Resources
Learn More About Peerless Emissions Management Solutions
Find the latest resources and news from Peerless emissions experts, plus case studies and insights important to the markets we serve. Explore brochures, case studies, videos and blogs covering selective catalytic reduction (SCR), selective non-catalytic reduction (SNCR), direct injection, low-NOx burners and aftermarket parts and services.

Brochure
Case Study
330MW POWER PLANT RECEIVES SELECTIVE
CATALYTIC REDUCTION (SCR) UPGRADE
The facility operated a 330 MW oil-fired boiler equipped with a Selective Catalytic Reduction (SCR) system. The system was originally installed in the 1990s to reduce nitrogen oxide (NOx) emissions and was failing to meet current emissions standards.
Over time, the existing system became increasingly difficult and costly to operate. The system relied on steam to vaporize ammonia before injecting it into the exhaust gas, adding to operating costs. Meanwhile, the ammonia injection grid was prone to plugging, affecting performance and reliability. For years, the facility struggled to consistently operate its SCR system within its NOx emissions limits.
Case Study
Urea SCR Retrofit for a Paper Mill Packaged Boiler
Single-digit emissions were required by regulations. The customer’s existing ultra-low-NOx burner (ULNB) did not work well, especially at part load where the mill desired to operate for optimum production. The customer was concerned about the safety, reliability and overall operation of the ULNB requiring plant personnel to regularly monitor. Finally, the customer desired to reduce costs and reporting requirements associated with ammonia reagent.
Case Study
Protecting the Environment at
Carbon Black Production Facilities
A consent decree forced the customer to reduce air pollution emissions at two of their carbon black manufacturing facilities. An SCR system designed to be retrofit into the existing facilities footprint was needed to meet the emissions requirements set forth by the consent decree.
Case Study
Trent Gas Turbine and
Emission Control SCR System
A simple cycle 62 MW Rolls-Royce Trent gas turbine with a Peerless designed, engineered and delivered emission control SCR system.
Case Study
CECO Peerless Emission Reduction
Solutions for Combined Cycle (HRSG)
Repower Project
As part of a customer’s repower project, CECO Peerless was contracted to upgrade the emissions control system for a 3 x 1 combined cycle plant whose existing separate CO/VOC oxidation and SCR (DeNOx) systems were insufficient for the increased exhaust flow and higher inlet emissions expected from the repowered combustion turbine-HRSG.
Case Study
Peerless EDGE® Retrofit: 9 Units – 3-on-1 CC
Turnkey Retrofit of Peerless EDGE® AIG
Designed for minimal outage time – Including no external piping modifications
Case Study
SCR Retrofit of SCONOX System
The customer had 2 existing SCONOX systems used for NOx and CO reduction that had high operation and maintenance costs. The customer needed a safe, reliable, low maintenance alternative to replace the SCONOX system, while continuing to meet stringent emissions requirements.
Case Study
Utility Boiler Burner Replacement for Tucson Electric Power
Tucson Electric Power (TEP) experienced long-term reliability issues with high carbon monoxide (CO) emissions on Sundt Generating Station Unit 4. This problem was due to burner component failure and an automated control system on the over-fire air (OFA) ports that resulted in an imbalance of fuel and air for combustion. Also, the existing burner was designed for coal- and gas-firing, making it less than optimal for low NOx operation. The plant also needed to maximize burner turndown and reduce the nitrogen oxide (NOx) emissions.
Case Study
Direct Injection-SCR and CO Reduction
on 440 KPPH NG Boiler
The Ingredion Argo facility needed to expand their steam capacity by 440 KPPH while meeting the air permit requirement of NOx <10 ppm and CO <50 ppm from 10%-110% Load. On a boiler of this size, this required the use of both SCR and CO Catalyst to meet the air permit requirements. CCA was awarded the emissions control system. The end user preferred a direct injection system over a conventional vaporizer/decomposition system to save on operating and utility costs. All while meeting their stringent emissions requirements.
Case Study
1250 MW Combined Cycle Power Plant EDGE® AIG Retrofit
A 1250 MW combined cycle power plant with nine 400 MW units was concerned about an upward trend in ammonia usage over recent years. Their aging ammonia injection grid (AIG) had been procured through their HRSG OEM, and they had identified cracking issues in the older lances as one potential root cause.

