H2S conversion in a tubular flow reactor: experiments and kinetic modeling

Colom Díaz, Juan Manuel (Universidad de Zaragoza) ; Abián, María (Universidad de Zaragoza) ; Ballester, M.Y. (Universidad de Zaragoza) ; Millera, Ángela ; Bilbao, Rafael (Universidad de Zaragoza) ; Alzueta, Uxue (Universidad de Zaragoza)

Resumen: Oxidation of H2S at atmospheric pressure has been studied under different reaction atmospheres, varying the air excess ratio (lambda) from reducing lambda=0.32) to oxidizing conditions lambda=19.46). The experiments have been carried out in a tubular flow reactor, in the 700-1400¿K temperature range. The concentrations of H2S, SO2 and H2 have been determined and the experimental results have been simulated with a detailed chemical mechanism compiled in the present work. The experimental results obtained indicate that H2S consumption is shifted to lower temperatures as the stoichiometry increases, starting at 925K for reducing conditions and at 700K for the most oxidizing ones. The model reproduces well, in general, the experimental data from the present work, and those from the literature at high pressures. Supported by theoretical calculations, the isomerization of HSOO to HSO2 has been determined as an alternative and possible pathway to the final product SO2, from the key SH+O2 reaction.

Idioma: Inglés

DOI: 10.1016/j.proci.2018.05.005

Año: 2019

Publicado en: PROCEEDINGS OF THE COMBUSTION INSTITUTE 37, 1 (2019), 727-734
ISSN: 1540-7489

Factor impacto JCR: 5.627 (2019)

Categ. JCR: ENERGY & FUELS rank: 22 / 112 = 0.196 (2019) - Q1 - T1
Categ. JCR: THERMODYNAMICS rank: 4 / 61 = 0.066 (2019) - Q1 - T1
Categ. JCR: ENGINEERING, MECHANICAL rank: 8 / 130 = 0.062 (2019) - Q1 - T1
Categ. JCR: ENGINEERING, CHEMICAL rank: 17 / 143 = 0.119 (2019) - Q1 - T1

Factor impacto SCIMAGO: 2.116 - Chemical Engineering (miscellaneous) (Q1) - Physical and Theoretical Chemistry (Q1) - Mechanical Engineering (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/GPT
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BES-2016-076610
Financiación: info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-65226

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)
Área (Departamento): Área Tecnologi. Medio Ambiente (Dpto. Ing.Quím.Tecnol.Med.Amb.)