Impact of sour gas composition on ignition delay and burning velocity in air and oxy-fuel combustion
Sour gas is an unconventional fuel consisting mainly of methane (CH₄), carbon dioxide (CO₂), and hydrogen sulfide (H₂S) that constitutes a considerable, currently untapped energy source. However, little is known about its combustion characteristics. In this work, we used our recently assembled and v...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2017
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| Online Access: | http://hdl.handle.net/1721.1/109914 https://orcid.org/0000-0001-8730-272X |
| _version_ | 1826196951718166528 |
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| author | Bongartz, Dominik Ghoniem, Ahmed F |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Bongartz, Dominik Ghoniem, Ahmed F |
| author_sort | Bongartz, Dominik |
| collection | MIT |
| description | Sour gas is an unconventional fuel consisting mainly of methane (CH₄), carbon dioxide (CO₂), and hydrogen sulfide (H₂S) that constitutes a considerable, currently untapped energy source. However, little is known about its combustion characteristics. In this work, we used our recently assembled and validated detailed chemical reaction mechanism to examine some of the combustion properties of sour gas with different compositions in both conventional air combustion and oxy-fuel combustion, the latter being motivated by application in carbon capture and storage. The calculations suggest that raising the H₂S content in the fuel leads to relatively small changes in the flame temperature and laminar burning velocity, but a considerable reduction in the ignition delay time. At elevated pressures, H₂O diluted oxy-fuel combustion leads to higher burning velocities than CO₂ diluted oxy-fuel combustion or air combustion. Mixed CH₄/H₂S flames exhibit a two-zone structure in which H₂S is oxidized completely to sulfur dioxide (SO₂) while CH₄ is converted to carbon monoxide (CO). Formation of corrosive sulfur trioxide (SO₃) mainly occurs during CO burnout.
Keywords
Sour gas
Hydrogen sulfide
Sulfur oxidation
Oxy-fuel combustion
Kinetic mechanisms
Premixed flames |
| first_indexed | 2024-09-23T10:40:10Z |
| format | Article |
| id | mit-1721.1/109914 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:40:10Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1099142022-09-27T14:09:14Z Impact of sour gas composition on ignition delay and burning velocity in air and oxy-fuel combustion Bongartz, Dominik Ghoniem, Ahmed F Massachusetts Institute of Technology. Department of Mechanical Engineering Bongartz, Dominik Ghoniem, Ahmed F Sour gas is an unconventional fuel consisting mainly of methane (CH₄), carbon dioxide (CO₂), and hydrogen sulfide (H₂S) that constitutes a considerable, currently untapped energy source. However, little is known about its combustion characteristics. In this work, we used our recently assembled and validated detailed chemical reaction mechanism to examine some of the combustion properties of sour gas with different compositions in both conventional air combustion and oxy-fuel combustion, the latter being motivated by application in carbon capture and storage. The calculations suggest that raising the H₂S content in the fuel leads to relatively small changes in the flame temperature and laminar burning velocity, but a considerable reduction in the ignition delay time. At elevated pressures, H₂O diluted oxy-fuel combustion leads to higher burning velocities than CO₂ diluted oxy-fuel combustion or air combustion. Mixed CH₄/H₂S flames exhibit a two-zone structure in which H₂S is oxidized completely to sulfur dioxide (SO₂) while CH₄ is converted to carbon monoxide (CO). Formation of corrosive sulfur trioxide (SO₃) mainly occurs during CO burnout. Keywords Sour gas Hydrogen sulfide Sulfur oxidation Oxy-fuel combustion Kinetic mechanisms Premixed flames 2017-06-15T19:35:56Z 2017-06-15T19:35:56Z 2015-05 2015-04 Article http://purl.org/eprint/type/JournalArticle 0010-2180 http://hdl.handle.net/1721.1/109914 Bongartz, Dominik and Ghoniem, Ahmed F. “Impact of Sour Gas Composition on Ignition Delay and Burning Velocity in Air and Oxy-Fuel Combustion.” Combustion and Flame 162, no. 7 (July 2015): 2749–2757 © 2015 The Combustion Institute https://orcid.org/0000-0001-8730-272X en_US http://dx.doi.org/10.1016/j.combustflame.2015.04.014 Combustion and Flame Creative Commons Attribution http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Prof. Ghoniem via Angie Locknar |
| spellingShingle | Bongartz, Dominik Ghoniem, Ahmed F Impact of sour gas composition on ignition delay and burning velocity in air and oxy-fuel combustion |
| title | Impact of sour gas composition on ignition delay and burning velocity in air and oxy-fuel combustion |
| title_full | Impact of sour gas composition on ignition delay and burning velocity in air and oxy-fuel combustion |
| title_fullStr | Impact of sour gas composition on ignition delay and burning velocity in air and oxy-fuel combustion |
| title_full_unstemmed | Impact of sour gas composition on ignition delay and burning velocity in air and oxy-fuel combustion |
| title_short | Impact of sour gas composition on ignition delay and burning velocity in air and oxy-fuel combustion |
| title_sort | impact of sour gas composition on ignition delay and burning velocity in air and oxy fuel combustion |
| url | http://hdl.handle.net/1721.1/109914 https://orcid.org/0000-0001-8730-272X |
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