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nox monitoring Applications

  • Nitrogen Oxides (NOx) monitoring

    Oxides of Nitrogen (NO/NO2/NOX) is the product of endothermic reactions within combustion engines and causes significant environmental pollution. The main source of NOX is from the engine of automobiles and these pollutants are harmful to humans in their respective forms or in the creation of ozone (O3) or acid rain. NOX is most prevalent in our societies as a contributor to asthmatic conditions as well as the photochemical smog found throughout many industrialized cities.

    By Ecotech Pty Ltd based in Knoxfield, AUSTRALIA.

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    Monitoring solutions for the De-NOx plants

    In recent years the number of Selective Catalytic Reduction (SCR) and Selective Non-Catalytic Reduction (SNCR) plants for De-NOx have increased significantly. Continuous analysis of NOx prior to the de-NOx plant is often required to measure the concentration generated by the combustion process. This may be required to provide feed-forward to the Ammonia/Urea injection system and also to allow the effectiveness of the reduction process to be assessed. Continuous analysis of NOx post-reduction is required to allow the effectiveness of the reduction process to be assessed. It may also be beneficial to monitor NH3 slippage at this stage by calculating from the pre and post NOx levels if excess Ammonia/Urea is being applied.

    By Codel International Ltd based in Bakewell, UNITED KINGDOM.

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    Gas monitoring instruments and systems for process NOx measurement

    Nitric acid HNO3 is an important intermediate reagent for production of several important end products, such as fertilizers, explosives, dyestuffs/pigments, pesticides, pharmaceuticals, photographic materials, plastics, and synthetic fibers. At nitric acid manufacturing plants, the Gasmet™ FTIR Gas Analyzer can be used to measure several gaseous components from the process stream for purposes of process control. A single system can be used to measure the high levels of nitrogen monoxide NO and nitrogen dioxide NO2, as well as water vapor H2O, nitrous oxide N2O, carbon monoxide CO, carbon dioxide CO2 and ammonia NH3. The fixed installation products for these purposes are the Gasmet™ CEM II measurement system, and the Gasmet™ FCX Gas Analyzers, both of which utilize the FTIR measurement technique for simultaneous multicomponent analysis of the sample gas.

    By Gasmet Technologies Oy based in Helsinki, FINLAND.

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    Marine monitoring solutions for the SO2/CO2/NOx monitoring

    Process control of a SO2 scrubber on a ship is a challenge due to wet and corrosive gases. In such environment, extractive gas sampling systems require high levels of maintenance in order to operate correctly. OPSIS monitoring system solves this by using an optical, non-contact, cross-duct technique. A light beam is sent across the duct or stack to be measured, and the captured light is sent through an optical fibre cable to an analyser. The analyser measures SO2, CO2 and NOx concentrations using UV and IR absorption, approved reference methods.

    By Opsis AB based in Furulund, SWEDEN.

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    Monitoring solutions for the gas analysers areas

    Most large coal fired power plants and combustion processes are required to monitor CO, NO and NO2 (NOx), SO2 and possibly CO2; in addition the analyser has to be normalised to Standard conditions. For this application CODEL offers the five channel GCEM 40 series which uses Infrared absorption to measure these gases plus moisture, pressure and temperature.  The analyser can be configured for single channel operation to monitor any of these gases plus CH4 and HCl.

    By Codel International Ltd based in Bakewell, UNITED KINGDOM.

  • Gas monitoring and dust monitoring

    EM-5 series Continuous Emission Monitoring System (CEMS) Counting tail gas emission and realtime concentration NOX SO2 O2 Temperature pressure flow dust

    By HANGZHOU ZETIAN TECHNOLOGY CO., LTD based in Hangzhou, CHINA.

  • Environmental monitoring solution for fertilizer plants

    Measurement of particulates, SO2, NOX, ammonia, fluorides and greenhouse gas emissions from the fertilizer industry requires careful selection of instruments. Ecotech offers a complete monitoring solution tailored to this industry.

    By Ecotech Pty Ltd based in Knoxfield, AUSTRALIA.

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    Process monitoring solutions for NH3 truck engine monitoring

    A new EC regulation states that  diesel engines need to have active cleaning with urea injection in order to reduce NOx emissions. In order to control the urea dosage, a reliable measurement system is required. OPSIS LD500 laser diode gas analyser for monitoring ammonia (NH3), has been tested and approved by German TÜV, in accordance with the EURO VI standard.

    By Opsis AB based in Furulund, SWEDEN.

  • Total Reactive Nitrogen (NOy) monitoring

    NOy (total reactive nitrogen) is defined as the sum of NOX plus the compounds produced from the oxidation of NOx which include nitric acid. NOy component species include NO, NO2, NO3, HNO3, N2O5, CH3COO2NO2(PAN), and particulate nitrate.

    By Ecotech Pty Ltd based in Knoxfield, AUSTRALIA.

