ELEMENTS OF SCR CATALYST SYSTEM ACOUSTICAL INTERNAL LINED

ELEMENTS OF SCR CATALYST SYSTEM ACOUSTICAL INTERNAL LINED STACK & OSHA COMPLIANT PLATFORM AMMONIA INJECTION HEADER & BALANCING VALVES INTERNALLY LINED & INSULATED SCR REACTOR OPTIONAL - TEMPERING AIR SYSTEM WITH INLET FILTRATION OPTIONAL – Anti-Icing System Version: 2019 JUL 24 Electric or RFGAMMONIA VAPORIZATION SKID

TEMPERED & NON-TEMPERED BRADEN CATALYST SYSTEMS FOR GAS TURBINES Standard with Tempering Air Standard Non Tempered Air Scope: Design, Fabrication Operating Conditions – 100% load NOx Emissions – 25 ppm/25 ppm CO Emissions – 125 ppm/Design - 76 ppm North Dakota – LM 6000 PC Point Comfort Texas - LM 6000 PC Version: 2019 JUL 24 Stack emission requirements NOx Emissions – 2. 5 ppm/2. 5 ppm CO Emissions – 4 ppm/Design - 4 ppm NH 3 Slip – 5 ppm/Design 5 ppm

SCALE COLD FLOW MODEL VALIDATES DESIGN a) Validates velocity, ammonia and temperature distributions through catalyst: b) Used in conjunction for CFD Modeling c) Incorporate all devices within flow field that affects flue gas and ammonia distribution • Typical Boundaries: Turbine Diffuser or Process Equipment Exhaust Outlet through Stack Outlet. • CFD and CFM results, validates ammonia injection design, ammonia mixing devices, tempering air distribution through injection ports, turning vanes, perforated plates and flow straightening devices. Version: 2019 JUL 24 Develops flow distribution devices and injection ports to;

PERFORATED PLATE & REAGENT INJECTION Version: 2019 JUL 24 CFD MODELLING & PHYSICAL FLOW TESTING

FLOW MODELING & Version: 2019 JUL 24 DISTRIBUTION

BRADEN EUROPE SCR COMMISSIONING • CFD and Physical Flow Modelling • CO Reduction System • Ammonia Vaporization System • NOx Reduction System • CEMs Monitoring Probes • CEMs Analyzer System • Ammonia Forwarding Skid • Site Demolition and Installation • Commissioning SCR Reactor placed as single piece lift Version: 2019 JUL 24 Braden Europe SCR System SIEMENS RB 211 Braden Europe designed and fabricated the entire system in the UK to minimize risk for this project. BE’s hot catalyst system scope consisted of: