Pipelines used to transport produced gas have quality restrictions related to content of water, carbon dioxide (CO2), hydrogen sulfide (H2S) and heavy hydrocarbons. If these requirements cannot be met by the well flow, separation is required either topside or subsea. Today on a typical platform, water is removed by Triethylene glycol while CO2 and H2S is removed by amine processes.

Simplifying the chemical systems or moving equipment and process elements subsea could be a way to ensure better energy efficiency and utilization of the resources. The objective of this project is to develop a regenerative process where hydrate formation is controlled and H2S is removed by employment of, for example, an amine-glycol solvent. Since this would be a regenerative process, significantly higher concentrations of H2S could be treated than what normally is the case with e.g. triazine. The work will contain both modelling and experimental studies.

The PhD candidate, Eirini Skylogianni, has won an award at the Student Poster Competition at the Techno-Ocean 2016 Conference in Japan. 

Link to a bloggpost about the project (in Norwegian)