Sorbent Polymer Composite Mercury and SO 2 Control

Sorbent Polymer Composite Mercury and SO 2 Control Installation and Full Scale Performance Update John Knotts - W. L. Gore & Associates, Inc. Gas Phase Filtration Technology Leader Chris Polizzi - W. L. Gore & Associates, Inc. Product Specialist - Membrane Technologies W. L. Gore & Associates

Sorbent Polymer Catalyst (SPC) composite • Four Part Technology ü ü e. PTFE Sorbent Catalyst Chemistry H 2 SO 4 formation from humidified SO 2 gas feed • Mercury Sorbent ü ü Captures elemental and oxidized mercury High capacity for mercury capture Does not require regeneration Chem-adsorbed • SO 2 Oxidation Catalyst ü Sulfur dioxide is converted into an aqueous sulfuric acid solution and expelled to SPC materials outer surfaces ü SO 2 reduction is a co-benefit of this technology W. L. Gore & Associates SPC Material – showing e. PTFE, Sorbent and Catalyst

SPC System Background: Fixed Sorbent Technology • Low pressure drop sorbent module • Simple Passive Operation • Tailpipe solution installed downstream of all process equipment • Passive operation – no moving parts • Does not require any injection of sorbents or chemicals • Continuous mercury adsorption and SO 2 removal for long periods of time without deactivation • No need to inject any carbon for mercury control - avoids ongoing cost related to PAC supply • No contamination of the Cement Kiln Dust with carbon • No need to shuttle or waste any Cement Kiln Dust • No additional differential pressure or pulsing requirement on filter bags from carbon injection • System also address SO 2 emissions without requiring any injection of sorbents or chemicals W. L. Gore & Associates

Sorbent Polymer Catalyst (SPC) Composite Material Mercury Control Module Open Channel Design Low Pressure Drop W. L. Gore & Associates

Scalable Sequestration and Removal Efficiencies Module Stack Height and Gas Velocity Impacts Removal Efficiency Example of Mercury Removal Efficiencies at Typical Process Velocities of 8 -16 feet per second W. L. Gore & Associates

In-Scrubber Power v. Stand-Alone Cement Approach Can be installed in existing Wet FGD (above Mist Eliminator) “Zero-footprint” approach Can be installed as stand-alone structure after Baghouse or ESP (gas cooling to less than 200 F required) W. L. Gore & Associates

First Energy Fort Martin - Full Scale Installation Approach and Data • Located in Maidsville, WV • Two coal-fired units burning Bituminous coal • Unit 1 online in 1967 and produces 552 MW • Unit 2 online in 1968 and generates 546 MW • Plant uses 2. 8 million tons of high sulfur Eastern bituminous coal annually • No SCR • Configuration: Pulverized Coal Boiler – ESP – B&W WFGD – GMCS – Stack • 3, 294, 000 acfm of treated airflow W. L. Gore & Associates

Ft Martin Unit 1 Installation Approach W. L. Gore & Associates

Installation Photos – GMCS Module Loading: W. L. Gore & Associates

Installation Photos – GMCS Module Stacking: W. L. Gore & Associates

Fort Martin – Unit 1 Full Scale Results O u t a g e W. L. Gore & Associates

American Electric Power Conesville - Full Scale Installation Approach and Data • Located in Conesville, OH • Units 5 - 430 MW • Unit 6 – 430 MW • Tangentially fired units • In service since 1976 • Cold side ESP • Mg-enhanced lime wet FGD • 2, 580, 000 acfm of treated airflow W. L. Gore & Associates

Looking North at Scrubber 6 B Pltf. El. 829’-6” Pltf. El. 821’-6” W. L. Gore & Associates

W. L. Gore & Associates

AEP Conesville – Unit 6 Full Scale Results W. L. Gore & Associates

Cement - Full Scale Installation Approach and Data 2, 000 Gore Modules W. L. Gore & Associates

Cement Installation Approach – Elevation View W. L. Gore & Associates

Installation Approach – Plan View W. L. Gore & Associates

Installation Approach – Flow Diagram W. L. Gore & Associates

100 90 90 80 80 70 60 60 Inlet Concentration 50 50 Removal Efficiency 40 40 30 30 20 20 10 10 0 W. L. Gore & Associates 70 Outlet Concentration 50 100 150 Days Duration, minutes 200 250 Hg Removal Efficiency, percent Hg Concentration, ug/Nm 3 Cement Data – 4 Module Stack

For Questions Please Contact: John Knotts - W. L. Gore & Associates, Inc. jknotts@wlgore. com W. L. Gore & Associates