable results Pilot units must be modular to allow simple addition and subtraction of process stages

Test Capacity = 6,000 ACFM Production 8” Venturi Tube

Incorporates Patented StarTM WESP Technology

2 3 1 EME 4 MicroMistTM Scrubber Field Testing Pilot Equipment SUB-COOL 3 MicroMistTM VENTURI EME 1 QUENCH 4 SEPARATOR ALL MOUNTED ON A FLAT-BED FOR CONVIENENCE

MicroMistTM Scrubber Pilot? Why try the MicroMistTM Scrubber Pilot? Cost Effective Test of System Efficiency All Equipment Arrives on Site Together Easy, Convenient, and Compact Complete Engineering Assistance Includes All Required Instrumentation Includes Production 8” Venturi Tube in MMV Stage Test Ports in Multiple Locations On-site Field Service Technicians “One System” Solution To Pollution Control