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    Continuous emissions monitoring in cement kilns

    Various pollutants form in the cement manufacturing process, especially when alternative fuels and waste-derived fuels are used. Typically a cement kiln using these fuels is a required to monitor hydrogen chloride (HCl). Gasmet CEM II is EN 15267-3 approved for HCl measurement in 0 … 15 mg/Nm3 range.High process temperatures result in generation of more nitrogen oxides (NOx) than in typical municipal waste incineration.

    By Gasmet Technologies Oy based in Helsinki, FINLAND.

  • Environmental monitoring solution for aluminium industry

    Measurement of particulates, SO2, NOx, fluorides and greenhouse gas emissions from the aluminium industry requires careful selection of instrumentation. Ecotech offers a complete monitoring solution tailored to this industry.

    By Ecotech Pty Ltd based in Knoxfield, AUSTRALIA.

  • Environmental monitoring solution for glass manufacturing areas

    Heavy metals, particulates, SO2 & NOx are the main emissions from the glass manufacturing industry and their measurement requires careful selection of instrumentation. Ecotech offers a complete monitoring solution tailored to this industry.

    By Ecotech Pty Ltd based in Knoxfield, AUSTRALIA.

  • Environmental monitoring solution for pulp & paper

    Measurement of particulates, SO2, NOX, TRS and greenhouse gas emissions from the Pulp & Paper industry requires careful selection of instrumentation. Ecotech offers a complete monitoring solution tailored to this industry.

    By Ecotech Pty Ltd based in Knoxfield, AUSTRALIA.

  • Marine emissions monitoring

    In recent years, new regulations have been introduced governing emissions from ships. With the International Maritime Organization (IMO) adopting Annex VI of MARPOL designed to limit sulphur oxides (SOx), nitrous oxides (NOx) and particulate matter emissions, as well as introducing emission control areas (ECAs) to reduce emissions of those air pollutants further in designated sea areas, ship owners/operators can face hefty fines for failing to meet these new requirements on the “polluter pays” principle.

    By DynOptic Systems Ltd based in Brackley, UNITED KINGDOM.

  • Environmental monitoring solution for mineral processing

    Measurement of particulates, SO2, NOX, CO, hydrocarbons and greenhouse gas emissions from the mineral process industries requires careful selection of instrumentation. Ecotech offers a complete monitoring solution tailored to this industry.

    By Ecotech Pty Ltd based in Knoxfield, AUSTRALIA.

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    Continuous emissions monitoring for glass manufacturing industries

    Process control and emissions monitoring in a glass manufacturing plant is a challenge due to high temperature in the flue gas. The OPSIS DOAS system provides the glass industry with an accurate analyser that will operate with a minimum of maintenance. The OPSIS DOAS system is based on a non-contact method that uses an optical path to measure across the duct. A single OPSIS system will measure all relevant gas componensts such as NOX, SO2, CO, CO2, H2O, O2, and others.

    By Opsis AB based in Furulund, SWEDEN.

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    NH3 Monitoring in Air

    NH3 (Ammonia) is a colorless gas with a distinctive pungent smell. Ammonia monitoring is essential in coal-fired power plants, where NH3 is used to reduce NOx emissions. The ammonia consumes all of the NOx, but its high concentration that is needed for these purposes also starts reacting with other things and in the process can clog up filters and cause premature failure of expensive SCR equipment and pre-heaters. Not to mention that these high levels create an irreparable damage to the environment.

    By Unisearch Associates Inc. based in Concord, ONTARIO (CANADA).

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    Gas monitoring instruments and systems for DeNOx process control

    In most combustion process atmospheric nitrogen reacts with oxygen in high temperature conditions to produce nitrogen oxides (NOx). Total NOx production is the sum of nitrogen monoxide NO and nitrogen dioxide NO2. The emissions of these gases are controlled through setting of emission limit values (ELVs) for power plants.

    By Gasmet Technologies Oy based in Helsinki, FINLAND.

  • Environmental monitoring solution for cement industry

    Measurement of particulates, SO2, NOx, hydrocarbons and greenhouse gas emissions from the cement manufacturing industry requires careful selection of instrumentation. Ecotech offers a complete monitoring solution tailored to this industry.

    By Ecotech Pty Ltd based in Knoxfield, AUSTRALIA.

  • Gas monitoring during industrial process

    EM-5 CEMS Coal power plant: Entrance of SCR denitration device, NOx O2 Exit of SCR denitration device: Measure remanet NH3 after reaction and avoid blocking by crystallization, NH3; Calculate denitrification rate with Nox input, NOx O2 Gas-fired power plant: Counting tail gas emission and realtime concentration, NOx O2 SO2 Temperature pressure flow dust

    By HANGZHOU ZETIAN TECHNOLOGY CO., LTD based in Hangzhou, CHINA.

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