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multi-metals continuous emissions monitoring system Applications

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    Continuous emissions monitoring for aluminium smelters

    Process control and emissions monitoring in an aluminium smelter is a challenge due to the high concentrations of HF. To use an extractive system in this environment will demand a lot of maintenance.

    By Opsis AB based in Furulund, SWEDEN.

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    Emissions Monitoring

    The Opsis monitoring solution in aluminium smelters is based on either DOAS or laser diode technique. The on-line, open-path systems are used for monitoring HF and sulphur dioxide in potrooms, in fence-line applications and in continuous emissions monitoring. Opsis has long experience of monitoring in aluminium smelters.

    By Opsis AB based in Furulund, SWEDEN.

  • Measurement solution for to multi-stream by-pass system

    A large pharmaceutical plant runs a Thermal Oxidiser on plant to incinerate their solvent-containing gas streams before emission. When the oxidiser is offline, then the plant must monitor the release of solvent to the atmosphere. A ProtIR 204C fixed monitoring system was installed that continually measures 24 plant solvents, including Acetone, Cyclohexane, DCM, DMF, IPA, MIBK, Toluene and THF. Given the high levels that are possible, the system has an active dilution system, reducing the concentration of the measured gas in the analyser to levels that can be analysed simply. Chemometric modelling enables interferences from the overlapping absorption spectra to be accounted for, ensuring accurate analysis of all 24 gases.

    By Protea Limited based in Middlewich, UNITED KINGDOM.

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