Method and device for low-emission storage of...

C - Chemistry – Metallurgy – 02 – F

Patent

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C02F 3/00 (2006.01)

Patent

CA 2584148

The invention relates to a method and a device for low-emission storage of biologically-degradable materials by means of ventilation without establishment of aerobic conditions in the material. The storage permits a more constant charging of the subsequent method steps. Methane formation is suppressed by means of the ventilation and the potential risk of formation of an explosive gas mixture in the storage container (2), or in the plant components transporting emissions, reduced. The control of the ventilation matches the ventilation rate to the biological activity in the stored material and minimises the air input to minimise the loss of methane build-up by aerobic material conversion and also the energy requirement for ventilation. The method is characterized in that by control of the ventilation of the storage container (2) a significant methane gas build-up is prevented.

L'invention concerne un procédé et un dispositif pour un stockage à émission faible de matériaux biodégradables au moyen d'une ventilation sans établissement de conditions aérobiques dans le matériau. Le stockage permet une charge plus constante des étapes du procédé ultérieur. La formation de méthane est supprimée au moyen de la ventilation et le risque potentiel de la formation d'un mélange gazeux explosif dans le récipient de stockage (2), ou dans les composants de l'installation transportant des émissions est réduit. La commande de la ventilation correspond au taux de ventilation de l'activité biologique dans le matériau stocké et minimise l'entrée d'air, de manière à minimiser la perte de méthane construit par la conversion d'un matériau aérobique et également l'énergie requise pour la ventilation. Ledit procédé est caractérisé en ce que la formation d'un gaz de méthane significatif est évitée, lors de la régulation de la ventilation du récipient de stockage (2).

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