NOx emissions Articles

  • NOx and SOx Emissions Trading in Ontario

    Erik Haites outlines an unusual emissions trading programme due to begin next year. The government of Ontario recently announced its intention to establish an emissions trading programme for NOx and SOx emissions (oxides of nitrogen and sulphur) from all coal- or oil-fired electric generating plants in the province with a capacity greater than 25 MW beginning on 1 January 2001. This programme is ...

  • Reducing NOx in Diesel Emissions | Spectroscopy Solutions

    Air pollution and NOx emissions from diesel engines are a global concern due to their potential impacts on human health. Researchers worldwide are developing new and improved methods to reduce NOx emissions. Infrared spectroscopy in the gas phase, which is made possible using FTIR gas cells from Specac, has an important role to play in this ...


    By Specac Limited

  • High NOx Emissions from Diesel Cars

    It is time to sell your diesel car. In a few years you will not be able to use it in a city. ...


    By Opsis AB

  • NOx Control on a Budget

    National, regional and local regulations to reduce NOx emissions have prompted the development and implementation of a number of NOx control technologies – from selective catalytic reduction and low-NOx burners to overfire air and flue gas recirculation. Induced flue gas recirculation (IFGR), a design derivative of conventional forced flue gas recirculation, has demonstrated NOx reductions as ...

  • Research NOx Analyzers

    ECO PHYSICS provides environmental experts with exceptionally sensitive and precise NOx measurement instruments. Please take a look at our newest press release on our research NOx analyzers below. Bound by the same laws of nature, ecology and physics are close associates in an on-going battle to preserve air quality around the globe. One of our planet's champions is Swiss-based ECO PHYSICS. The ...


    By Eco Physics Inc.

  • Case No : 601: Reducing NOx emissions from Nirtic Acid Manufacturing Plants with NOx Abatement or NSCR

    NOx Abatement is a Non-Selective Catalytic Reduction (NSCR) technology that has a long and proven track record for controlling NOx emissions from nitric acid manufacturing plants. It can be used to alter the NO to NO2 balance (decolourization) or to eliminate NOx through catalytic reaction with a fuel as a reductant. ...

  • Variability of NOx Emissions from Precalciner Cement Kiln Systems

    In 2003, there are forty-two precalciner kilns out of about 190 total portland cement kiln systems operating in the United States. As a class, precalciner kiln systems have the lowest annual mass emissions of the oxides of nitrogen (NOx) per ton of clinker when compared to wet, long-dry and preheater kiln systems, however, like all cement kilns, precalciner systems experience significant ...


    By Trinity Consultants

  • NOx Emissions trading scheme repealed in the Netherlands — Global Impacts?

    The once-trailblazing Dutch Nitrogen Oxides Emission Trading Scheme (NOx ETS) is to be repealed: what are the effects? In recent years, Emissions Trading Schemes have gained momentum around the world.  Hundreds upon thousands of companies have had to adapt to be able to handle the effects of more stringent regulation. The Netherlands pioneered the launch of the world’s first ...

  • Exergy analysis of combustion characteristics and NOx emissions of a dual–fuel engine

    The combustion characteristics and NOx emissions of compression ignition engines working on a dual fuel mode are investigated numerically and their exergetic efficiencies are determined. The model has been validated with available experimental results. The simulation results show that dual fuel engine combustion and trend of NOx ...


    By Inderscience Publishers

  • A novel approach for modelling of NOx emission reduction in a tangentially fired coal boiler

    In this research paper, predictive modelling of NOx emission of a 210 MW capacity pulverised coal–fired boiler and combustion parameter optimisation to reduce NOx emission in flue gas is proposed. The effects of oxygen concentration in flue gas, coal properties, coal flow, boiler load, air distribution scheme, flue gas outlet temperature and nozzle tilt were studied. The data collected from ...


