NOx Archives

Thermal Flow Meter Offers Precise NH3 Injection for NOx Control in Coal-Fired Power Plants

Press Release — Thu, 06 Nov 2025 19:43:23 +0000

Ideal for Pollution Control & Monitoring Systems’ Stack or Flue NOx Scrubbers San Marcos, CA—November 6, 2025—Process and pollution control engineers will find that the FCI ST100A Flow Meter helps them more accurately control the application of ammonia (NH3) for nitrous oxide (NOx) removal under harsh operating conditions in large flue stacks at cleaner coal […]

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Supreme Court Halts EPA’s ‘Good Neighbor Plan’

Aaron Larson — Thu, 27 Jun 2024 19:34:04 +0000

The U.S. Supreme Court in a 5–4 vote blocked enforcement of the Environmental Protection Agency’s (EPA’s) final “Good Neighbor Plan,” a rule intended to significantly cut smog-forming nitrogen oxide (NOx) pollution from power plants and other industrial facilities in 23 states. In the meantime, the applicants, which include the states of Ohio, Indiana, and West […]

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EPA Denies Industry Petition to Delist Stationary Combustion Turbines as Hazardous Pollutants

Sonal Patel — Thu, 18 Apr 2024 18:58:17 +0000

The U.S. Environmental Protection Agency (EPA) has denied an industry petition seeking to delist stationary combustion turbines from the agency’s list of hazardous air pollutants (HAP) major source categories regulated under section 112 of the Clean Air Act (CAA). The agency’s final action on April 11 responds to an August 2019 petition filed by several […]

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The Big Picture: Coal Controls [Infographic]

Sonal Patel — Tue, 02 Apr 2024 10:24:34 +0000

U.S. coal power plant emissions in 2023 showed dramatic reductions in air pollutants, owing mainly to coal plant closures. According to the U.S. Environmental Protection Agency (EPA), compared to 2022, sulfur dioxide emissions fell by 24%, nitrogen oxides (NOx) by 15%, carbon dioxide by 7%, and mercury by 17%. Over the years, coal plants have […]

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GE Vernova, IHI Developing Novel Ammonia-Capable Gas Turbine Combustor

Sonal Patel — Thu, 25 Jan 2024 21:08:56 +0000

GE Vernova will collaborate with Japanese integrated heavy industry group IHI Corp. to develop a retrofittable 100% ammonia-capable gas turbine combustion system that would be compatible with GE’s 6F.03, 7F, and 9F models, targeting a potential commercially available product by 2030. The companies on Jan. 24 signed a joint development agreement (JDA) that formally launched […]

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Understanding Selective Catalytic Reduction Systems and SCR Design Considerations

Aaron Larson — Wed, 01 Nov 2023 10:04:37 +0000

Selective catalytic reduction (SCR) is an important emissions control technology utilized at many coal, biomass, waste-to-energy, and gas-fired power plants. Many items must be considered when designing SCR

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South Korea’s First ‘K-Gas Turbine’ Begins Commercial Operation

Sonal Patel — Fri, 01 Sep 2023 04:19:21 +0000

Marking a significant inroad to establish a South Korean foothold in the world’s gas turbine technology market, heavy industrial company Doosan Enerbility this summer began commercial operation of its first

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Could SCR Catalyst Technology Adoption Be a Roadmap for Power Plants Seeking Economical and Efficient CO2 Point-Source Solutions?

Contributed Content — Tue, 08 Aug 2023 14:30:43 +0000

As the quest to develop a net-zero carbon emissions electricity grid marches on, global entities like the International Energy Agency (IEA) increasingly point to a big role for carbon capture, utilization, and storage (CCUS). The IEA goes so far as to say reaching net-zero will be nearly impossible without CCUS. Proposed governmental greenhouse gas emissions […]

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EPA Projects Final ‘Good Neighbor Plan’ Will Result in 14 GW of Coal Retirements

Sonal Patel — Thu, 16 Mar 2023 13:23:48 +0000

The Environmental Protection Agency (EPA) on March 15 issued the final “Good Neighbor Plan,” its latest iteration of the Cross-State Air Pollution Rule (CSAPR) that could require coal, oil, or gas steam power plants in 22 states to reduce their nitrogen oxide (NOx) emissions levels by 50% by 2027 compared to the 2021 ozone season. […]

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GE Releases New Option to Cut Emissions on Its Mobile Gas Turbines

Aaron Larson — Tue, 06 Dec 2022 16:00:27 +0000

GE Gas Power announced on Dec. 6 that it has deployed an “innovative technical solution” on four TM2500 aeroderivative gas turbines at the California Department of Water Resources’ (DWR’s) sites in Yuba City and Roseville, California (Figure 1). The solution reportedly reduced nitrogen oxide (NOx) and carbon monoxide (CO) emissions by more than 90%, surpassing […]

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