Tech Talk: SCAVenger OPtimization

Oil and gas produced offshore in the Danish North Sea naturally contain hydrogen sulfide – H2S, which is very toxic and corrosive. In order to remove it, chemicals – H2S scavengers – are injected in multiphase streams (containing gas, oil and water) and in the gas stream prior to export. In gas-phase scavenging, an aqueous solution of MEA-triazine (i.e., the scavenger) is dispersed into the gas stream where it reacts with H2S in co-current configuration. H2S absorbs into the liquid droplets where it reacts with the scavenger, giving by far less harmful species. The process is however not unproblematic, with consumptions of MEA-triazine well above the stoichiometric requirements and scavenging efficiencies varying to a large extent in different topside offshore installations. The reasons for these large differences are not well understood and the process is typically designed empirically. The main goal of the SCAVOP project is to develop a simulation model able to describe the absorption-reaction process in gas-phase scavenging and to predict the process outcome depending on the operating conditions (e.g., gas pressure and temperature, amount of scavenger injected, residence time of the scavenger in the pipes, etc.). The model that has been developed so far is based on novel experimental data of the kinetics of the reaction between H2S and MEA-triazine, which were acquired at Aalborg University by means of a novel method based on Raman Spectroscopy. The learnings of the project are translated into recommendations to industry operators on how to improve the scavenging processes.

(FYI! The webinar will be conducted in english)

Moderator:
Line Louise Overgaard, Project Manager, Energy Cluster Denmark

Presenters:

Introduction and presentation of presenters
by Line Louise Overgaard, Project Manager, Energy Cluster Denmark

Definition of the technical and research problems
by Marco Maschietti, Associate Professor, Aalborg University

Kinetics of aqueous phase reactions
by Iveth Romero, PhD Student, Aalborg University

(3 min VIDEO) Video of the unit realized in Mouritsen. The pilot unit for absorption of sour gas in basic aqueous solutions.

Pilot unit presentation – Key results
by Martin Bæk, Lead Engineer Offshore Energy, MOURITSEN a/s
& Fernando Montero, PhD Student, Aalborg University

Industry recommendations based on SCAVOP research results and literature analysis
by Anders Andreasen, Technical Manager, Process, Ramboll

Discussion and Q&A
Moderated by Line Louise Overgaard, Project Manager, Energy Cluster Denmark

Scientific and technology gaps for further studies
by Marco Maschietti, Associate Professor, Aalborg University

Thank you all + whats next + where to get more information?
by Line Louise Overgaard, Project Manager, Energy Cluster Denmark

(FYI! a TEAMs links will be sent out to the registered participants, the day before the event)