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dc.contributor.authorRoussanaly, Simon
dc.contributor.authorAnantharaman, Rahul
dc.contributor.authorLindqvist, Karl
dc.date.accessioned2017-07-06T12:25:01Z
dc.date.available2017-07-06T12:25:01Z
dc.date.created2014-06-02T18:51:50Z
dc.date.issued2014
dc.identifier.citationJournal of Natural Gas Science and Engineering. 2014, 20 38-49.nb_NO
dc.identifier.issn1875-5100
dc.identifier.urihttp://hdl.handle.net/11250/2448081
dc.description.abstractThis paper evaluates three acid gas removal concepts studied in the project “A Green Sea”. Two solvent concepts (aMDEA/MDEA and Selexol) and a low-temperature concept are modelled and assessed, taking different raw natural gases and natural gas product requirements into consideration. The analyses and comparisons of the concepts and cases consider nine criteria in order to include both energy efficiencies and compactness. The assessment shows that acid gas removal using aMDEA/MDEA technology seems to perform well in terms of energy efficiency, volume and weight for low CO2 removal. However, for high CO2 content or strong polishing requirements, the chemical solvent technology loses its efficiency in terms of weight and volume. The assessment shows that the Selexol concept is an inefficient option in terms of energy efficiency, volume and weight, especially when large quantities of CO2 have to be removed from the gas stream. The assessment also shows that the low-temperature technology can be a compact and energy-efficient option, both in the case of strong polishing requirements and high bulk removal of CO2. However, the higher the amount of CO2 to be removed, the less energy efficient is the low-temperature technology. The case evaluation underlines the fact that the aMDEA/MDEA solvent concept exhibits the best or close to the best key performance indicators (KPIs) for all parameters for the RNG1Pipe case (raw natural gas specification 1 to pipeline quality specification) and therefore appears to be the best technology option. For this case, the two other technologies are slightly less energy efficient than the aMDEA/MDEA, but both are significantly less compact. For the RNG1 LNG (raw natural gas specification 1 to LNG quality specification) case, the aMDEA/MDEA and low-temperature concepts have similar KPIs. The chemical solvent technology, however, is slightly more energy efficient and compact and would therefore be preferred for the RNG1 LNG case. Finally, the RNG2 Pipe (raw natural gas specification 2 to pipeline quality specification) case shows that the low-temperature technology can be a compact option for acid gas removal, which is a critical factor in the case of offshore applications for both the equipment costs and the weight constraints on the platform. Despite its lower energy efficiency, it is therefore likely that the low-temperature technology will be selected in the RNG2 Pipe case. This choice is strengthened by some regulations which recommend that solvents such as MDEA and aMDEA should be phased out for offshore applications, as is seen, e.g. in Norway. In addition, if stricter regulations are also enforced for onshore applications, this might also argue in favour of the low-temperature technology or other chemical solvents that are otherwise less efficient than aMDEA/MDEA. Finally, the potential of hybrid concepts is discussed and suggested for future works, in order to combine the advantages of the different technologies, such as the energy-efficient performances of the aMDEA/MDEA concept and the compactness of the low-temperature concept.nb_NO
dc.language.isoengnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleMulti-criteria analyses of two solvent and one low-temperature concepts for acid gas removal from natural gasnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.rights.holderAuthors have copyright to postprint versionnb_NO
dc.source.pagenumber38-49nb_NO
dc.source.volume20nb_NO
dc.source.journalJournal of Natural Gas Science and Engineeringnb_NO
dc.identifier.doi10.1016/j.jngse.2014.05.027
dc.identifier.cristin1135957
dc.relation.projectNorges forskningsråd: 200455nb_NO
cristin.unitcode7548,60,0,0
cristin.unitnameGassteknologi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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