Case Study N°NG4 – energyMedor– updated: 04.03.21 Case Study Deodorization process monitoring Analysis and quantification of H2S with energyMEDOR Context & Challenges Steam reforming is a process used to produce high amounts of Hydrogen from methane. In this case, we have to obtain a superior quality of methane and purify it from all odorant compounds present in natural gas. To ensure the accuracy of the deodorization process, it’s needed to monitor the amount of sulfur compounds emitted while being separated from the natural gas; but how to analyze this compound, in such a moisturized and complex matrix? Chromatotec® Solutions Chromatotec solution quantify Hydrogen Sulfide at high (low ppm directly into natural gas pipe) and very low (low ppb after deodorization process) concentrations. This dual range system works with two different volume of sampling loops. The analyzer automatically switches between the two sampling ways to avoid the saturation of the system and/or signal. Instrument: energyMEDOR The energyMEDOR is capable of analyzing H2S, mercaptans, DMS and/or total reduced sulfurs by collecting directly the sample, into the vent. Then, all the molecules are separated by chromatography and detected at a very low level (ppb and/or ppm). In this specific case, the energyMEDOR is equipped with two sampling loops adapted to two different ranges of concentrations (0-1 mg/Nm3 to 0-50 mg/Nm3) and integrated in an ATEX certified cabinet. Thanks to its internal calibration system, the results are validated automatically and there is no need of manual intervention. The LCD color touchscreen allows the user to view and edit the results directly in front of the analyzer without opening it. The data are also automatically exported to a supervision room, where the user is able to switch manually between the two sampling ways instead of automatic mode. The energyMEDOR detects Sulfur compounds, thanks to a long-life sulfur (up to 10 years) specific Electrochemical Detector (ED). Here below some example of the analyzed sulfur compounds: Example Hydrogen Sulfide (H2S) Methyl Mercaptan (MM) Ethyl Mercaptan (EM) Dimethyl Sulfide (DMS) Dimethyl Di-Sulfide (DMDS) Iso Propyl Mercaptan (IPM) Tert Butyl Mercaptan (TBM) N Propyl Mercaptan (NPM) Tetra Hydro Thiophene (THT) Iso-Butyl Mercaptan (IBM) N-Butyl Mercaptan (NBM) Total Sulfur by sum Analyzer energyMEDOR analyses individual compound and total sulfur by the sum of all the compounds. [email protected] www.chromatotec.com Online Liquid and Gas Analyzer Ex

Case Study N°NG4 – energyMedor– updated: 04.03.21 Chromatogram obtained with energyMEDOR® Chromatogram obtained with energyMEDOR® on natural gas sample with odorants (THT and H2S) No auxiliary gas needed for operation and calibration Only N2 or air consumption (Nitrogen generator from instrument air in option) No required flammable gases to analyzer Integrated sampling pump enables analysis of atmosphere pressure sample Pressurized samples, don’t need any sampling pump Automatic internal calibration with certified permeation tubes at ppm level energyMEDOR also available in Ex Cabinet Data acquisition...