Commercial Operation with Exclusive Measurements
The operation was split into two phases. In the first phase fluid was circulated from the carrier high manifold, through the IQuay system, and back into the carrier lower manifold. All process data was logged for the purpose of calculating the friction factor of the floating hoses. In the second phase of the operation, the IQuay completed commercial offloading to onshore storage tanks between Gasum and Air Liquide Skagerak.
At the Herøya Industripark CO2 quay a floating barge was moored containing a spool piece to enable circulation through the system, and a cryogenic composite hose connected the IQuay system to Air Liquide Skagerak’s onshore terminal. The IQuay was deployed to the Anthony Veder carrier, moored offshore from the beach, and successfully connected to commence both the loading of fluid to the onshore terminal and for purposes of circulation from the vessel through the IQuay system and back to the vessel.
With two valves on each barge header, one valve at the nitrogen exhaust and one valve on the barge spool piece, all tasks could be performed by changing the valve configuration. To obtain the friction factor the floating hoses were arranged to measure the pressure drop over the two individual hose lengths while circulating fluid from the starboard side, over the barge and back over the port side of the platform.
Two flow meters with associated straight spool pieces and flow conditioner plates were installed at each side of the u-shaped spool piece on the barge. The flow conditioner plate was installed upstream followed by the straight spool piece to improve the flow profile at the downstream ultrasonic flow meter and hence improve the flow measurements. The temperature was accurately measured at strategic intervals. Pressure loss through the flexible pipe and IQuay system in general was measured using differential pressure sensors verified by individual pressure sensors along the line.
“The ship to shore transfer with the floating IQuay was an opportunity to further prove the capabilities of the system. The cargo delivery and analysis verified the system process performance and provided us with exclusive insight into the performance of floating, flexible hoses,” said ECONNECT Energy Project Manager Jørgen Agerup.
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