| 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 |
|
Enestam, Sonja
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (2/2 displayed)
Places of action
| Organizations | Location | People |
|---|
article
The influence of flue gas temperature on lead chloride induced high temperature corrosion
Abstract
Firing of waste-based fuels increases the risk for heavy metal-induced corrosion in the furnace walls and in other low-temp. heat transfer surfaces, such as primary superheaters. Lead-contg. compds., esp. alkali lead chlorides, were detected in the boiler water walls, causing severe corrosion. Corrosion rate of chlorine-induced corrosion is known to be dependent on the material temp. and the objective of this work was to study the influence of the flue gas temp. on lead chloride-induced corrosion. The expts. were carried out with full-scale corrosion probe and deposit probe measurements in a recycled wood firing CFB boiler. The material used in the corrosion probe measurements was low alloy steel EN10216-2 16Mo3 and the material temp. was adjusted to 360°. Two corrosion and deposit probes were used in different locations to expose the probes towards hot, 800°, and cooler, 490°, flue gas temps. Changes of the wall thicknesses were measured and the samples were analyzed with SEM/EDS and x-ray diffraction for more detailed deposit characterization. Corrosion was detected in both the hot and the cooler flue gas samples. A low melting (T<sub>0</sub> = 368°) alkali-lead-chloride mixt. was identified. Findings from these measurements strongly indicate this mixt. to be the corrosion-causing compd. at both flue gas temps. However, the corrosion rate was higher in the hot flue gas sample compared to the cooler flue gas sample. A much steeper deposit temp. gradient was calcd. for the hot flue gas sample, suggesting that the alkali-lead-chloride mixt. is in the molten form. These findings, together with the higher proportion of the present alkali-lead-chloride mixt., are the potential factors for the higher corrosion rate in the hot flue gas sample compared to the cooler flue gas sample.