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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
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
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
Gas Turbine Regulatory Drivers Webinar - Hot Topic Hour February 5, 2015
National Ambient Air Quality Standards (NAAQS), emission standards for greenhouse gases and corresponding State permitting hurdles present many challenges for power plant operators. A discussion of these issues and ways to address them were discussed by today’s speakers.
Revision Date: 2/5/2015
Tags: 221112 - Fossil Fuel 化石燃料, EmeraChem, Siemens, McIlvaine, AECOM, Catalyst, Nox, Market, MACT, Regulation, CO2, NAAQS, VOC, CO, Air Pollution Control
Joshua reviewed the factors to consider in designing a catalyst and calculating the volume to control CO, VOCs, SO2 and NOx
Revision Date: 2/5/2015
Tags: 221112 - Fossil Fuel 化石燃料, EmeraChem, Catalyst, NOx, Regulation, CO, VOC, CO2, Nox Control, Air Pollution Control
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
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
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
Groome Industrial Service Company Profile in the Combined Cycle Journal, October 1, 2013
We offer a variety of SCR and CO Catalyst cleaning and maintenance services nationwide. Our methods have been value engineered and proven effective. We have formed strategic alliances with industry experts and catalyst manufacturers to ensure that we offer the most widely supported, comprehensive, turn-key service available.
Revision Date: 10/23/2013
Tags: 221112 - Fossil Fuel 化石燃料, Groome Industries Services, Catalyst, Service & Repair, Combined Cycle Journal
Haldor Topsoe Company Profile in the Combined Cycle Journal, October 1, 2013
Haldor Topsoe, Inc. is recognized as the world leader in the development and supply of catalyst and technology for industrial processes and air pollution control. With a global presence encompassing 10 countries on five continents – and catalysis products involved in 90% of the world’s chemical processes, and 60% of all industrial production, Topsoe services the petro-chemical, hydrogen, syngas, ammonia, methanol, sulfuric acid, refinery, hydro-processing, coal conversion, and power generation industries worldwide with both catalyst and technology solutions.
Revision Date: 10/22/2013
Tags: 221112 - Fossil Fuel 化石燃料, Haldor Topsoe, Catalyst, Nox Control, Air Pollution Control, 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
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
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