دورية أكاديمية
Deactivation of a steam reformer catalyst in chemical looping hydrogen systems: experiments and modeling
| العنوان: | Deactivation of a steam reformer catalyst in chemical looping hydrogen systems: experiments and modeling |
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| المؤلفون: | B Stoppacher, F Lonardi, S Bock, M Bele, A Bertucco, V Hacker |
| المصدر: | JPhys Energy, Vol 5, Iss 1, p 014021 (2023) |
| بيانات النشر: | IOP Publishing, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Production of electric energy or power. Powerplants. Central stations LCC:Renewable energy sources |
| مصطلحات موضوعية: | chemical looping hydrogen, biogas reforming, catalyst deactivation, kinetic modeling, Production of electric energy or power. Powerplants. Central stations, TK1001-1841, Renewable energy sources, TJ807-830 |
| الوصف: | The utilization of real producer gases such as raw biogas or gasified wood for chemical looping hydrogen production implies the introduction of harmful contaminants into the process. Hydrogen sulfide represents one of the most challenging trace gases in the reformer steam iron cycle. The aim of the present work was an in-depth investigation of steam reforming with pure methane and synthetic biogas contaminated with selective concentrations of 1, 5 and 10 ppm of hydrogen sulfide. To validate the experimental data, the fixed-bed reactor system was modeled as one-dimensional pseudo-homogeneous plug flow reactor by an adapted Maxted model. In a preliminary thermodynamic study, the dry equilibrium composition was determined within a deviation of 4% for steam methane reforming (SMR) and 2% for synthetic biogas reforming compared to the experimental results. The impact of hydrogen sulfide on the reactivity of the catalyst was characterized by the residual methane conversion. The deactivation rate and extent is directly proportional to the concentration of H _2 S, as higher hydrogen sulfide concentrations lead to a faster deactivation and lower residual methane conversion. A comparison of the methane conversion as a function of sulfur coverage between experimental and simulated data showed good agreement. The predicted results are within |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2515-7655 |
| Relation: | https://doaj.org/toc/2515-7655 |
| DOI: | 10.1088/2515-7655/acb668 |
| URL الوصول: | https://doaj.org/article/ce238a49476b4ecb965fb24613a93c4d |
| رقم الأكسشن: | edsdoj.238a49476b4ecb965fb24613a93c4d |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 25157655 |
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| DOI: | 10.1088/2515-7655/acb668 |