| People | Locations | Statistics |
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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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Frandsen, Flemming Jappe
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (24/24 displayed)
- 2023Full-scale investigations of initial deposits formation in a cement plant co-fired with coal and SRFcitations
- 2018Ash formation and deposition in coal and biomass fired combustion systems: Progress and challenges in the field of ash particle sticking and rebound behaviorcitations
- 2018Time and temperature effects on alkali chloride induced high temperature corrosion of superheaters during biomass firingcitations
- 2018Influence of Preoxidation on High-Temperature Corrosion of a FeCrAl Alloy Under Conditions Relevant to Biomass Firingcitations
- 2017Deposit Shedding in Biomass-Fired Boilers: Shear Adhesion Strength Measurementscitations
- 2017Influence of preoxidation on high temperature corrosion of a Ni-based alloy under conditions relevant to biomass firingcitations
- 2017Complementary Methods for the Characterization of Corrosion Products on a Plant-Exposed Superheater Tubecitations
- 2017Effect of flue gas composition on deposit induced high temperature corrosion under laboratory conditions mimicking biomass firing. Part I: Exposures in oxidizing and chlorinating atmospherescitations
- 2017Effect of flue gas composition on deposit induced high temperature corrosion under laboratory conditions mimicking biomass firing. Part II: Exposures in SO2 containing atmospherescitations
- 2016Adhesion Strength of Biomass Ash Deposits
- 2016Deposit Shedding in Biomass-fired Boilers: Shear Adhesion Strength Measurements
- 2015Effect of Water Vapor on High-Temperature Corrosion under Conditions Mimicking Biomass Firingcitations
- 2015High temperature corrosion during biomass firing: improved understanding by depth resolved characterisation of corrosion productscitations
- 2015Alkali chloride induced corrosion of superheaters under biomass firing conditions: Improved insights from laboratory scale studies
- 2014High Temperature Corrosion under Laboratory Conditions Simulating Biomass-Firing: A Comprehensive Characterization of Corrosion Productscitations
- 2014High temperature corrosion under conditions simulating biomass firing: depth-resolved phase identification
- 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
- 2012Combustion Aerosols from Full-Scale Suspension-Firing of Wood Pellets
- 2010Characterization and Quantification of Deposits Buildup and Removal in Biomass Suspension-Fired Boilers
- 2010Ash Deposit Formation and Removal in a Straw and Wood Suspension-Fired Boiler
- 2001Corrosion Investigations in Straw-Fired Power Plants in Denmark
- 2001The effect of Co-firing with Straw and Coal on High Temperature Corrosion
- 2000Deposit Formation in a 150 MWe Utility PF-Boiler during Co-combustion of Coal and Strawcitations
Places of action
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document
The effect of Co-firing with Straw and Coal on High Temperature Corrosion
Abstract
As a part of ELSAMS development programme into alternative energy sources, various concepts of straw-firing have been investigated. This paper concerns co-firing of straw with coal to reduce the corrosion rate observed in straw-fired power plants. Co-firing with coal reduces the amount of potassium chloride deposited onto superheater sections which causes accelerated corrosion by chlorination.A field investigation at Midtkraft Studstrupværket in Denmark has been undertaken where coal with 10% straw and 20% straw (% energy basis) has been used as fuel for up to 3000 hours. The study was undertaken by: a) the exposure of metal rings on water/air cooled probes, and b) the exposure of a range of materials built into the existing superheaters. A range of austenitic and ferritic steels was exposed in the steam temperature region of 520-580°C. The flue gas temperature ranged from 925-1100°C.The corrosion products for the various steel types were investigated using light optical and scanning electron microscopy. Corrosion mechanisms for the austenitic and ferritic steels are presented. These are discussed in relation to temperature and deposit composition. Co-firing with coal has removed potassium chloride from the deposit thus chlorination is not a corrosion form that is seen. An increase in straw share from 10 % to 20 % (% energy basis) gave a higher amount of potassium sulphate in the ash and consequently greater amount of sulphidation. At high metal and flue gas temperatures, low temperature hot corrosion was also observed.