Cristin-resultat-ID: 1152987
Sist endret: 23. oktober 2017, 15:24
NVI-rapporteringsår: 2014
Resultat
Vitenskapelig artikkel
2014

Influence of experimental setup on amine degradation

Bidragsytere:
  • Solrun Johanne Vevelstad
  • Andreas Magnar Grimstvedt
  • Hanna Knuutila
  • Eirik Falck da Silva og
  • Hallvard Fjøsne Svendsen

Tidsskrift

International Journal of Greenhouse Gas Control
ISSN 1750-5836
e-ISSN 1878-0148
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2014
Volum: 28
Sider: 156 - 167
Open Access

Importkilder

Scopus-ID: 2-s2.0-84904297911

Beskrivelse Beskrivelse

Tittel

Influence of experimental setup on amine degradation

Sammendrag

Chemical stability of amines under CO2 capture conditions is a well known problem both for process operability and related to economy and environmental issues. Many degradation studies have been conducted under different conditions and in different apparatuses. In this work the chemical stability of a set of amines and their degradation products using 3 different setups have been studied. A new degradation compound for 2-ethanolamine (MEA), N-(2-hydroxyethyl)-2-[(2-hydroxyethyl)amino]-acetamide (HEHEAA) was quantified resulting in a total of 21 degradation compounds for MEA. Liquid phase metal and gas phase oxygen concentrations, temperature and volatility of degradation products (intermediates) all influence degradation and differences in results from the various apparatuses are observed. Conditions favouring formation of primary degradation compounds are difficult to identify and explain, but generally low metal and oxygen concentrations and temperature reduce their formation. For some of the secondary degradation compounds volatility of intermediates was an issue and higher formation rates were seen in the closed setup which preserved more of these products in the solvent compared to the open setup with gas throughput. Amines believed to form volatile degradation compounds showed lower chemical stability in the open setup compared to the closed setup. A new mechanism for the important degradation product N-(2-hydroxyethyl)-glycine (HEGly) is suggested.

Bidragsytere

Solrun Johanne Vevelstad

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

Andreas Magnar Grimstvedt

  • Tilknyttet:
    Forfatter
    ved Prosessteknologi ved SINTEF AS

Hanna Knuutila

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

Eirik Falck da Silva

  • Tilknyttet:
    Forfatter
    ved Prosessteknologi ved SINTEF AS

Hallvard Fjøsne Svendsen

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