Emissions Control Solutions
Power Generation
Power generators rely on Peerless emissions management solutions to keep NOx, CO, VOC and ammonia slip within permit limits across simple cycle peaking plants, combined cycle/HRSG facilities and utility/industrial boilers, whether the need is a new system or a retrofit to equipment on site. Every solution is engineered around the plant’s actual operating parameters and space availability rather than a one-size design.
More Than Equipment.
A Long-Term Emissions Reduction Partner.
Applications Peerless Serves
Simple Cycle Gas Turbines
Peaking and simple cycle plants need compact, fast-responding emissions control that doesn’t compromise turbine flexibility. At the Howard M. Down Generating Station, a Peerless designed, engineered and delivered SCR system on a 62 MW Rolls-Royce Trent gas turbine reduced NOx from 25 ppmvd to 2.5 ppmvd on natural gas and from 42 ppmvd to 5 ppmvd on oil, both with 5 ppmvd ammonia slip.
At the 100 MW Waterbury Generation LLC peaking plant, a compact emissions control system combining SCR and CO catalyst was engineered around an LMS100 combustion turbine, using a vertical gas path design assembled from just six modules to minimize footprint and installation time while preserving operational flexibility.
Combined-Cycle and HRSG Facilities
Combined-cycle plants and their HRSGs are where Peerless’s EDGE® AIG and retrofit expertise excel. A turnkey EDGE® AIG retrofit across nine units at a 1,250 MW combined-cycle plant cut ammonia usage 30-40% while improving NOx control and catalyst life. The same retrofit at CLECO’s Acadia Generating Station, also a nine-unit, 3-on-1 combined-cycle configuration, reduced ammonia consumption by 15-35% and is projected to extend catalyst life by two to three years.
At a Midwest repower project, Peerless upgraded a 3×1 combined-cycle plant’s separate CO/VOC oxidation and SCR systems to a single multi-pollutant catalyst layer sized for the repowered turbine’s higher exhaust flow, achieving NOx below 2 ppmvd (95%+ reduction) with the first unit installed complete in under 14 weeks from purchase order. For a California utility replacing two aging SCONOX systems on Siemens SGT-800 turbines, Peerless supplied a urea-based direct injection SCR/CO system that reduced NOx by 87-95%, held CO and ammonia slip within permit limits and increased total plant output by reducing system pressure drop. Two Direct Injection NOx/CO reduction systems were also retrofit on two LM-2500 units at a Southern California Utility, resulting in higher efficiency emissions reduction with reduced maintenance and operating costs.
Boilers
For boiler-based generation, Peerless’s CCA Combustion Systems address NOx and CO at the source. At Tucson Electric Power’s Sundt Generating Station, replacing nine burners with CCA low-NOx burners resolved a long-standing CO reliability issue while lowering NOx, delivering a stable flame with 10:1 turndown and reduced maintenance costs.
CCA’s broader combustion portfolio includes new burners, burner replacements and upgrades, over-fire air (OFA) and flue gas recirculation (FGR) and Selective Non-Catalytic Reduction (SNCR) systems that reduce NOx emissions by 50-70% on utility and auxiliary boilers.
Retrofit Options for Existing Plant Equipment
Most power generation facilities aren’t starting from a blank sheet, and Peerless is built to work with whatever emissions equipment is already on site. Retrofit engineering is designed around minimizing outage time, often without disturbing existing external piping, so plants can improve performance without a full system replacement.
Retrofit Solutions Include:
Replacing aging or cracked ammonia injection grid lances with the patented EDGE® AIG design
Converting conventional vaporizer/AIG systems to direct injection to cut operating costs; adding RASCR™ vaporizer skids to improve startup and transient emissions performance on cycling gas turbines
Rebuilding or upgrading AFCU and vaporizer skids, including controls upgrades and reagent conversion
Catalyst testing, cleaning, replacement and storage
SCR Burner, OFA/FGR and SNCR retrofits on existing utility boilers
