Study of the reaction of high-temperature H2S decomposition on metal oxides (γ-Al2O3,α-Fe2O3,V2O5)

Reshetenko, Tatyana V.; Khairulin, S. R.; Ismagilov, Z. R.; Kuznetsov, V. Ya.

doi:10.1016/s0360-3199(01)00143-4

Cited by 98 publications

(51 citation statements)

References 18 publications

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“…The results of this section of experiments are in agreement with the outcome of other references dealing with high-temperature H 2 S decomposition, 29 H 2 S reaction to metal oxides, 30,31 and H 2 S-iron interactions. Based upon the H 2 S mode, the desulfurization efficiency was optimum in the range of 1200-1400 C, and it was the minimum amount in the domains away from this range.…”

Section: Effect Of Final Temperaturesupporting

confidence: 90%

Optimization of operating conditions in desulfurization of petroleum coke using induction heating

Pourabdollah

Zakaria

Najafizadeh

2020

Asia-Pacific J Chem Eng

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The matrix structure and properties of petcoke samples can be impressed by uniform and in situ thermal treatment. In this work, a novel hyphenated thermal approach was applied to investigate the ferromagnetic-based desulfurization of petcoke samples and the effect of controlling parameters. Induction heating furnace and capillary gas chromatography (CGC) were designed and assembled to study the thermal desulfurization of ferromagnetic petcoke, which was prepared by penetration of some metallic elements (e.g., Fe, Cr, and Ni) into the coke framework. Based upon a design of experiment algorithm, the petcoke matrix, the evolved gases and the residue coke breeze were monitored by energy-dispersive X-ray spectroscopy mapping, CGC, and electrical resistivity measurements. The results revealed that during petcoke formation, ferromagnetic metals were diffused and distributed throughout the coke matrix leading to the acceleration of the induction heating in the second stage of thermal treatment. Moreover, the evolved gas analysis showed the role and the rank of drainage rate, particle size, desulfurization temperature, induction frequency, and feed humidity parameters on the yield of desulfurization process. The effect of magnetic desulfurization on the specific electrical resistivity of coke breeze was identified as an industrial opportunity to be used in the cathodic protection systems. K E Y W O R D Sferromagnetic desulfurization, induction heating, electrical resistivity, EDX mapping

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Section: Effect Of Final Temperaturesupporting

confidence: 90%

Optimization of operating conditions in desulfurization of petroleum coke using induction heating

Pourabdollah

Zakaria

Najafizadeh

2020

Asia-Pacific J Chem Eng

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“…Their experimental results -obtained for different temperatures of the catalyst-, show the dissociative character of the component 2 H S . Similar results were reported by Reshetenko et al [7], who investigated experimentally the heterogeneous reaction of decomposition of the hydrogen sulfide on bulk oxides 2 3 Al O , 2 3 Fe O and 2 5 V O in the interval of temperature 500 900 C . Generally, in these studies, the central objective is focused on the design of membrane reactors that offer evident advantages for the hydrogen production by means of the direct decomposition of Therefore, in this analysis we treat theoretically the conversion process of hydrogen sulfide into atomic hydrogen for a binary gas mixture of methane and hydrogen sulfide, which is circulating under laminar conditions in a horizontal channel made of iron walls.…”

Section: Co Can Be Found In Different Ref-supporting

confidence: 85%

Heterogeneous Decomposition of a Hydrogen Sulfide-Methane Sour Mixture Flowing in a Rectangular Channel

Martínez¹,

Méndez²,

Treviño³

2008

TOCENGJ

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Abstract:In this work, we analyze the heterogeneous conversion process of hydrogen sulfide acid, H 2 S , to atomic hydrogen, H 0 , in a binary gas mixture composed by the above acid component and methane gas. We consider that the sour mixture flows in a horizontal rectangular channel under a laminar, hydrodynamically fully-developed flow regime and the decomposition process takes place on the internal walls of the channel made by iron. The heterogeneous chemical activity on the metallic walls is conducted by a reactive scheme based on four reactions: one adsorption, two electrochemical, and an exothermic reaction needed to complete the conversion process. The longitudinal profiles of the species H 2 S and H 0 on the surfaces of the channel as functions of the nondimensional parameters involved in the present model, are shown. In addition, the surface coverages of the chemical products HS , H + and H 0 , together with the surface coverage of the vacancies derived from the chemical and electrochemical reactions are presented.

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“…Based on the adsorption results, we can infer that a similar decomposition mechanism of H 2 S on metallic Fe surface could be obtained as well, which will be considered further in the following sections. [19,20] and experiment [18] (Table 7), it can be drawn that our calculation methods can accurately describe the dehydrogenation process on the perfect surface. Two dehydrogenation steps happen with the barrier energies of 0.43 eV and 1.27 eV, and overall reaction exothermicity of 0.76 eV as illustrated in Fig.…”

Section: Resultsmentioning

confidence: 88%

“…Davydov et al [17] observed that SH -anions served as a highly reactive intermediate during the interaction between H 2 S and Fe 2 O 3 . Kinetics analysis of reaction between H 2 S and Fe 2 O 3 surface has been conducted by Reshetenko et al [18], and results suggested that the reaction order and active energy were 2.6 and 103 kJ/mol, respectively. Nevertheless, experimental information is not always sufficient for detailed understanding of the interaction process.…”

Section: Introductionmentioning

confidence: 99%

H2S adsorption and decomposition on the gradually reduced α-Fe2O3(001) surface: A DFT study

Lin

Chen

2016

Applied Surface Science

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Study of the reaction of high-temperature H2S decomposition on metal oxides (γ-Al2O3,α-Fe2O3,V2O5)

Cited by 98 publications

References 18 publications

Optimization of operating conditions in desulfurization of petroleum coke using induction heating

Optimization of operating conditions in desulfurization of petroleum coke using induction heating

Heterogeneous Decomposition of a Hydrogen Sulfide-Methane Sour Mixture Flowing in a Rectangular Channel

H2S adsorption and decomposition on the gradually reduced α-Fe2O3(001) surface: A DFT study

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