Comparison of Flame Stability Under Air and Oxy Fuel Conditions for an Aerodynamically Stabilized Pulverized Coal Swirl FlameSource: Journal of Energy Resources Technology:;2016:;volume( 138 ):;issue: 004::page 42209Author:Habermehl, Martin
,
Hees, Johannes
,
Maأںmeyer, Anna
,
Zabrodiec, Diego
,
Hatzfeld, Oliver
,
Kneer, Reinhold
DOI: 10.1115/1.4032940Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The flame characteristics of a pilotscale swirl burner for air and oxyfuel combustion of pulverized coal are investigated. The local burner air (or oxygen) ratio خ» and the oxygen concentration have been systematically varied. The investigated flames were characterized recording UV emissions originating from OH* chemiluminescence indicating the reaction zone in the gas phase, measuring the axial and tangential velocities using an laser Doppler velocimetry (LDV) system and analyzing the composition of the flue gas. A change of the flame structure was revealed from the conducted measurement: the “regular†flame for the investigated burner is characterized by a coneshaped swirling combustion zone with a distinct inner recirculation zone. Reducing the oxidizer flows through the burner leads to a breakdown of the inner recirculation zone and a significant change of the flame pattern. This change was identified by the LDV measurements as well as from the chemiluminescence images, and it was found to be closely related to the momentum flow through the burner into the main combustion zone.
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| contributor author | Habermehl, Martin | |
| contributor author | Hees, Johannes | |
| contributor author | Maأںmeyer, Anna | |
| contributor author | Zabrodiec, Diego | |
| contributor author | Hatzfeld, Oliver | |
| contributor author | Kneer, Reinhold | |
| date accessioned | 2017-05-09T01:27:52Z | |
| date available | 2017-05-09T01:27:52Z | |
| date issued | 2016 | |
| identifier issn | 0195-0738 | |
| identifier other | jert_138_04_042209.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/160924 | |
| description abstract | The flame characteristics of a pilotscale swirl burner for air and oxyfuel combustion of pulverized coal are investigated. The local burner air (or oxygen) ratio خ» and the oxygen concentration have been systematically varied. The investigated flames were characterized recording UV emissions originating from OH* chemiluminescence indicating the reaction zone in the gas phase, measuring the axial and tangential velocities using an laser Doppler velocimetry (LDV) system and analyzing the composition of the flue gas. A change of the flame structure was revealed from the conducted measurement: the “regular†flame for the investigated burner is characterized by a coneshaped swirling combustion zone with a distinct inner recirculation zone. Reducing the oxidizer flows through the burner leads to a breakdown of the inner recirculation zone and a significant change of the flame pattern. This change was identified by the LDV measurements as well as from the chemiluminescence images, and it was found to be closely related to the momentum flow through the burner into the main combustion zone. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Comparison of Flame Stability Under Air and Oxy Fuel Conditions for an Aerodynamically Stabilized Pulverized Coal Swirl Flame | |
| type | Journal Paper | |
| journal volume | 138 | |
| journal issue | 4 | |
| journal title | Journal of Energy Resources Technology | |
| identifier doi | 10.1115/1.4032940 | |
| journal fristpage | 42209 | |
| journal lastpage | 42209 | |
| identifier eissn | 1528-8994 | |
| tree | Journal of Energy Resources Technology:;2016:;volume( 138 ):;issue: 004 | |
| contenttype | Fulltext |