Industrial Filtration Solutions

The SITOM of an important city in the Rhône-Alpes region contacted SCCM ALP for the following problem: its incinerator treats its semi-wet fumes with lime milk. However, the latter is subject to pollution peaks in HCl (hydrochloric acid) and SO2 (sulphur dioxide) on the 2 incineration lines, which forces it to call in a specialist.


Suggested solutions from SCCM ALP:

After analysis of the existing process:

  • Installation of a slaked lime silo equipped with 2 dosing screws and 2 pneumatic transport lines (1 common silo, 1 screw and 1 pneumatic transport per line)
  • Optimisation of the operation of existing installations (milk of lime treatment)
  • Injection of hydrated lime into the flue gas ducts at the reactor inlet
  • Automatic reagent injection to prevent pollution thresholds from being exceeded
Noted improvements: 
  • Reduction of daily emissions during peaks:
  Lowering of the threshold to 7mg/Nm3 HCl (legal obligation: 10mg/Nm3)
Lowering of the threshold to 35mg/Nm3 SO2 (legal obligation: 50mg/Nm3)