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NOx Monitoring Applications

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    Industrial gas detection solutions for semiconductor manufacturing processes sector

    Semiconductor manufacturing processes involve highly toxic substances and flammable gases. Our ChemLogic 96 Continuous and DOD64 FTIR Sequential gas analyzers are staples in this industry with over 1,000 machines operating every day worldwide. Our gas analyzers can be found in a few different places throughout a fabrication facility such as: In the Wafer Reactor, Wafer Dryer, Gas Cabinets, and during Chemical Vapor Deposition. Our units are designed with clean environments in mind. With a sample draw of 400 feet...

    By DOD Technologies Inc based in Cary, ILLINOIS (USA).

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    Chemiluminescense based analyzer for automotive applications

    Focuses on high NOx, NOx-related and multigas-concentrations up to 10’000 ppm. Parameters included are NO, NO2, NOx, NH3, NOx-amines, O2 and CO2. The applications are characterized by demanding sample gas conditions, such as in automotive, aviation, naval, or combustive engine emissions, as well as in catalyst production.

    By ECO PHYSICS AG based in Duernten, SWITZERLAND.

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    Gas monitoring instruments and systems for engine emissions measurements

    The exhaust gas from combustion engines is a complex mixture of gases and particulate matter. The composition of the gas may change rapidly. Multicomponent analysis of exhaust gases can be performed with a Gasmet™ FTIR Gas Analyzer with a response time (T90) of one second. The winning combination is the result using of a small volume gas sample cell, a powerful sample pump and a fast detector with liquid nitrogen cooling. The analyzer, sampling system and computer can be assembled on a cart for use in a...

    By Gasmet Technologies Oy based in Vantaa, FINLAND.

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    Industrial manufacturing solutions for the pulp & paper industry

    Paper manufacturing involves many chemical processes that drive the emission of nitrogen dioxide (NO2), sulfur dioxide (SO2), and carbon dioxide (CO2). Nitrogen dioxide and sulfur dioxide are major contributors of acid rain, whereas CO2 is a greenhouse gas responsible for climate change. In addition, wastewater discharge for pulp and paper mills often contains alcohols, chelating agents, and inorganic materials like chlorates and transition metal compounds. Furthermore, chlorine and compounds of chlorine are used...

    By CECO Environmental based in Dallas, TEXAS (USA).

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    Tunnel solutions for the extractive areas

    In some countries they do not allow tunnel atmosphere monitors to be mounted on the tunnel wall; also, where there is a single bore it is very difficult to gain access for maintenance purposes. The TunnelTech 400 series are extractive gaseous pollutant and visibility monitors and extract a gas and dust sample from the tunnel bore and carry to a remote analyser. This allows maintenance to take place without affecting tunnel traffic flow.

    By Codel International Ltd based in Bakewell, UNITED KINGDOM.

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    Gas monitoring instruments and systems for stack testing

    Several EU directives and national laws in European countries set requirements for continuous monitoring of flue gas emissions at power plants. Further requirements are set on the quality assurance of the installed measurement systems at the plants. The relevant standard in this regard is EN 14181:2004, the quality assurance of automated measuring systems. The standard dictates how to determine that the measurement systems installed for continuous emissions monitoring at a plant operate according to the directives...

    By Gasmet Technologies Oy based in Vantaa, FINLAND.

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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 Vantaa, FINLAND.

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    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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    Gas analyzers and monitoring systems for fertilizer and nitric acid production sector

    Nitric acid is manufactured from ammonia and is a key chemical in the manufacture of fertilizers. This is the main reason why nitric acid is produced in such large quantities. The production process of nitric acid produces nitrogen oxides (NOx), ammonia (NH3) and nitrous oxide N2O emissions.

    By Gasmet Technologies Oy based in Vantaa, FINLAND.

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    Liquid/solid separation equipment for refinery, chemical and petrochemical

    Cracking in a refinery is a process where the long organic chains in oil are broken to produce shorter chain organics that are more valuable than the oil. Fluid catalytic cracking (FCC) has generally replaced thermal cracking of petroleum hydrocarbon feed stocks. FCC produces more gasoline with a higher octane rating. FCC’s byproduct gases are more olefinic and valuable than those produced by thermal cracking.

