denox technology Articles

  • Fast, simultaneous and continuous monitoring of NOx and NH3 in DeNOx applications

    In DeNOx systems using urea injection with ammonia (NH3) as a reducing agent, the flow rate and control of NH3 must be continuously adjusted and controlled to prevent excess NH3 emissions (slip), to reduce environmental impact and cost of reagents. To optimize this process, it is essential to use an emissions analysis system for simultaneous and continuous monitoring of NOx and NH3. For preparing ...


    By Environnement S.A

  • Importing environmental technologies to China

    By mid-2007, the Shuikoushan Non-Ferrous Metal factory in Hunan Province faced a crisis. As part of its 11th Five-Year Plan (2005-2010), the Chinese government was closing down high-polluting factories–and the Shuikoushan factory was among those at risk. The 110 year-old state-owned factory, with a gross annual income of more than US $1 billion and 12,000 employees, was emitting high levels of ...

  • Filter technology to meet evolving regulations

    Maguin has developed the Cercat filter for high temperature air pollution control. In this article, David Gambier and Hélène Real outline the technology, as well as installations planned for 2009. Maguin has been present in the waste thermal treatment field since the 1970s. The company’s knowledge has been built through the turnkey supply of thermal treatment units for different kinds of products ...

  • High-temperature air pollution control technology

    Based on 35 years’ experience working for the environment, French company Maguin has developed the Cercat filter for high temperature air pollution control. David Gambier describes the technology and its potential use in the glassmaking industry.Maguin has been present in the waste thermal treatment field since the 1970s, offering customers innovative and state-of-the-art concepts. The company’s ...

  • 80-95% NOx Reduction SCR without the use of urea

    A new, patented catalyst developed by scientists at the U.S. Department of Energy's (DOE) Argonne National Laboratory that can reliably and economically reduce between 95 percent and 100 percent of the nitrogen oxide (NOx) emissions from diesel fueled engines has been licensed to Integrated Fuel Technologies, Inc. (IFT), a Kirkland, Wash.-based start-up company. IFT plans to integrate the ...


  • The Right Mix for Clean Air

    Reducing air pollution is an increasingly important topic all around the world. Many governments—also in developing countries—set new limits for emissions such as nitrogen oxides in flue gas. Sulzer offers advanced mixing technology for flue gas cleaning. The installation in a large power plant shows that these high-performance mixers can cope with the most difficult requirements. ...


    By Sulzer

  • A STIEFEL project UTO Uvrier case study

    The waste incineration plant UTO Uvrier is situated in the south western part of Switzerland. The Association which controls the plant was established in 1969 and treats waste from 44 municipalities with a combined population of 170,000 inhabitants. The principal task of UTO Uvrier is the thermal heat recovery from urban and industrial waste. Apart from this, UTO also treats other types of waste ...


    By Jakob Stiefel GmbH

  • Ten top growth markets in air, water and energy

    For suppliers of products and services for the air, water, and energy industries there are some substantial double-digit growth opportunities. Ten of these have been identified as the most promising by the McIlvaine Company These are ranked based on potential market size. #1 Shale Gas There is a very large continuing investment in extraction of gas from shale in the U.S. The ...


    By The McIlvaine Company

  • NOx in Non-Utility Industries - Part II - Control options and monitoring methodology

     This the second in a two-part series. Part I, which appeared in our June 2001 issue focuses on air emission origins of nitrogen oxides (NOx) in non-utility industries. Choice of the NOx control technology is dependent on many factors, including regulatory requirements, technical feasibility, cost and public perception. Figure 1, compiled based on publications [1-5], presents a summary of ...


  • NOx in Non-Utility Industries - Part I NOx in Non-Utility Industries - Part I - Air emission origins, best control solutions and monitoring methodology for nitrogen oxides

     Problems with reducing nitrogen oxides (NOx) are widespread in the general process industries. These industries, together with medium size utility and power generators contribute about 15 percent of global NOx emissions. The emission sources addressed include various heaters employed in chemical and petrochemical plants, nitric and sulfuric acid plants, glass furnaces, iron and steel mills, ...


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