Internal Data Search by Product
Gas Turbine NOx Reduction Retrofit
Chevron’s Eastridge Cogeneration Plant near Bakersfield, California, produces steam for thermally enhanced oil recovery and electricity to the grid. To meet regional NOx emissions rules, two existing gas turbines needed the addition of selective catalytic reduction (SCR) for NOx control. This paper discusses the retrofit process from beginning to end.
Revision Date: 8/19/2015
Tags: 221112 - Fossil Fuel 化石燃料, Chevron, Peerless Manufacturing, SCR, Catalyst, Ammonia, Retrofit Technology, Cost, DeNOx, USA
Sulzer SCR Mixing and Other Mixing Equipment
Sulzer has a range of flow control and treatment products including a mixer which evenly distributes ammonia in the ductwork prior to an SCR.
Revision Date: 8/17/2015
Tags: 221112 - Fossil Fuel 化石燃料, Sulzer Ltd., Mixer, SCR, Ammonia Injection, Nox Control
Managing the Catalysts of a Combustion Turbine Fleet
Historically, many gas plants have been operated cyclically with extended dormant periods due to high natural gas prices and a varying demand for the electricity the plant provides. For plants with an SCR system, stopping and laying up the equipment may accelerate aging of the catalyst system components, increasing the importance of inspections and preventative maintenance planning. This article discusses the process of economically managing a fleet of SCR-equipped gas turbines.
Revision Date: 8/3/2015
Tags: 221112 - Fossil Fuel 化石燃料, Cormetech, Catalyst, SCR, Maintenance, NOx Emissions Reduction, Power Magazine
Align SCR Start/Stop Sequence with GT Fast-Start Sequence
The gas turbines at the Turlock Almond Plant in California were designed for 10-minute start capability, but sub-controls for the emission reduction systems were not. This case study reviews necessary changes that were made to the controls in the Ovation balance-of-plant distributed control system (DCS).
Revision Date: 6/26/2015
Tags: 221112 - Fossil Fuel 化石燃料, Distributed Control System, SCR, Fast Start, Startup, Combined Cycle Journal, USA
Updates on Water Discharge Regs, Reducing Air Emissions, Complying with NERC CIP
This article summarizes several presentations from a Combustion Turbine Operators Technical Forum (CTOTF) held in April 2015. The presentations address the status of 316(b) water intake regulations and revisions to federal effluent limitation guidelines for power plants, as well as technical issues associated with CO catalysts.
Revision Date: 6/1/2015
Tags: 221112 - Fossil Fuel 化石燃料, Catalyst, SCR, Effluent Treatment, Air Pollution Control, Combined Cycle Journal
Mitch prepared a presentation on Hot SCR System at Marsh Landing.
Revision Date: 3/20/2015
Tags: 221112 - Fossil Fuel 化石燃料, Kiewit, SCR, Air Pollution Control, USA
Recent Innovations from Gas Turbine and HRSG OEMs, by Thomas W. Overton, JD
Due to the growing demand for gas-fired power plants, OEMs have new opportunities for innovation. Recent innovations reduce emissions, make retrofits simpler and increase efficiency.
Revision Date: 7/21/2014
Tags: 221112 - Fossil Fuel 化石燃料, Gas Turbine, SCR, Performance, Optimization, Retrofit, Nox Control, Power Magazine
CAI has chemiluminescent analyzer for SCR monitoring
The CAI NOxBOX has been designed to meet the rigorous requirements for SCR monitoring.
Revision Date: 4/16/2014
Tags: 221112 - Fossil Fuel 化石燃料, California Analytical Instruments, Analyzer - Nox, SCR, Continuous Emissions Monitor, Monitoring, Nox Monitoring
Measuring Ammonia Slip from Post Combustion NOx Reduction Systems
In many facilities there may be room for process improvement that could reduce operating costs or provide revenue enhancement opportunities. Operating SNCR or SCR technology closer to its limit offers these benefits but increases the risk of high ammonia slip. The risk could be abated with the use of ammonia monitoring technology. But, except for gas-fired plants, continuous ammonia slip monitoring technologies have not been available at a practical price to facilitate these cost-saving or revenue enhancing improvements. Conditions that exist in high dust, high temperature, high NOx and/or high SO2 environments make most analyzer methods of continuously measuring ammonia unsuitable for application to coal plants. An overview of the technologies available for measuring ammonia in the high dust region downstream of a Nox reduction system and the status of their development is provided.