    By Inderscience Publishers

  • CFD Analysis for NOx-Control in a Refinery

    Refineries are required by law to reduce the emission of nitrous oxides (NOX) to the atmosphere. Spray nozzles are key components in the gas conditioning equipment used to control the humidity and temperature of the gases, providing controlled volumes of liquid with predictable drop size and consistent spray coverage. Knowing these values is vital for the optimization of gas conditioning ...


    By Spraying Systems Co.

  • Reaching Euro VI emissions limits

    The requirements of low and lowest detectable exhaust analysis has prompted Eco Physics to launch a broad range of analyzers for NO/NOx detection. Emissions tuning is one of the targets of the EURO VI regulations as well as US EPA 2010, which are: Reduction of Particulate Matter (PM) and reduction of Nitrogen Oxides (NOx). In the past 15 years – since the first European regulation for exhaust ...


    By Eco Physics Inc.

  • Theory of Cost Effective NOx Control

    NOx is one of the primary air pollutants emitted from combustion processes and environmental regulations are the only driver forcing industry to install NOx control systems. In the Houston Galveston area alone, there is over 6,000 point sources that would need to be controlled to comply with the new State Implementation Plan adopted by the TNRCC. Many in the industry are in the process of ...

  • Tri-NOx Multi-Chem Wet Scrubber. Case Study of Our NOx Scrubber in a Plastics Resin Plant.

    As part of a commitment to reduce airborne emissions – or even the threat of such emissions – the Mt. Vernon, IN plant of GE Plastics has installed a NOx scrubber. When such GE Plastics products as Ultem resins are produced, nitric acid is used, and emissions from this step are tightly controlled. But to address upset conditions, the company opted to install an emergency scrubber that can treat ...


    By Tri-Mer Corporation

  • Urban eddy covariance measurements reveal significant missing NOx emissions in Central Europe

    Abstract Nitrogen oxide (NOX) pollution is emerging as a primary environmental concern across Europe. While some large European metropolitan areas are already in breach of EU safety limits for NO2, this phenomenon does not seem to be only restricted to large industrialized areas anymore. Many smaller scale populated agglomerations including their surrounding ...


    By ECO PHYSICS AG

  • Layered Reduction Technologies for Effective NOx Control

    The control of nitrogen oxides (NOx) is a well-known requirement for utility and industrial furnaces alike.  Although the regulations and corresponding emission limits vary greatly, the need for substantial reduction is becoming universal.  There are a few existing NOx reduction technologies which have been proven effective in a variety of applications.  The most appropriate ...


    By Fuel Tech, Inc.

  • Tri-NOx Multi-Chem Wet Scrubber. Case Study of Our NOx Scrubber in an Automotive Manufacturing Plant

    Toyota Auto Body of California, Inc. (TABC) manufactures 170,000 truck beds per year at its Long Beach, CA facility. The company also makes catalytic converters, and generates NOx at several points within that process. A Tri-NOx scrubber has controlled those emissions with exceptional efficiency since its installation in 1988 To accommodate increased demand, the plant sought Tri-Mer's assistance ...


    By Tri-Mer Corporation

  • Daily variation of traffic emissions in Athens, Greece

    In this work, the emissions of four pollutants (CO, Benzene, NOx and PM10) during a working day were estimated and presented in main avenues of Athens, Greece with the aid of the COPERT methodology. The data used as input to the COPERT III was collected through a measuring campaign every 15 min and lane for the time period 07.30-17.30 of a weekday. The results revealed the CO, Benzene, NOx and ...


    By Inderscience Publishers

  • Advanced SNCR - NOx Reduction on Large Utility Boilers

    Fuel Tech has recently completed full-scale demonstrations of Advanced Selective NonCatalytic Reduction systems on a number of large utility boilers (>600MW) firing a variety of fuel types. The systems use the latest flexible injection technology and are controlled with a balanced algorithm utilizing unit load, a full grid of continuous furnace temperatures and the plant continuous emissions ...


    By Fuel Tech, Inc.

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