The effect of temperature and carbonyl sulphide on carbon deposition on 20Cr25Ni stainless steel

Research output: Contribution to journalArticle

Authors

  • Peter Smith
  • Brian Connolly
  • Neal Smith
  • Pearson Lesley
  • Clive Mowforth

Colleges, School and Institutes

External organisations

  • Rolls Royce PLC
  • EDF ENERGY NUCLEAR GENERATION LIMITED

Abstract

In this paper the results of a systematic study of the effect of temperature and COS concentration on the formation of carbon deposits on a 20Cr25Ni austenitic stainless steel under a depositing gas of 1000 vppm ethene in 1%CO/CO2 have been presented. Carbon deposits were found over the temperature range of 550 to 725ºC after 4 hours exposure. COS additions to the ethene-bearing gas inhibited the deposition process but the effect was concentration and temperature dependent. The results have been interpreted in terms of the oxidation process and the adsorption of sulphur on the catalytic Ni-rich particles.

Details

Original languageEnglish
Pages (from-to)667–678
JournalOxidation of Metals
Volume87
Issue number5
Early online date7 Feb 2017
Publication statusPublished - Jun 2017

Keywords

  • Carbon inhibition, Stainless steel, Carbon deposition, COS