Combined Cycle Users Group : SVI DYNAMICS – Combined Cycle Journal

Combined Cycle Users Group : SVI DYNAMICS

Tuesday, November 10, 2020 @ 3pm and 3:30pm EST

Defining and implementing SCR improvements on gas turbine exhaust

Presentation Synopsis

Ever-tightening emission regulations are impacting the performance requirements of existing and new combined cycle and simple cycle gas plants. Stringent regulations on NOx, CO and ammonia slip are dictating the need for highly efficient SCR systems. Although CO and SCR catalyst designs are advancing to meet these new regulations, the SCR system designs are not always equipped to manage the performance requirement improvements.

SVI Dynamics brings extensive design and field experience on combined cycle and simple cycle units manufactured by all major SCR system integrators and HRSG OEMs. They have incorporated this knowledge and experience into new SVI SCR systems. SVI also provides in-depth analysis of your existing SCR system needed for high reliability and unit efficiency.

Key Takeaways for Users

In this webinar you will also learn:

  • How to develop a PM inspection plan for SCR systems
  • Design reviews of your system
  • Using CFD modelling to enhance performance


Bill Gretta, PE | Director | SVI Dynamics

Bill is the SCR Product Line Director at SVI Dynamics. Bill has over 25 years of experience in the air pollution control industry specializing in the design of SCR systems for coal-fired boilers, simple cycle or HRSG systems, SCR and CO catalyst design, electrostatic precipitators, fabric filters and FGD systems. His expertise includes SCR systems and gas flow modelling of air pollution control equipment. Bill is recognized as an expert in the air pollution control industry. He holds two patents for ammonia vaporization equipment designs for SCR systems and is a licensed Professional Engineer in New Jersey. He holds a BSME from Penn State University and MSME from Lehigh University.


Scott Schreeg – Director of Sales

Bill Gretta – Director of SCR Product Line


SVI DYNAMICS is a manufacturer of engineered gas path, noise control and emissions systems and is a subsidiary of SVI INDUSTRIAL who provides turnkey outage support for power and process applications.

Products and Services

Our engineered industrial exhaust system solutions and noise control support include:

  • Turnkey Gas Turbine Inlet and Exhaust Systems (New or Retrofit)
  • SCR emissions control (New or Retrofit)
  • Gas Turbine HRSG and SCR/CO System Noise Control
  • Industrial Fan Inlet and Exhaust Silencer Systems
  • Acoustical Equipment Enclosures (HRSG/Boiler House, Gas. Turbine, Skids, Fans, Ancillary)
  • Inspections and Analysis (Steel Stack per ASCE, Acoustical Surveys, CFD Flow Modeling, Physical Flow Modeling, Structural, and Mechanical analysis)



12261 Nations Ford Road
Pineville, NC 28134
United States

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