Efficient, low-emission and reliable – Retrofit at the waste-to-energy plant Burgkirchen

Temperature (°C) 220

Design pressure (bar g) 0,1

Heat duty (MW) 2,0

Sulfuric acid (mg/Nm³) > 300
Acid dew point (°C) 160

Hydrochloric acid (mg/Nm³) > 2000

Hydrofluoric acid (mg/Nm³) > 40

Challenge:

In the flue gas cleaning section of our customer, the waste-to-energy plant in Burgkirchen, defective glass tubes in the gas/gas heat exchanger repeatedly caused problems. Cracks and breakages allowed unfiltered raw gas to bypass the scrubber, resulting in exceedances of the permissible daily average HCl limits.

Our solution:

We completely replaced the glass tubes with corrosion-resistant PPS-GR tubes and installed FKM seals. This material combination permnently withstands high thermal and chemical stresses and ensures leak-free and trouble-free operation.

click here to see the power plant diagram

Outcome:

emission reduction

daily average HCl value < 1,0 mg/Nm³

Plant safety

No tube breakages since commissioning

Effiency:

Heat output and pressure drop within the planned target range

Cost-effectiveness:

Reduced operating and maintenance costs due to the elimination of unplanned shutdowns

Next steps:

Thanks to the close cooperation and coordination between the plant experts and the Technoform team, the replacement was successfully completed within the scheduled revision period. Following these positive results, the conversion of a second incineration line to PPS-GR is already being planned.