Revision Date: 4/14/2014
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Andover Technology Partners, SNCR, SCR, Analyzer - TDL, Analyzer - NH3, Ammonia Slip, Monitoring, Ammonia Monitoring
SCR is BACT for Gas Turbines in the Netherlands
Mid sized gas turbines burning either liquid or gaseous fuel have to meet Nox emissions of 140 mg/Nm3. SCR is considered BACT.
Revision Date: 1/13/2014
Tags: 221112 - Fossil Fuel 化石燃料, McIlvaine, SCR, NOx, Regulation, Nox Control, Netherlands
AIG Tuning, Catalyst for Life Forecasting
Many gas-turbine “bubble” units installed between 2000 and 2004 are operating with their original charge of SCR catalyst. These units have outlived the original catalyst warranty (typically three years) and have benefitted from a combination of conservative design and good luck. However, as these systems reach the decade mark, the design margins have diminished because of gradual (and inevitable) deactivation of the catalyst with age. As the catalyst nears its end of life, ammonia slip begins to increase exponentially. There are practical steps operators can take to avoid this scenario.
Revision Date: 11/20/2013
Tags: 221112 - Fossil Fuel 化石燃料, Fossil Energy Research Corp., Ammonia Injection Grid, Catalyst, SCR, Maintenance, Air Pollution Control, Combined Cycle Journal
Engineered solution improves SCR performance significantly
Getting gas-turbine inlet air and exhaust gas to flow where and how you want it to in powerplant ductwork is akin to herding cats. The problem, as described by industry veterans Jim Carlton, president, Granite Ridge Energy LLC, and Larry Hawk, plant engineer, Granite Ridge Energy, operated by NAES Corp, was that the plant had been challenged by an underperforming NOx catalyst since commissioning. However, routine destructive sampling of the catalyst showed reactivity at or above expectations. And testing confirmed that the ammonia injection grid was properly balanced. What to do?
Revision Date: 11/20/2013
Tags: 221112 - Fossil Fuel 化石燃料, Granite Ridge Energy, Catalyst, SCR, Performance, Service & Repair, Maintenance, Combined Cycle Journal
How to Reduce Catalyst Lifecycle Cost, Improve Reliability
Balancing the requirements of each SCR system in the fleet can be challenging. A system can reduce NOx by greater than 95%, but when the efficiency of the SCR is pushed beyond 85% and—or, if—the outlet emissions are less than 5 ppm, the system becomes much more sensitive to several independent system parameters. These include overall catalytic potential, effective ammonia injection/mixing in the flue-gas stream, flue-gas characteristics for inlet NOx, velocity, and temperature distributions.
Revision Date: 10/23/2013
Tags: 221112 - Fossil Fuel 化石燃料, Cormetech, SCR, Catalyst, Life Cycle Cost, Performance, Combined Cycle Journal
Cormetech Company Profile in the Combined Cycle Journal, October 1, 2013
Cormetech, a joint equity venture of Corning Incorporated and Mitsubishi Heavy Industries, Ltd., is recognized as the world’s leading developer, manufacturer and supplier of catalysts for Selective Catalytic Reduction (SCR) systems for control of nitrogen oxides from stationary sources. With manufacturing facilities in Durham, North Carolina and Cleveland, Tennessee, Cormetech services the power generation, petro-chemical refinery and industrial processing industries worldwide with environmental technology solutions.
Revision Date: 10/21/2013
Tags: 221112 - Fossil Fuel 化石燃料, Cormetech, Catalyst, SCR, Air Pollution Control, Nox Control, Combined Cycle Journal
Air Pollution Control for Gas Turbines Webinar - Hot Topic Hour September 19, 2013
Revision Date: 9/19/2013
Tags: 221112 - Fossil Fuel 化石燃料, Mitsubishi Power Systems, Eneractive Solutions, Haldor Topsoe, SCR, Catalyst, Ammonia Injection Grid, Ammonia, Air Pollution Control, Nox Control
SCR / CO / VOC Control by Bob McGinty, Mitsubishi Power Systems - Hot Topic Hour September 19, 2013
Reviewed aspects of System Design
Revision Date: 9/19/2013
Tags: 221112 - Fossil Fuel 化石燃料, Mitsubishi Power Systems, Ammonia Injection Grid, Catalyst, SCR, Nox Control, Air Pollution Control
Craig introduced a new catalyst.
