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RAS Chemistry & Material ScienceХимическая физика Advances in Chemical Physics

  • ISSN (Print) 0207-401X
  • ISSN (Online) 3034-6126

Thermodynamic assessment of conversion modes of acid gases/methane mixture for syngas production

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PII
S0207401X25040027-1
DOI
10.31857/S0207401X25040027
Publication type
Article
Status
Published
Authors
M. V. Tsvetkov
  • Affiliation: Federal Research Center for Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences
Volume/ Edition
Volume 44 / Issue number 4
Pages
11-18
Abstract
A thermodynamic assessment of the modes of non-catalytic conversion of acid gases and methane to produce syngas was carried out. The air and steam-air conversion modes of a mixture of hydrogen sulfide, carbon dioxide and methane were studied. Model compositions of gases with different contents of hydrogen sulfide (10, 20 and 30 vol.%) and methane (depending on the stoichiometric fuel excess coefficient) were considered. It has been shown that high temperature leads up the conversion of reagents and the syngas formation. With an increase in the amount of methane, the yield of hydrogen increased over the entire temperature range under consideration (1273–1873 K), but conversion rate of hydrogen sulfide decreased significantly. Increasing the amount of hydrogen sulfide in the initial mixture reduces the yield of synthesis gas. Adding water vapor in amounts up to 5 vol.% leads to an increase in the syngas yield and the [H2]/[CO] ratio. The maximum ratio H2/CO = 2.1 was achieved during air conversion of a mixture with 10 vol.% hydrogen sulfide with the same amount of CO2 with a stoichiometric fuel excess ratio of 10 and T = 1873 K.
Keywords
кислые газы сероводород диоксид углерода конверсия синтез-газ водород термодинамика
Date of publication
15.09.2025
Year of publication
2025
Number of purchasers
0
Views
6

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