| Project Owner... |
Pfeifer & Langen
|
| Project name |
Pfeifer & Langen
|
| Status |
operational
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| Country |
Germany
|
| City |
Könnern
|
| Type |
TRL 9 Commercial
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| Technology |
Grate
|
| Technology additional information |
Full conversion from coal to biomass
|
| Raw Material |
forest residues
|
| Input 1 |
Wood chips (68 MW)
|
| Output 1 |
heat (68 MW)
|
| Partners |
AET
|
| Technology Brief |
As part of their ambition to phase out coal, major European sugar producer Pfeifer & Langen decided in 2020 to decarbonize their sugar factory in Könnern in Saxony-Anhalt, Germany.
After an initial meeting with AET, Pfeifer & Langen decided to conduct a combustion test and a load test to determine how best to convert from coal to biomass waste.
The tests were successfully carried out with bio-pellets and, thanks to the AET SNCR DeNOx test kit, it was confirmed that the NO X emissions did not exceed Germany's strict regulations.
This approach enabled Pfeifer & Langen to make a business-oriented decision to convert their existing boilers to biomass through a process that would have minimal design and operational risks and result in a more competitive solution.
AET was engaged to carry out the fuel conversion on the two existing walking grate boilers, a significant element of Pfeifer & Langen's overall decarbonisation journey.
Taking into account the production schedule of the Könnern factory, where juice is produced from January to May and sugar from September to January, an initial plan was drawn up to convert one boiler to natural gas and the other boiler to biomass.
But when the invasion of Ukraine in 2022 made it more difficult and significantly more expensive to obtain natural gas, the management of Pfeifer & Langen decided that both boilers would run on biomass in the 2023 campaign.
SOLUTION
The revised plan for converting the boilers to biomass consisted of:
Fuel dosing: The existing coal dosing system was reused. However, a three-level automatic safety system was installed from the emergency shut-off valve to the boiler room entrance to protect against potential backfire through the pellets.
Pressure section: establish biogas burners; 2 x 4 MWth
Air and flue gas system: Changes have been made to the primary and secondary air system, including flue gas recirculation and combustion of waste gas from the sugar factory.
Standard AET SNCR DeNOx system: Urea-based SNCR with a level of injection lances to ensure NOx emissions below 100 mg/Nm³ @ 6%O 2
Mathias Herbrig, Production Manager at Könnern: “ We took a huge risk when choosing a partner for the fuel conversion. By choosing AET, we saw a partner who demonstrated a step-by-step approach with a successful combustion test, a detailed plan and a budget that would not jeopardize our production safety throughout our campaign.”
Additional Information
For more information about this biomass-fired CHP plant and/or customer: Click here
For more information about this biomass-fired plant and about AET: Contact AET sales.
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https://www.aet-biomass.dk/da-dk/hjem/referencer/biomassefyrede-anl%C3%A6g/pfeifer-langen-%E2%80%93-k%C3%B6nnern.aspx
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Last Update: 2025-03-18 09:45:59