DEWaste incineration
Flue gas scrubbing in a scrubber system
After the waste incineration process, many pollutants and toxic substances are released into the flue gas. The gas must therefore be cleaned before it is released into the environment. So further cleaning steps, such as electrostatic filters and catalytic converters, are implemented in addition to the flue gas scrubbing. Harmful acidic gases like sulphur dioxide must be dissolved out in the flue gas scrubber. To accomplish this, lime water washing solution is sprayed in the gas in the scrubber column. The lime residues are then filtered out of the washing water and used as a raw material, e.g. for production of gypsum plasterboard. A constant level is required for the continuous cleaning process in the washing column.
Level measurement with VEGADIF 65
Due to the difficult process conditions in the scrubber column, such as the turbulent surface of the medium, negative pressure and aggressive substances, the differential pressure transmitter VEGADIF 65 is used for level measurement here. This instrument is especially suitable since it operates completely unaffected by these process conditions. Additionally, the version with chemical seal system and capillary lines enables front-flush installation and the use of high resistance diaphragm materials.
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