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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lyng Lejre, Kasper Hartvig
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (4/4 displayed)
- 2020Experimental Investigation and Mathematical Modeling of the Reaction between SO2(g) and CaCO3(s)-containing Micelles in Lube Oil for Large Two-Stroke Marine Diesel Enginescitations
- 2019Mixed Flow Reactor Experiments and Modeling of Sulfuric Acid Neutralization in Lube Oil for Large Two-Stroke Diesel Enginescitations
- 2019Mechanisms of sulfur dioxide and sulfuric acid neutralization in lube oil for marine diesel engines
- 2017Reaction of Sulfuric Acid in Lube Oil: Implications for Large Two-Stroke Diesel Enginescitations
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article
Experimental Investigation and Mathematical Modeling of the Reaction between SO2(g) and CaCO3(s)-containing Micelles in Lube Oil for Large Two-Stroke Marine Diesel Engines
Abstract
Sulfur dioxide, formed in combustion of sulfur-rich fuels in diesel engines, may oxidize and react with water to form corrosive H<sub>2</sub>SO<sub>4</sub>. However, the SO<sub>2</sub> may also be absorbed in the lube oil and consume CaCO<sub>3</sub>-containing reverse micelles. In this study, the CaCO<sub>3 </sub>+ SO<sub>2</sub> reaction was investigated in a batch reactor setup at temperatures and pressures similar to those on the cylinder liner in an engine. The conversion of CaCO<sub>3</sub> and the formation of products were determined by Fourier Transform Infrared Spectroscopy (FTIR). CaSO3 was the main product, but CaSO<sub>4</sub> was observed at extended residence times and increased temperature. The SO<sub>2</sub>-CaCO<sub>3</sub> reaction exhibited only a small temperature dependence; the increase in the rate constant with temperature was partly off-set because the absorption of SO<sub>2</sub> in the lube oil emulsion decreases at increased temperature. The reaction rate increased slightly with the initial water concentration due to increased SO<sub>2</sub> absorbance. A mathematical model for the batch reactor was set up and kinetic parameters were determined by fitting predictions to the experimental data. The model was then used to predict the CaCO<sub>3</sub> conversion in lube oil from SO<sub>2 </sub>for conditions relevant to a full-scale engine application. Simulations showed that consumption of CaCO<sub>3</sub> from SO<sub>2</sub> is insignificant in a two-stroke marine diesel engine application and that the H<sub>2</sub>SO<sub>4</sub>-CaCO<sub>3</sub> reaction is far more important than the SO<sub>2</sub>-CaCO<sub>3</sub> reaction.