Optical and experimental evaluation of a directly irradiated solar reactor for the catalytic dry reforming of methane
<p dir="ltr">Dry reforming of methane is a process to produce syngas which is a major precursor for many chemicals and ultra-clean fuels. It is a CO<sub>2</sub>-assisted process that leads to the conversion of CO<sub>2</sub> to higher-value products but is als...
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2023
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| _version_ | 1864513538567962624 |
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| author | Tayseir M. Abdellateif (17380381) |
| author2 | Jawad Sarwar (320223) Ekaterini Ch. Vagia (17380384) Konstantinos E. Kakosimos (9863975) |
| author2_role | author author author |
| author_facet | Tayseir M. Abdellateif (17380381) Jawad Sarwar (320223) Ekaterini Ch. Vagia (17380384) Konstantinos E. Kakosimos (9863975) |
| author_role | author |
| dc.creator.none.fl_str_mv | Tayseir M. Abdellateif (17380381) Jawad Sarwar (320223) Ekaterini Ch. Vagia (17380384) Konstantinos E. Kakosimos (9863975) |
| dc.date.none.fl_str_mv | 2023-01-15T06:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.cej.2022.139190 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Optical_and_experimental_evaluation_of_a_directly_irradiated_solar_reactor_for_the_catalytic_dry_reforming_of_methane/24551410 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Chemical sciences Physical chemistry Engineering Chemical engineering Solar energy Ray-tracing Dry reforming methane Experimental design Concentrated light |
| dc.title.none.fl_str_mv | Optical and experimental evaluation of a directly irradiated solar reactor for the catalytic dry reforming of methane |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">Dry reforming of methane is a process to produce syngas which is a major precursor for many chemicals and ultra-clean fuels. It is a CO<sub>2</sub>-assisted process that leads to the conversion of CO<sub>2</sub> to higher-value products but is also a highly endothermic process that requires significant amounts of energy in the form of CO<sub>2</sub> emitting fuels. For these reasons, this study focused on the direct utilization of concentrated solar energy by irradiating the catalyst directly rather than via a heat transfer fluid or conductive heat transfer. In addition, it uniquely adopts a tubular reactor with transparent (quartz) walls configuration, which allows extending the length of the irradiated (hot) zone to control the residence time. The new reactor was designed using Monte-Carlo ray-tracing modeling and evaluated experimentally using a commercial Ni-based catalyst. In brief, the reacting gas mixture (CH<sub>4</sub>:CO<sub>2</sub> − 5 %: 5 %) was fed into the reactor at weight gas hourly space velocities of around 17–58 l h<sup>−1</sup> g<sup>−1</sup> and three different temperature levels (550 °C, 650 °C, and 800 °C). Although the non-conventional mode of heating, the achieved methane conversions (∼93 % at 800 °C to ∼ 53 % at 550 °C) and H<sub>2</sub> / CO ratios (∼0.9 at 800 °C to ∼ 0.4 at 550 °C) were similar to literature studies with the same catalyst. At the same time, the quartz walls showed no degradation after more than 80 h of intermittent testing. On the other hand, the overall energy efficiency was estimated to be less than 1 %, considering the radiation intercepted by the reactor system. However, it rose to 5 % − 25 % when correcting for the actual amount of irradiance on the catalytic bed.</p><h2>Other Information</h2><p dir="ltr">Published in: Chemical Engineering Journal<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.cej.2022.139190" target="_blank">https://dx.doi.org/10.1016/j.cej.2022.139190</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_48831e0b5634fcedba6c1871b4aa3d9f |
| identifier_str_mv | 10.1016/j.cej.2022.139190 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/24551410 |
| publishDate | 2023 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Optical and experimental evaluation of a directly irradiated solar reactor for the catalytic dry reforming of methaneTayseir M. Abdellateif (17380381)Jawad Sarwar (320223)Ekaterini Ch. Vagia (17380384)Konstantinos E. Kakosimos (9863975)Chemical sciencesPhysical chemistryEngineeringChemical engineeringSolar energyRay-tracingDry reforming methaneExperimental designConcentrated light<p dir="ltr">Dry reforming of methane is a process to produce syngas which is a major precursor for many chemicals and ultra-clean fuels. It is a CO<sub>2</sub>-assisted process that leads to the conversion of CO<sub>2</sub> to higher-value products but is also a highly endothermic process that requires significant amounts of energy in the form of CO<sub>2</sub> emitting fuels. For these reasons, this study focused on the direct utilization of concentrated solar energy by irradiating the catalyst directly rather than via a heat transfer fluid or conductive heat transfer. In addition, it uniquely adopts a tubular reactor with transparent (quartz) walls configuration, which allows extending the length of the irradiated (hot) zone to control the residence time. The new reactor was designed using Monte-Carlo ray-tracing modeling and evaluated experimentally using a commercial Ni-based catalyst. In brief, the reacting gas mixture (CH<sub>4</sub>:CO<sub>2</sub> − 5 %: 5 %) was fed into the reactor at weight gas hourly space velocities of around 17–58 l h<sup>−1</sup> g<sup>−1</sup> and three different temperature levels (550 °C, 650 °C, and 800 °C). Although the non-conventional mode of heating, the achieved methane conversions (∼93 % at 800 °C to ∼ 53 % at 550 °C) and H<sub>2</sub> / CO ratios (∼0.9 at 800 °C to ∼ 0.4 at 550 °C) were similar to literature studies with the same catalyst. At the same time, the quartz walls showed no degradation after more than 80 h of intermittent testing. On the other hand, the overall energy efficiency was estimated to be less than 1 %, considering the radiation intercepted by the reactor system. However, it rose to 5 % − 25 % when correcting for the actual amount of irradiance on the catalytic bed.</p><h2>Other Information</h2><p dir="ltr">Published in: Chemical Engineering Journal<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.cej.2022.139190" target="_blank">https://dx.doi.org/10.1016/j.cej.2022.139190</a></p>2023-01-15T06:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.cej.2022.139190https://figshare.com/articles/journal_contribution/Optical_and_experimental_evaluation_of_a_directly_irradiated_solar_reactor_for_the_catalytic_dry_reforming_of_methane/24551410CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/245514102023-01-15T06:00:00Z |
| spellingShingle | Optical and experimental evaluation of a directly irradiated solar reactor for the catalytic dry reforming of methane Tayseir M. Abdellateif (17380381) Chemical sciences Physical chemistry Engineering Chemical engineering Solar energy Ray-tracing Dry reforming methane Experimental design Concentrated light |
| status_str | publishedVersion |
| title | Optical and experimental evaluation of a directly irradiated solar reactor for the catalytic dry reforming of methane |
| title_full | Optical and experimental evaluation of a directly irradiated solar reactor for the catalytic dry reforming of methane |
| title_fullStr | Optical and experimental evaluation of a directly irradiated solar reactor for the catalytic dry reforming of methane |
| title_full_unstemmed | Optical and experimental evaluation of a directly irradiated solar reactor for the catalytic dry reforming of methane |
| title_short | Optical and experimental evaluation of a directly irradiated solar reactor for the catalytic dry reforming of methane |
| title_sort | Optical and experimental evaluation of a directly irradiated solar reactor for the catalytic dry reforming of methane |
| topic | Chemical sciences Physical chemistry Engineering Chemical engineering Solar energy Ray-tracing Dry reforming methane Experimental design Concentrated light |