Sulphur removal using regenerable sorbents of rare earth/transition metal oxides

Kalakota, Vikram

doi:10.31390/gradschool_theses.3363

Cited by 3 publications

(2 citation statements)

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“…Data [19]. The data for Ce 2 O 2 S and La 2 O 2 S have been overtaken from other sources [6,[14][15][16]. For removal of HCl and HF from syngas reactions [1,11] with Na 2 CO 3 , K 2 CO 3 , NaAlO 2 (sodium aluminate) and calcium based sorbents (hydroxide and carbonate) have been considered.…”

Section: Chemistry and Thermodynamics Of Desulfurization Hcl And Hf R...mentioning

confidence: 99%

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Thermodynamic Possibilities and Limits for Producer Gas Desulfurization and HCL Related Interferences for Zn, Mn, Ce and La Based Sorbents of Sulfur Compounds

Svoboda¹,

Hartman²,

Pohořelý³

et al. 2015

KEM

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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 over 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.

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Section: Chemistry and Thermodynamics Of Desulfurization Hcl And Hf R...mentioning

confidence: 99%

“…by lack of reliable thermodynamic data (particularly ∆G f ) for solid products of desulfurization (oxy-sulfides), particularly for temperatures below 900 K [14,15]. Also the data for Ce 2 O 2 S and La 2 O 2 S at 298.15 K are scarce and partly disputable [15,16].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Possibilities and Limits for Producer Gas Desulfurization and HCL Related Interferences for Zn, Mn, Ce and La Based Sorbents of Sulfur Compounds

Svoboda¹,

Hartman²,

Pohořelý³

et al. 2015

KEM

View full text Add to dashboard Cite

show abstract

Sulphur removal using regenerable sorbents of rare earth/transition metal oxides

Cited by 3 publications

References 0 publications

Thermodynamic Possibilities and Limits for Producer Gas Desulfurization and HCL Related Interferences for Zn, Mn, Ce and La Based Sorbents of Sulfur Compounds

Thermodynamic Possibilities and Limits for Producer Gas Desulfurization and HCL Related Interferences for Zn, Mn, Ce and La Based Sorbents of Sulfur Compounds

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