A process simulation study of hydrogen and sulfur production from hydrogen sulfide using the Fe–Cl hybrid process

Adewale, Rasheed; Berrouk, Abdallah S.; Dara, Satyadileep

doi:10.1016/j.jtice.2015.03.018

Cited by 19 publications

(9 citation statements)

References 17 publications

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“…In a Fe-Cl hybrid process, Fe 3+ ions oxidize H 2 S to form H 2 and S (eqs and ). Then, the formed Fe 2+ ions in FeCl 3 aqueous solution were reoxidized into Fe 3+ at the anode (eq ) along with H 2 SO 4 as a byproduct . The concentration of H 2 SO 4 is generally kept at 0.1–5 mol/L.…”

Section: Catalytic Splitting Of H2smentioning

confidence: 99%

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Zheng,

Lei,

Wang

et al. 2023

ACS Catal.

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Hydrogen sulfide (H 2 S) is a notorious and lethal gas widely generated in human economic activities and natural occurrences. The growing demand for pollution control makes it vital for the development of efficient processes to remove and convert H 2 S into high-valued products. As such, diversified technologies have been extensively explored, including H 2 S splitting, selective oxidation of H 2 S, and simultaneous conversion of H 2 S and CO 2 . In this review, the state-of-the-art processes for H 2 S conversion and utilization are reviewed. The potentials of various value-added products from H 2 S utilization, such as H 2 , syngas, COS, CH 3 SH, and other sulfur-containing fine chemicals are elucidated in detail. Notably, the traditional and emerging materials for H 2 S removal, mainly including metal oxide catalysts and carbon-based materials are also overviewed in this review. In addition, the catalytic mechanisms for these desulfurization reactions are also briefly discussed. Lastly, perspectives are given on the viability and technological gaps for each technology and corresponding catalysts.

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Section: Catalytic Splitting Of H2smentioning

confidence: 99%

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Zheng,

Lei,

Wang

et al. 2023

ACS Catal.

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“…However, it is challenging to decompose hydrogen sulfide to obtain hydrogen as it requires high temperature, >1000 K [9]. Catalytic pathway for thermally decomposing H 2 S has shown great efficiency, while providing an opportunity to recover the produced hydrogen [10]. Other methods including thermochemical process, photocatalytic approach, electrolysis, hydrolysis and reactive adsorption have also been attempted, showing great potentials for hydrogen recovery and high sulfur recovery rate, but they are all still in their infancy [9,[11][12][13]].…”

Section: Introductionmentioning

confidence: 99%

Investigating efficiency improvement in sulfur recovery unit using process simulation and numerical modeling

Fazlollahi

Asadizadeh

Khoshooei

et al. 2021

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Hydrogen sulfide exists mostly as a detrimental byproduct in the gas processing units as well as refineries, and it must be eliminated from natural gas streams. In a Sulfur Recovery Unit (SRU), hydrogen sulfide is converted into the elemental sulfur during the modified Claus process. Efficiency of sulfur recovery units significantly depends on the reaction furnace temperature. In this work, the effect of oxygen and acid gas enrichment on the reaction furnace temperature and accordingly on sulfur recovery is studied, using both numerical modeling and process simulation. Then, simulation and numerical model are benchmarked against the experimental data of an SRU unit. The validated model provides spotlight on optimizing the upstream sulfur removal unit as well as the oxygen purification process. Two cases of acid gas streams with low and high H2S content, 30% and 50%, are studied to investigate the effect of operating parameters on the overall recovery. Finally, average errors of the models are presented. According to the absolute difference with experimental values, the developed numerical model shows great potential for accurately estimating overall efficiency of the recovery unit.

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“…However, commercial hydrogen production technologies, such as natural gas reforming, have a much lower hydrogen prodcution cost (PC) than the proposed one. Process simulation of the electrolytic cycle of H 2 S splitting has also been recently investigated by Adewale et al, [ 21 ] with Fe 2+ /Fe 3+ as electrolytes. Sensitivity analysis on the process variables such as ferric ion flowrate, HCl concentration, and absorber temperature showed different trends.…”

Section: Introductionmentioning

confidence: 99%

Techno‐Economic Evaluation of Photocatalytic H₂S Splitting

et al. 2021

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The removal of the noxious H2S from natural gas remains a challenging task in the oil and gas industry. Different H2S splitting technologies are proposed and investigated based on the techno‐economic analysis. Herein, the photocatalysis route for H2S splitting represents a potential technology that is not yet fully analyzed. The present study reports a techno‐economic analysis of hydrogen production from H2S via photocatalysis. Guided by the previous experimental result on H2S splitting, Aspen Plus software is used to design and simulate the proposed plant. An economic analysis is performed with CapCost software to estimate the plant capital expenditure (CAPEX) and operational expenditure (OPEX) and the cost of hydrogen production. At 0.485 t H2 per h, the process CAPEX is about 105 M$, and OPEX is 143 M$ per year. At a levelized cost of hydrogen (LCOH) production of 1860 $ per t H2, the proposed plant will be able to break even at the end of the plant life. Sensitivity analysis reveals that the process OPEX and price of hydrogen are strongly dependent on the cost of aqueous NaOH. These findings are potentially useful for oil and gas industries looking to incorporate an emerging technology like the presented one in refineries.

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A process simulation study of hydrogen and sulfur production from hydrogen sulfide using the Fe–Cl hybrid process

Cited by 19 publications

References 17 publications

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Investigating efficiency improvement in sulfur recovery unit using process simulation and numerical modeling

Techno‐Economic Evaluation of Photocatalytic H₂S Splitting

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A process simulation study of hydrogen and sulfur production from hydrogen sulfide using the Fe–Cl hybrid process

Cited by 19 publications

References 17 publications

Advances in Resources Recovery of H2S: A Review of Desulfurization Processes and Catalysts

Advances in Resources Recovery of H2S: A Review of Desulfurization Processes and Catalysts

Investigating efficiency improvement in sulfur recovery unit using process simulation and numerical modeling

Techno‐Economic Evaluation of Photocatalytic H2S Splitting

Contact Info

Product

Resources

About

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Techno‐Economic Evaluation of Photocatalytic H₂S Splitting