SELECTIVE CATALYTIC REDUCTION SCR SYSTEMS Unique patented ammonia

SELECTIVE CATALYTIC REDUCTION (SCR) SYSTEMS • Unique patented ammonia injection grid achieving higher NH 3 mixing • Superior sealing to prevent bypass around catalysts • Modular construction LM 6000 SCR systems in operation

CARBON MONOXIDE (CO) REDUCTION This project combined our CO / SCR technology with our traditional stack / silencer products. CO Catalyst Mars 100 GT driving gas compressor for large gas pipeline projects

RB 211 CO / SCR RETROFIT Before Client: Siemens UK • End User: Centrica • Scope: design, fabrication, installation and potentially O&M Operating Conditions – 50% to 100% load • Mass Flow – 320, 400 kg/hr • Bulk Temperature – 500 °C Design • NOx Emissions – 140 mg/Nm 3 • CO Emissions – 300 mg/Nm 3 After Stack emission requirements • NOx Emissions – 35 mg/Nm 3 • CO Emissions – 40 to 60 mg/Nm 3 • NH 3 Slip – 3 mg/Nm 3

FILTER HOUSE & INTAKE SILENCING TVA Paradise 2 x 7 FA. 05 Noreste, Topolobampo, & Escobedo 6 x M 501 J

INLET HEATING ANTI-ICING • Inlet heating allows the GT to operate in a more efficient range where there is less NOx produced. • Anti-icing prevents frosting of filter elements, reducing pressure drop Anti-icing system - internal view of Heat Exchanger piping

DIFFUSERS AND EXHAUST PLENUMS 700+ UNITS WORLDWIDE • Diffusers and exhaust plenums are used to spread the turbulent flow from the GT out and direct the exhaust gas (and heat) to the atmosphere via the exhaust stack. • Sold directly to GE, Siemens, MHI, and end users (for replacements)

DIVERTER DAMPERS Alstom GT 13 E 2 Siemens SGT 5 – 4000 F

Exhaust Stack with silencing 6, 000+ UNITS WORLDWIDE GE LM 6000 2 unit exhaust system Siemens V 94. 2 gas turbine, 8 unit exhaust Siemenssystem SGT 5 – 4000 F