| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Lindberg, Daniel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2024Oxidation Behavior of AlxHfNbTiVY0.05 Refractory High-Entropy Alloys at 700–900 °Ccitations
- 2024Influence of PbCl2 and KCl salt mixture on high temperature corrosion of alloy 625citations
- 2023The effect of Cl, Br, and F on high-temperature corrosion of heat-transfer alloyscitations
- 2023Thermodynamic Model for High-Temperature Corrosion Applications: The (NaCl + Na2CO3 + Na2SO4 + Na2S2O7 + Na2CrO4 + Na2Cr2O7 + Na2MoO4 + Na2Mo2O7 + Na2O + KCl + K2CO3 + K2SO4 + K2S2O7 + K2CrO4 + K2Cr2O7 + K2MoO4 + K2Mo2O7 + K2O) System
- 2023Critical Evaluation and Calorimetric Study of the Thermodynamic Properties of Na2CrO4, K2CrO4, Na2MoO4, K2MoO4, Na2WO4, and K2WO4citations
- 2022Impact of recently discovered sodium calcium silicate solutions on the phase diagrams of relevance for glass-ceramics in the Na2O-CaO-SiO2 systemcitations
- 2022Experimental Thermodynamic Characterization of the Chalcopyrite-Based Compounds in the Ag–In–Te System for a Potential Thermoelectric Applicationcitations
- 2022Critical evaluation of CuSO4-H2O system up to solubility limit, from eutectic point to 373.15 Kcitations
- 2021Precious Metal Distributions Between Copper Matte and Slag at High PSO2 in WEEE Reprocessingcitations
- 2021Slag Chemistry and Behavior of Nickel and Tin in Black Copper Smelting with Alumina and Magnesia-Containing Slagscitations
- 2021Superheater deposits and corrosion in temperature gradient – Laboratory studies into effects of flue gas composition, initial deposit structure, and exposure timecitations
- 2020Formation of nitride and oxide inclusions in liquid Fe-Cr-Ti-Al alloyscitations
- 2020Thermodynamic behaviour of nitrogen in the carbon saturated Fe-Mn-Si alloy during castingcitations
- 2018Experimental investigation and thermodynamic re-assessment of the ternary copper-nickel-lead systemcitations
- 2018Thermodynamic Investigation of Selected Metal Sulfates for Controlling Fouling and Slagging During Combustion
- 2018Experimental and modeling approaches to simulate temperature-gradient induced intradeposit chemical processes with implications for biomass boiler corrosion
- 2017The effect of temperature on the formation of oxide scales regarding commercial superheater steelscitations
- 2017Thermal stabilities and properties of equilibrium phases in the Pt-Te-O systemcitations
- 2017Simultaneous melt and vapor induced ash deposit aging mechanisms – Mathematical model and experimental observationscitations
- 2017The influence of flue gas temperature on lead chloride induced high temperature corrosioncitations
- 2017The Thermodynamics of Slag Forming Inorganic Phases in Biomass Combustion Processescitations
- 2016Thermochemical properties of selected ternary phases in the Ag–Bi–S systemcitations
- 2015Alkali chloride transport within superheater deposits due to temperature gradients
- 2012High temperature corrosion of boiler waterwalls induced by chlorides and bromides. Part 2:Lab-scale corrosion tests and thermodynamic equilibrium modeling of ash and gaseous speciescitations
Places of action
| Organizations | Location | People |
|---|
document
Experimental and modeling approaches to simulate temperature-gradient induced intradeposit chemical processes with implications for biomass boiler corrosion
Abstract
<p>The heterogeneous nature of the ash chemistry of biomass fuels gives rise to challenges in predicting the intradeposit chemical processes relevant for deposit melting, sintering and enrichment of corrosive ash species.</p><p>An experimental method has been developed to study the evolution of ash deposit chemistry and morphology in temperature gradients simulating conditions similar to real superheater deposits. The method is based on applying synthetic ash mixtures on an air-cooled corrosion probe, which is inserted into a tube furnace in air or synthetic flue gas. Gas temperatures vary between 700 and 900 °C and probe temperatures vary between 300 and 600 °C. Focus has been on how melting behavior of alkali salt-rich deposits, i.e. KCl-K<sub>2</sub>SO<sub>4</sub>-NaCl-Na<sub>2</sub>SO<sub>4</sub> mixtures, affects the sintering of the deposits, as well as on studying vaporization-condensation of KCl and NaCl within the deposits. The interaction of reactive gas components, such as SO<sub>2</sub> and gaseous KCl, with the deposits was also studied.</p><p>The vaporization-condensation mechanism was shown to lead to enrichment of alkali chlorides towards colder surfaces within the porous parts of the deposit. It leads to condensation and build-up of chlorides on the steel surface, which causes accelerated corrosion, due to the formation of low-melting FeCl<sub>2</sub> mixtures. Liquid-phase sintering and temperature gradient zone melting were shown to be the main mechanisms for the supersolidus sintering of the deposits.</p><p>The vaporization and condensation of alkali chlorides within the deposits was modelled to explain the time-dependent build-up of the chlorides using both CFD and thermodynamic modeling. Temperature gradient induced Fickian concentration diffusion was shown to be the main mechanism and accurately predicted the alkali chloride build up as a function of deposit composition, local temperature and time. A CFD-model for predicting the alkali chloride enrichment in superheater deposits in full-scale boilers has also been developed.</p>