Method and device for operating a fermentation plant
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United States of America Patent
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May 19, 2015
Grant Date -
Nov 14, 2013
app pub date -
Mar 21, 2013
filing date -
Nov 17, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A method for operating a fermentation plant with at least one digester that is supplied with a substrate. The substrate is percolated using a percolate from a percolate container and biogas that is generated via the percolation process in the digester or/and in the percolate container is drawn off. The drawn off biogas is treated in a biogas treatment device and the CO2-containing exhaust gas that is generated during the treatment is introduced into the digester using a purge line, for forcing out and drawing off the biogas that was generated in the digester. Alternatively CO2-containing biogas that was generated in an additional digester in a different fermentation process can be introduced into the digester for forcing out and drawing off the biogas that was generated in the digester. The CO2-containing purge gas is forced to pass through the substrate dislodging any trapped biogas.
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