Issue:
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)
Lowering of the threshold to 35mg/Nm3 SO2 (legal obligation: 50mg/Nm3)
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03.03.2023
After more than 2 years of commitment and mobilization of the entire SCCM ALP team, our company has been ISO 9001 and ISO 45001 certified since February 2, 2023. This recognition gives wings and positions our Savoyard SME internationally.
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