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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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Wu, Hao
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2023Investigating the Interaction between Ilmenite and Zinc for Chemical Loopingcitations
- 2023Full-scale investigations of initial deposits formation in a cement plant co-fired with coal and SRFcitations
- 2022Powder Reuse in Laser-Based Powder Bed Fusion of Ti6Al4V—Changes in Mechanical Properties during a Powder Top-Up Regimecitations
- 2022On the application of Vickers micro hardness testing to isotactic polypropylenecitations
- 2022Thermal Conversion of Sodium Phytate Using the Oxygen Carrier Ilmenite Interaction with Na-Phosphate and Its Effect on Reactivitycitations
- 2021Analysis of spatter removal by sieving during a powder-bed fusion manufacturing campaign in grade 23 titanium alloycitations
- 2021Electrospinning for developing flame retardant polymer materials: current status and future perspectivescitations
- 2021Thread-stripping test procedures leading to factors of safety data for friction-drilled holes in thin-section aluminium alloycitations
- 2020Reuse of grade 23 Ti6Al4V powder during the laser-based powder bed fusion processcitations
- 2017Deposit Shedding in Biomass-Fired Boilers: Shear Adhesion Strength Measurementscitations
- 2017Deposit Shedding in Biomass-Fired Boilers: Shear Adhesion Strength Measurementscitations
- 2016Adhesion Strength of Biomass Ash Deposits
- 2016Adhesion Strength of Biomass Ash Deposits
- 2016Deposit Shedding in Biomass-fired Boilers: Shear Adhesion Strength Measurements
- 2016Deposit Shedding in Biomass-fired Boilers: Shear Adhesion Strength Measurements
- 2013Deposit formation in a full-scale pulverized wood-fired power plant with and without coal fly ash addition
- 2013Modeling of sulfation of potassium chloride by ferric sulfate addition during grate-firing of biomass
- 2012Deposit Probe Measurements in Danish Grate and Pulverized Fuel Biomass Power Boilers
- 2012Deposit Probe Measurements in Danish Grate and Pulverized Fuel Biomass Power Boilers
- 2012Combustion Aerosols from Full-Scale Suspension-Firing of Wood Pellets
- 2010On the prediction of the residual fatigue life of cracked structures repaired by the stop-hole methodcitations
Places of action
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article
Full-scale investigations of initial deposits formation in a cement plant co-fired with coal and SRF
Abstract
This work investigates the initial (short-term) deposit formation in a cement calciner co-fired with coal and SRF (Solid Recovered Fuel). The main objective was to evaluate and compare the tendencies of deposit formation (i.e. material deposition rate and composition) at different locations (heights) in the calciner system, during different operation conditions. A steel probe was used to collect initial deposits from four different sampling locations: i) in the kiln riser (two sampling locations), ii) in the mid calciner, and, iii) at the outlet from the bottom stage preheater cyclone (C5). After an exposure time of the probe between 1 and 20 min, the collected deposit samples were weighted and characterized by SEM-EDX, ICP-OES/IC, and XRD. Plant operation data, measured gas temperatures, as well as gas phase composition data (i.e. KCl(g) and SO 2 (g)), supported the evaluation of deposit formation. Due to high particle flux (up to approx. 61,000 kg/(m 2 ·h) in the riser duct), the average net deposit formation rate was around 500 kg/(m 2 ·h) for 1 min exposure time, decreasing to <100 kg/(m 2· h) for exposure times ≥4 min (due to spontaneous shedding and erosion). The deposits contained primarily five crystalline phases (CaO, CaCO 3 , Ca(OH) 2 , KCl, and SiO 2 ), which is in general consistence with the composition of the admitted preheated raw meal (C4 meal) at measurement locations, with a slight enrichment in KCl, suggesting some condensation of volatile elements from the high-temperature gas phase on the surface of the somewhat colder deposit particles. Further, the deposit samples obtained in the kiln riser had a higher degree of calcination (higher proportion of CaO as compared to CaCO 3 ) as compared to the admitted C4 meal, suggesting carry-over of dust from the kiln feed pipe, or fast calcination of the riser meal due to high temperature. The collected short-term deposits differ significantly from long-term (mature) deposits, which have previously been collected from the site, in terms of chemical ...