A Jiskoot Bunker Blender system is at the heart of an investment programme to upgrade operational capabilities at the Eg3 Refinery near Puerto Galvan, Argentina, by its new owner Petrobras Energia. Jiskoot is also supplying sampling systems for the marine and pipeline reception points. The blender will produce bunker fuels on demand by using a Jiskoot Insight controller housed in a safe area control room near the marine fuels dock. The operator simply enters the required volume and viscosity or selects a stored “recipe” on a touch sensitive screen. This system automatically meters, blends, analyses, corrects and loads the exact viscosity mixture. The system slows down gradually when the pre-established volume is almost complete before closing down and generating a dispatch report. The blender combines an 8in fuel oil line and a 4in diesel oil line, each having strainers, PD meters and actuated modulating butterfly control valves to produce the exact required proportion of the two components, which are then mixed by a pair of 10in static mixers. It also analyses the mixture using a viscometer in a slipstream. Temperature and viscosity information of the blend is fed back to a density converter and the Insight controller, which constantly adjusts the control valves to ensure that the blend is consistent despite changes in line pressures, temperatures or flow rates. Finally, a sampler on the blender takes flow proportional samples of the blend for fiscal proof of the final product quality. This operation is the first of several upgrades planned by Petrobras for the three refineries the company recently purchased in Argentina.
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