Haringa, Douwe (2022) Effects of ammonia addition on soot formation in co-flow diffusion flames using laser-induced incandescence. Master's Research Project 2, Energy and Environmental Sciences.
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Abstract
Energy production needs to be decarbonized in order to tackle climate change. Contributing to this can be the introduction of clean fuels, which do not emit carbon dioxide when combusted. A potential clean fuel can be hydrogen gas, however storage and logistics remain a hurdle for implementation. Ammonia is a hydrogen carrier with an existing infrastructure due to the incumbent Haber-Bosch process, and can be used as a clean, carbon-free combustion fuel. However, its combustion is challenging, as the properties of ammonia are less favourable for combustion compared to fossil fuels. As an intermediate step, ammonia can be added to regular carbonaceous fuels to reduce emissions and to gain more insight and experience with ammonia combustion. This research focussed on the effect of ammonia addition on soot formation in flames from carbonaceous fuels. Soot formation along the flame centreline was measured using the laser-induced incandescence technique. To quantify the soot volume fraction in the flames of interest, a calibration was performed by laser light extinction through a laminar premixed flat flame using a McKenna burner. Subsequently, axial profiles of methane and ethylene co-flow laminar diffusion flames doped with ammonia and nitrogen were measured. Doping with nitrogen and ammonia was chosen to distinguish the physical and chemical effects, as nitrogen is inert. Soot suppressing effects were found in the doped methane flames, but not the doped ethylene flames.
| Item Type: | Thesis (Master's Research Project 2) |
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| Supervisor name: | Mokhov, A.V. and Dusek, U. |
| Degree programme: | Energy and Environmental Sciences |
| Thesis type: | Master's Research Project 2 |
| Language: | English |
| Date Deposited: | 15 Aug 2022 09:41 |
| Last Modified: | 15 Aug 2022 09:41 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/28369 |
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