Revision Date: 9/19/2013
Tags: 221112 - Fossil Fuel 化石燃料, Haldor Topsoe, Ammonia Injection Grid, SCR, Catalyst, Nox Control, Air Pollution Control
Simple Cycle SCR Designs by Bill Gretta, Eneractive Solutions - Hot Topic Hour September 19, 2013
Bill provided advice for single cycle SCR purchasers.
Revision Date: 9/19/2013
Tags: 221112 - Fossil Fuel 化石燃料, Eneractive Solutions, SCR, Ammonia, Ammonia Injection Grid, Air Pollution Control, Nox Control
Mitsubishi Power Systems Americas, Inc. at Electric Power 2013
Information regarding booth at Electric Power 2013.
Revision Date: 5/24/2013
Tags: 221112 - Fossil Fuel 化石燃料, Mitsubishi Power Systems, SCR, Heat Recovery Steam Generator, Nox Control, USA
Article by McIlvaine on Gas Turbine Emissions in Air Polluton Control Magazine
In this article, Bob McIlvaine talks about Gas Turbine Emissions and Controls, focusing on intake air filters and NH3 slip monitors.
Revision Date: 3/8/2013
Tags: 221112 - Fossil Fuel 化石燃料, Yokogawa Electric, Nederman, SICK MAIHAK, Analyzer - TDL, Analyzer - NH3, SCR, Air Filter, Ammonia Slip, Air Filtration, Air Intake, Air Pollution Control, Monitoring, Air Pollution Control
NH3 Slip Measurement by Donald Wyatt, Yokogawa – Youtube Presentation
Overview of tunable diode lasers for measuring ammonia slip and other gases.
Revision Date: 2/25/2013
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Yokogawa Electric, Analyzer - NH3, IR Laser Spectroscopy, SCR, SNCR, Ammonia Slip, Monitoring, Nox Control
NH3 Slip Measurement by Donald Wyatt, Yokogawa - Hot Topic Hour February 14, 2013
History of tunable diode lasers for measuring ammonia slip and other gases.
Revision Date: 2/14/2013
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Yokogawa Electric, SNCR, IR Laser Spectroscopy, SCR, Analyzer - NH3, Ammonia Slip, Air Pollution Control, Monitoring
Tom covered gas turbine SCR performance optimization and management.
Revision Date: 2/14/2013
Tags: 221112 - Fossil Fuel 化石燃料, Fossil Energy Research Corp., Ammonia Injection Grid, SCR, Optimization, Nox Control, Air Pollution Control
Stewart offered an economical alternative for HRSG SCR reagent supply.
Revision Date: 2/14/2013
Tags: 221112 - Fossil Fuel 化石燃料, Fuel Tech, Ammonia, Aqueous Ammonia, SCR, Air Pollution Control, Urea Conversion, Nox Control
Bob reviewed reliable control of NOx from simple cycle and combined cycle gas turbine applications.
Revision Date: 2/14/2013
Tags: 221112 - Fossil Fuel 化石燃料, Mitsubishi Power Systems, SCR, Ammonia Injection Grid, Ammonia, Aqueous Ammonia, Nox Control, Air Pollution Control
Kelly covered three product lines for emissions control from combustion turbine exhaust.
Revision Date: 2/14/2013
Tags: 221112 - Fossil Fuel 化石燃料, Vogt Power International, SCR, Ammonia, Air Pollution Control, Nox Control
NOx Control for Gas Turbines - Hot Topic Hour February 14, 2013
NOx control for specific gas turbines, NOx control technology and new technologies being developed.
Revision Date: 2/14/2013
Tags: 221112 - Fossil Fuel 化石燃料, Fossil Energy Research Corp., Fuel Tech, Mitsubishi Power Systems, Vogt Power International, Ammonia, IR Laser Spectroscopy, Analyzer - NH3, Ammonia Injection Grid, SCR, SNCR, Aqueous Ammonia, Air Pollution Control, Urea Conversion, Nox Control
SCR for Gas Turbines - InterWEBview™ with Chris Ferguson, Honeywell-UOP
This 21 minute interview with Chris Ferguson, product manager for Honeywell-UOP, addresses SCR systems for turbines and other applications.
Revision Date: 12/6/2010
Tags: 221112 - Fossil Fuel 化石燃料, Honeywell, SCR, NOx, Air Pollution Control, Nox Control