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Grastorp District Heating Plant Case Study
Courtesy of Aerovit A/S
Fuel: Wood chips and Salix. Boiler: 3.5 MW - installed 2002.
Details
Soot-blower:
The boiler was delivered with a soot-blowing system at the top of the boiler
- 9 pes. valves on 1st stroke countercurrent
- 5 pes. valves on 2nd stroke wake
- 7 pes. valves on 3rd stroke countercurrent
Efficiency:
Mechanical cleaning was necessary several times per month - the pipes were not kept clean.
Initiative:
- It was decided to replace the soot-blowing system on the 1st stroke.
- AEROVIT soot-blowers on a new boiler door were delivered February 2003.
Result:
Mechanical cleaning only necessary twice a year.
The pipes in 1sl stroke are now kept clean. The pipes in 2nd stroke are now kept fairly clean. The pipes in 3rd stroke are not kept clean.
Future:
If the remaining soot-blowing system is replaced with AEROVIT valves, it is to be expected that there will be a need for mechanical cleaning only once every 2 or 3 years.
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