Thermodynamic possibilities and limits for producer gas desulfurization and HCl related interferences for Zn, Mn, Ce and la based sorbents of sulfur compounds

Karel Svoboda (Corresponding author), Miloslav Hartman, Michael Pohořelý, Michal Šyc, Petra Kameníková, Michal Jeremiáš, Liang Wei Huang

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

4 Citations (Scopus)

Abstract

The study is concentrated on thermodynamic analyses of gas desulfurization process (deep removal of H2S, COS, thiophene) by selected solid sorbents (ZnO, MnO, CexOy and La2O3) and on interferences caused by presence of hydrogen halides in a temperature range 500-1100 K. The results show that theoretically Ce2O3 and La2O3 are the best sorbents for sulfur compounds at temperatures above approx. 700 K. The CexOy, La2O3, and MnO based sorbents can suffer from significant interferences caused by higher concentrations of HCl and HF in gas phase. The thermodynamic equilibria suggest that removal of HCl (HF) by soda-based sorbents at temperatures 650 - 850 K is practically without interferences from sulfur compounds. The common alkali carbonates are less suitable than the calcium based (Ca(OH)2, CaCO3) sorbents for deep removal of HF.

Original languageEnglish
Title of host publicationRecent Development in Machining, Materials and Mechanical Technologies
EditorsJyh-Chen Chen, Usuki Hiroshi, Sheng-Wei Lee, Yiin-Kuen Fuh
PublisherTrans Tech Publications Ltd
Pages101-106
Number of pages6
ISBN (Print)9783038354956
DOIs
Publication statusPublished - 2015
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Machining, Materials and Mechanical Technologies, IC3MT 2014 - Taipei City, Taiwan, Province of China
Duration: 31 Aug 20145 Sept 2014

Publication series

SeriesKey Engineering Materials
Volume656-657
ISSN1013-9826

Conference

ConferenceInternational Conference on Machining, Materials and Mechanical Technologies, IC3MT 2014
Country/TerritoryTaiwan, Province of China
CityTaipei City
Period31/08/145/09/14

Keywords

  • Desulfurization
  • Equilibria
  • HCl and HF removal
  • Syngas
  • Thermodynamics

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