APPLICATION NOTE. Real- time inline process monitoring. Refinery, fuel gas V

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1 APPLICATION NOTE Real- time inline process monitoring Refinery, fuel gas V

2 Real- time inline process monitoring Refinery, fuel gas is used for embedded fuel gas density measurement. Easy to integrate thanks to its small size, certification and wide range of measurement outputs, factory calibrated, provides the quickest response time to gas changes and constitutes the ideal inexpensive alternative to standard measuring methods. is a miniaturized yet robust gas density sensor, suitable for embedded industrial applications. It monitors in real time the, density, & molar mass of gases. is built in a robust package, featuring embedded low power electronics, is factory calibrated & ATEX (ia) certified. Product Mech. configuration Measurements Communication Acquisition rate - ATEX Bypass production line NPT fittings Inline with custody transfer unit (refinery) Raw density,, temperature USB to Computer / 4-20mA to SCADA 1Hz Fuel gas is composed of hydrocarbons i.e. methane, propane, butane, and also can include hydrogen, carbon dioxide. Important source of heat energy, fuel gas can be delivered straight from the plant to cities, industries, for immediate consumption, through pipes or land transportation. Fuel gas is generated through the refining process, varying of composition as a function of changing process conditions and crude oil composition. Specific gravity (S.G.) measurement contributes to the evaluation of fuel gas quality, as an input to gas characterization - such as Wobbe index/calorific value - for the actual calculation of gas heating capability. Specific gravity plays a key role in the gas fiscal transfer / custody transfer metering. V

3 Matching the accuracy & stability of traditional methods A 7 days test, leading to acquisition points was lead together with a traditional custody transfer metering unit installed inline with the, on a bypass line from refining gas pipe. recorded in real-time pressure, temperature and density outputs, internally computing them to obtain compensated density measurements. vs - Specific gravity screenshot 0,6 0,58 0,56 0,54 0,52 0,5 0,48 0,46 0,44 0,42 0,4 2:52 PM 3:07 PM 3:21 PM 3:36 PM 3:50 PM 4:04 PM 4:19 PM vs - Specific gravity screenshot 0,54 0,52 0,5 0,48 0,46 0,44 0,42 0,4 9:50 AM 10:04 AM 10:19 AM 10:33 AM 10:48 AM 11:02 AM 11:16 AM 11:31 AM 11:45 AM V

4 vs - Specific gravity screenshot 0,6 0,58 0,56 0,54 0,52 0,5 0,48 0,46 0,44 0,42 0,4 9:50 AM 10:04 AM 10:19 AM 10:33 AM 10:48 AM 11:02 AM 11:16 AM 11:31 AM 11:45 AM vs - Specific gravity screenshot 0,59 0,57 0,55 0,53 0,51 0,49 0,47 0,45 9:50 AM 10:04 AM 10:19 AM 10:33 AM 10:48 AM 11:02 AM 11:16 AM 11:31 AM 11:45 AM V

5 0,8 0,75 0,7 0,65 0,6 0,55 0,5 0,45 9:50 AM 10:04 AM 10:19 AM 10:33 AM 10:48 AM 11:02 AM 11:16 AM 11:31 AM 11:45 AM Sol vs - Specific gravity screenshot 0,9 0,85 0,8 0,75 0,7 0,65 0,6 10:04 AM 10:19 AM 10:33 AM 10:48 AM 11:02 AM 11:16 AM 11:31 AM 11:45 AM V

6 vs - Specific gravity screenshot 0,74 0,72 0,70 0,68 0,66 0,64 0,62 0,60 10:04 AM 10:19 AM 10:33 AM 10:48 AM 11:02 AM 11:16 AM 11:31 AM 11:45 AM Responses being very similar over the entire test period, comparing both systems point to point leads to the Total Fitting Uncertainties (TFU) shown hereafter. & screenshot - 14:24:00 14:38:24 14:52:48 15:07:12 15:21:36 15:36:00 15:50:24 16:04:48 16:19:12 16:33: V

7 & screenshot - 09:36:00 10:04:48 10:33:36 11:02:24 11:31:12 12:00:00 12:28:48 12:57: & screenshot - 08:38:24 09:07:12 09:36:00 10:04:48 10:33:36 11:02:24 11:31:12 12:00: TFU (%) V

8 & Screenshot - 09:07:12 09:36:00 10:04:48 10:33:36 11:02:24 11:31:12 12:00: TFU (%) & screenshot - 09:21:36 09:50:24 10:19:12 10:48:00 11:16:48 11:45: TFU (%) V

9 & screenshot - 09:36:00 09:50:24 10:04:48 10:19:12 10:33:36 10:48:00 11:02:24 11:16:48 11:31:12 11:45:36 12:00: time TFU (day) (%) & screenshot - 09:21:36 09:50:24 10:19:12 10:48:00 11:16:48 11:45:36 12:14: TFU (%) Typical Fitting Uncertainty Day Day % Day % Day % Day % Day Day % As man can see from the graphs and table above, the two methods provided very similar outputs over 7 days, and excellent stability. V

10 Unrivaled dynamic behavior showed a much faster response to process changes compared to state-of-the-art custody transfer metering methods. This unique feature leads to improved process optimization. Process change 0,53 response to process change : 2 seconds 0,52 0,51 Standard method response to process change : 80 seconds 0,5 0,49 0,48 0,47 15:07:12 15:07:55 15:08:38 15:09:22 15:10:05 As shown on the graph above, the standard metering unit requires up to 80 seconds to adapt to a process change, mainly due to the time needed for the new gas to fill up the measuring chamber. The graph shows that such traditional instrument might not even detect quicker process changes. In the meantime, adapts instantaneously to pulses (<2s) thanks to the reduced dimensions of its measurement chamber, together with a fast response sensing element. response time to process change < 2 seconds V

11 Cutting-edge gas sensing element Easy integration into gas quality analyzers, process lines, lab Plug & play calibrated V