Cristin-resultat-ID: 1118638
Sist endret: 11. mai 2016, 15:01
NVI-rapporteringsår: 2014
Resultat
Vitenskapelig artikkel
2014

Monitoring of continuous PFC formation in small to moderate size aluminium electrolysis cells

Bidragsytere:
  • Henrik Åsheim
  • Thor Anders Aarhaug
  • Alain Marc C Ferber
  • Ole Sigmund Kjos og
  • Geir Martin Haarberg

Tidsskrift

Light Metals
ISSN 0147-0809
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2014
Publisert online: 2104
Sider: 535 - 539
Artikkelnummer: kap. 91

Importkilder

Scopus-ID: 2-s2.0-84899816903

Beskrivelse Beskrivelse

Tittel

Monitoring of continuous PFC formation in small to moderate size aluminium electrolysis cells

Sammendrag

The existence of continuous or non-anode effect formed perfluorocarbons (PFC) has been documented for larger size aluminium electrolysis cells. It has been proposed that less uniformity in dissolved alumina for larger cells may elevate individual anode overvoltage sufficiently to produce PFC. Continuous PFC was monitored after the dry scrubber on a train of 28 cells at a Norwegian smelter. For this work a fourier-transform infrared spectrometer was used. Equipped with a mercury cadmium telluride detector and retrofitted with a 35 m / 11 L measurement cell it was possible to get the detection limit down in the low ppb range needed for this study. It was discovered that also small cells could emit PFC that was not directly related to the full anode effect. Continuous formation of PFC was found to be in the form of CF4, for the most part; however, the results indicate that C2F6 may also form outside the full anode effect. No numerical data for the contribution of non-anode effect emissions to the overall PFC was calculated, nonetheless, judging by the difference in intensity it will be small for this particular smelter.

Bidragsytere

Henrik Åsheim

  • Tilknyttet:
    Forfatter
    ved Institutt for materialteknologi ved Norges teknisk-naturvitenskapelige universitet
Aktiv cristin-person

Thor Anders Aarhaug

  • Tilknyttet:
    Forfatter
    ved Bærekraftig energiteknologi ved SINTEF AS

Alain Marc C Ferber

  • Tilknyttet:
    Forfatter
    ved Smart Sensors and Microsystems ved SINTEF AS

Ole Sigmund Kjos

  • Tilknyttet:
    Forfatter
    ved Metallproduksjon og prosessering ved SINTEF AS

Geir Martin Haarberg

  • Tilknyttet:
    Forfatter
    ved Institutt for materialteknologi ved Norges teknisk-naturvitenskapelige universitet
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