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Offshore green hydrogen production process

Emerson provides software and automation technologies
Offshore green hydrogen production process

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Emerson is developing software and systems to enable safe and efficient operation of the world’s first offshore green hydrogen production process Picture: Emerson

Emerson is developing software and systems to enable safe and efficient operation of the world’s first offshore green hydrogen production process on an operational gas platform. The Poshydon project is a pilot that aims to validate the integration of offshore wind power and offshore natural gas and hydrogen production at sea . The Neptune Energy-operated platform Q13a-A in the Dutch North Sea will host the project, which will provide insight into electrolyser efficiency from a variable power supply and the cost of installing and maintaining a green hydrogen production plant on an offshore platform.

Green electricity will be used to simulate the fluctuating supply from wind turbines and power the production process, which will convert sea water into demineralised water and then produce hydrogen via electrolysis. The hydrogen is then blended with the natural gas and transported to the coast, via the existing gas pipeline, and fed into the national gas grid. The 1 MW electrolyser is expected to produce up to three tons of hydrogen per week. “Through the Poshydon project, we – together with the consortium partners – hope to provide a pathway to large-scale offshore green hydrogen production and make a significant contribution to the energy transition process”, said Mark Bulanda, executive president of Emerson’s Automation Solutions business.

Software and automation solutions

Emerson’s DeltaV distributed control system, DeltaV safety instrumented system and DeltaV live operator interface software will manage the desalination and electrolyser units, gas blending and balance of plant equipment. By meeting the unique application challenges, including variable desalinated water feedstock and power supply, DeltaV software and systems will provide enhanced safety, process uptime and operational efficiency. The solution will ensure the existing natural gas operations remain unaffected and blended gas meets its required specification. Integration with the existing offshore systems and communication with onshore operations will maximise process visibility and prevent unforeseen issues.

Poshydon is being developed by consortium partners Nexstep, TNO, Neptune Energy, Gasunie, Noordgastransport, Nogat, Deme Offshore, Taqa, Eneco, Nel Hydrogen, InVesta, Hatenboer, Iv-Offshore & Energy and Emerson. The project has been awarded a €3.6 million grant from The Netherlands Enterprise Agency (RVO) under the agency’s Demonstration Energy and Climate Innovation scheme, which invests in renewable energy developments, including hydrogen pilots.

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