Explosionsrisker med flygaska från biobränsleeldade fjärrvärmeverk
(2024) In LUTVDG/TVBB VBRM10 20241Division of Fire Safety Engineering
- Abstract
- The use of biofuel has been used a long time and its consumption keeps increasing. Depending on where the fuel comes from, the chemical composition can be very different. There have been incidents of ashes generating flammable gases, but also the ashes itself have been seen in dust explosion incidents. The risk must be understood and evaluated properly. This paper aims to investigate how explosive fly ash is from biofuel-fired district heating plants, with gradually increasing explosive parameters. And at the same time verify if the changed parameters made it more explosive. It also aims to analyze the ash handling process withing the district heating plant, the HAZOP method was utilized to find faults in the system as part of the risk... (More)
- The use of biofuel has been used a long time and its consumption keeps increasing. Depending on where the fuel comes from, the chemical composition can be very different. There have been incidents of ashes generating flammable gases, but also the ashes itself have been seen in dust explosion incidents. The risk must be understood and evaluated properly. This paper aims to investigate how explosive fly ash is from biofuel-fired district heating plants, with gradually increasing explosive parameters. And at the same time verify if the changed parameters made it more explosive. It also aims to analyze the ash handling process withing the district heating plant, the HAZOP method was utilized to find faults in the system as part of the risk analysis. The result demonstrates that the changes made to the equipment was successful in making the dust tested more explosive in the equipment. The testing on the fly ash never successfully exploded, this indicates that fly ash is not explosive in normal temperatures. The risk analysis showed that the district heating plant Flintrännan had a good coverage of protection against deviations from the norm. However, the analysis indicated that if one type of alarm did not work correctly, things could go wrong which is why this paper recommends having redundancy by having dual alarms. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9167936
- author
- Persson, Marcus LU
- supervisor
-
- Dan Madsen LU
- organization
- alternative title
- Explosions risks with fly ash from biofuel-fired district heating plants
- course
- VBRM10 20241
- year
- 2024
- type
- H2 - Master's Degree (Two Years)
- subject
- keywords
- Aska, Askhantering, Flygaska, Dammexplosioner, HAZOP, Ash, Ash handling, Fly ash, Dust explosions
- publication/series
- LUTVDG/TVBB
- report number
- 5729
- other publication id
- LUTVDG/TVBB--5729--SE
- language
- Swedish
- id
- 9167936
- date added to LUP
- 2024-06-25 15:03:31
- date last changed
- 2024-06-25 15:03:31
@misc{9167936, abstract = {{The use of biofuel has been used a long time and its consumption keeps increasing. Depending on where the fuel comes from, the chemical composition can be very different. There have been incidents of ashes generating flammable gases, but also the ashes itself have been seen in dust explosion incidents. The risk must be understood and evaluated properly. This paper aims to investigate how explosive fly ash is from biofuel-fired district heating plants, with gradually increasing explosive parameters. And at the same time verify if the changed parameters made it more explosive. It also aims to analyze the ash handling process withing the district heating plant, the HAZOP method was utilized to find faults in the system as part of the risk analysis. The result demonstrates that the changes made to the equipment was successful in making the dust tested more explosive in the equipment. The testing on the fly ash never successfully exploded, this indicates that fly ash is not explosive in normal temperatures. The risk analysis showed that the district heating plant Flintrännan had a good coverage of protection against deviations from the norm. However, the analysis indicated that if one type of alarm did not work correctly, things could go wrong which is why this paper recommends having redundancy by having dual alarms.}}, author = {{Persson, Marcus}}, language = {{swe}}, note = {{Student Paper}}, series = {{LUTVDG/TVBB}}, title = {{Explosionsrisker med flygaska från biobränsleeldade fjärrvärmeverk}}, year = {{2024}}, }