    By WesTech Engineering, Inc. based in Salt Lake City, UTAH (USA).

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    Environmental protection

    Laser Gas measurements Flue gas emissions, HCl, HF, CO, CO2, O2, NH3, NO, NO2

    By Hangzhou Zetian Technology Co., Ltd. based in Hangzhou, CHINA.

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    Chemiluminescense based analyzer for industrial applications

    Focuses on medium NOx, NOx-related and multigas-concentrations up to 5’000 ppm where flexibility is a central requirement. Parameters included are NO, NO2, NOx, NH3, NOx-amines, O2 and CO2. Typical supported applications are industrial emission monitoring and gas manufacturing control.

    By ECO PHYSICS AG based in Duernten, SWITZERLAND.

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    Waste incineration line continuous monitoring solutions

    In accordance with "Standard for pollution control on the municipal solid waste incineration" (draft), all existing and new the municipal solid waste incinerators need automatic continuous on-line monitoring of main ingredients in incineration flue gas. Monitoring projects should include at least HCl, SO2, NOx, soot, etc., but also need to detect CO and HF in some higher environmental requirements situations.

    By Hangzhou Zetian Technology Co., Ltd. based in Hangzhou, CHINA.

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    Premium gas generators and calibration solutions for air pollution monitoring sector

    The measurement of pollutants such as O3, NO, NO2, CO, SO2 and HC to ppb’s and ppm’s require very sensitive analysers. Over the time or according regulations and devices requirements, calibration operations are required for each measured compound. As low concentration gas standards are expensive, may be unstable or not storable, like for ozone, on-site reference gas generation with Sonimix calibrators reduce costs, logistics troubles and keep analysers performances at their higher level.

    By LNI Swissgas based in Versoix, SWITZERLAND.

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    Chemiluminescense based analyzer for semiconductor applications

    NOx detection is an innovative approach in CMP (Chemical Mechanical Polishing) process control. CMP smoothens the wafer surface with a combined chemical and mechanical polishing procedure. During production, wafers are coated by a thin layer. To avoid damage to the wafer surface, for instance by stress cracks, the NOx emitted as soon as the wafer is plane and blank must be measured. Therefore, a high-resolution NOx-detector, capable of determining exactly when the polishing process must be stopped, is essential....

    By ECO PHYSICS AG based in Duernten, SWITZERLAND.

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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...

    By Gasmet Technologies Oy based in Vantaa, FINLAND.

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    Desulfurization on-line continuous monitoring solution

    SO2 is one of several important pollutants in the atmosphere, SO2 from the atmosphere can stimulate people`s respiratory tract, abate respiratory function, and lead to respiratory resistance decreased, induce various inflammation of respiratory tract, harm to human health. SO2 also is harm to many plants. SO2 and its generated sulfuric acid mist can corrode metal surfaces and cause damage to paper products, textiles, leather products. It may also form acid rain, which is serious harm to the ecological system and...

    By Hangzhou Zetian Technology Co., Ltd. based in Hangzhou, CHINA.

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    Gas monitoring instruments and systems for nitric acid process

    Modern production method of nitric acid production may lead to generation of several different gaseous emission components, such as nitrogen oxides (NOx), ammonia NH3 and nitrous oxide N2O. Nitrogen monoxide is an intermediate gaseous product in manufacturing of nitric acid HNO3. NO is formed in a catalytic reaction between ammonia and molecular oxygen O2. But undesirable side reactions may result in formation of nitrogen dioxide NO2 and nitrous oxide N2O. The NO and NO2 emissions can be reduced by use of Selective...

    By Gasmet Technologies Oy based in Vantaa, FINLAND.

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    Industrial 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.

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    Chemiluminescense based analyzer for environmental applications

    Focuses on low NOx and NOx-related concentrations up to 100 ppm where high resolution is required. Parameters included are NO, NO2, NOx and NOy. Target applications are ambient air monitoring, indoor measurement, clean room measurement and atmospheric research.

    By ECO PHYSICS AG based in Duernten, SWITZERLAND.

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