NO emission from non-premixed MILD combustion of biogas-syngas mixtures in opposed jet configuration.
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| Title: | NO emission from non-premixed MILD combustion of biogas-syngas mixtures in opposed jet configuration. |
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| Authors: | Boussetla, Selsabil1,2 (AUTHOR), Mameri, Abdelbaki1,2 (AUTHOR) mameriabdelbaki@yahoo.fr, Hadef, Amar2 (AUTHOR) |
| Source: | International Journal of Hydrogen Energy. Oct2021, Vol. 46 Issue 75, p37641-37655. 15p. |
| Subjects: | Biogas, Methane as fuel, Combustion, Combustion kinetics, Strain rate, Chemical kinetics |
| Abstract: | In this paper NO emission from MILD combustion of the mixture biogas-syngas is deeply elucidated, five NO routes were considered, specifically: thermal, prompt, NNH, N 2 O and reburning. Several operating conditions are studied namely: fuel mixture composition, oxygen concentration in the oxidizer and injection velocity or strain rate. Biogas is modeled by a mixture of methane and carbon dioxide; while, syngas is considered to be composed by hydrogen and carbon monoxide, this gives a fuel mixture of CH 4 /CO 2 /H 2 /CO. Volume of methane and hydrogen are varied alternatively from 0 to 50% in fuel mixture. Oxidizer is composed by O 2 /N 2 mixture where oxygen volume is increased from 4 to 21%. Finally, injection strain rate is varied from apparition to vanishment of combustion. Atmospheric pressure is considered with constant fuel and oxidizer injection temperatures of 300 K and 1200 K respectively. Chemical kinetics of such complicated system is handled by a composed mechanism from the USC C 1 –C 4 and the Gri 2.11 N-sub mechanism. It is found that under MILD regime, temperature intervals and levels are enhanced by hydrogen compared to methane. Furthermore, temperature levels keep relatively low which guarantees MILD regime. Contrariwise, when oxygen increases in oxidizer, temperature grows up rapidly and the MILD regime disappears. However, if strain rate augments, temperature shows a steep increase then reduces monotonically. It is observed that for low methane volume in the fuel mixture, NNH route dominates NO production. Whereas, when CH 4 increases, the prompt route is enhanced and exceeds NNH one at a methane volume of 12%. When hydrogen increases, prompt and NNH routes are enhanced with a domination of the prompt route until 44% of hydrogen volume. Oxygen increasing in the oxidizer improves thermal mechanism which surpasses prompt one at 17% of oxygen volume and governs NO production. Globally, the third most important route in NO production is the reburning one which is enhanced by all parameters except strain rate. • Chemical kinetics of MILD combustion of mixture biogas-syngas is complicated. • Increase of methane or hydrogen in mixture preserves MILD combustion regime. • Oxygen augmentation in oxidizer increases thermal NO and breaks down MILD regime. • NNH route is enhanced by hydrogen addition whereas prompt one by methane increase. • Injection velocity increase reduces NO emission and maintains MILD regime. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 153070643 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: NO emission from non-premixed MILD combustion of biogas-syngas mixtures in opposed jet configuration. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Boussetla%2C+Selsabil%22">Boussetla, Selsabil</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mameri%2C+Abdelbaki%22">Mameri, Abdelbaki</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> mameriabdelbaki@yahoo.fr</i><br /><searchLink fieldCode="AR" term="%22Hadef%2C+Amar%22">Hadef, Amar</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Hydrogen+Energy%22">International Journal of Hydrogen Energy</searchLink>. Oct2021, Vol. 46 Issue 75, p37641-37655. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Biogas%22">Biogas</searchLink><br /><searchLink fieldCode="DE" term="%22Methane+as+fuel%22">Methane as fuel</searchLink><br /><searchLink fieldCode="DE" term="%22Combustion%22">Combustion</searchLink><br /><searchLink fieldCode="DE" term="%22Combustion+kinetics%22">Combustion kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Strain+rate%22">Strain rate</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In this paper NO emission from MILD combustion of the mixture biogas-syngas is deeply elucidated, five NO routes were considered, specifically: thermal, prompt, NNH, N 2 O and reburning. Several operating conditions are studied namely: fuel mixture composition, oxygen concentration in the oxidizer and injection velocity or strain rate. Biogas is modeled by a mixture of methane and carbon dioxide; while, syngas is considered to be composed by hydrogen and carbon monoxide, this gives a fuel mixture of CH 4 /CO 2 /H 2 /CO. Volume of methane and hydrogen are varied alternatively from 0 to 50% in fuel mixture. Oxidizer is composed by O 2 /N 2 mixture where oxygen volume is increased from 4 to 21%. Finally, injection strain rate is varied from apparition to vanishment of combustion. Atmospheric pressure is considered with constant fuel and oxidizer injection temperatures of 300 K and 1200 K respectively. Chemical kinetics of such complicated system is handled by a composed mechanism from the USC C 1 –C 4 and the Gri 2.11 N-sub mechanism. It is found that under MILD regime, temperature intervals and levels are enhanced by hydrogen compared to methane. Furthermore, temperature levels keep relatively low which guarantees MILD regime. Contrariwise, when oxygen increases in oxidizer, temperature grows up rapidly and the MILD regime disappears. However, if strain rate augments, temperature shows a steep increase then reduces monotonically. It is observed that for low methane volume in the fuel mixture, NNH route dominates NO production. Whereas, when CH 4 increases, the prompt route is enhanced and exceeds NNH one at a methane volume of 12%. When hydrogen increases, prompt and NNH routes are enhanced with a domination of the prompt route until 44% of hydrogen volume. Oxygen increasing in the oxidizer improves thermal mechanism which surpasses prompt one at 17% of oxygen volume and governs NO production. Globally, the third most important route in NO production is the reburning one which is enhanced by all parameters except strain rate. • Chemical kinetics of MILD combustion of mixture biogas-syngas is complicated. • Increase of methane or hydrogen in mixture preserves MILD combustion regime. • Oxygen augmentation in oxidizer increases thermal NO and breaks down MILD regime. • NNH route is enhanced by hydrogen addition whereas prompt one by methane increase. • Injection velocity increase reduces NO emission and maintains MILD regime. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Hydrogen Energy is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ijhydene.2021.01.074 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 37641 Subjects: – SubjectFull: Biogas Type: general – SubjectFull: Methane as fuel Type: general – SubjectFull: Combustion Type: general – SubjectFull: Combustion kinetics Type: general – SubjectFull: Strain rate Type: general – SubjectFull: Chemical kinetics Type: general Titles: – TitleFull: NO emission from non-premixed MILD combustion of biogas-syngas mixtures in opposed jet configuration. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Boussetla, Selsabil – PersonEntity: Name: NameFull: Mameri, Abdelbaki – PersonEntity: Name: NameFull: Hadef, Amar IsPartOfRelationships: – BibEntity: Dates: – D: 29 M: 10 Text: Oct2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 03603199 Numbering: – Type: volume Value: 46 – Type: issue Value: 75 Titles: – TitleFull: International Journal of Hydrogen Energy Type: main |
| ResultId | 1 |
