Chemical feeder

Details Chemical feeder Chemical feeder

B - Operations, Transporting

01

F

B01F 1/00 (2006.01) B01F 5/00 (2006.01) B01F 5/04 (2006.01) C02F 1/68 (2006.01) C02F 1/76 (2006.01)

Patent

CA 2315074

The present invention describes a chemical feeder (2) that supplies treating agents, e.g., calcium hypochlorite, to a liquid stream, e.g., an aqueous stream. The chemical feeder (2) is operated in a substantially flooded condition to provide a useful and safe pressure feeder, and optionally uses cyclonic flow to be relatively self-cleaning. One or more tablet canisters (34) are utilized within the substantially flooded interior (62) of the chemical feeder, and expose the lowermost tablets to the turbulent flow outside of the tablet canister. A substantially uniform chemical distribution rate over tablet life is provided by the chemical feeder.

L'invention se rapporte à un doseur de réactifs (2) qui alimente un courant liquide tel qu'un courant aqueux en agents de traitement, par exemple en hypochlorite de calcium. Le doseur de réactifs (2) fonctionne dans un régime sensiblement immergé pour augmenter le rendement et assurer une pression de sécurité; il utilise en option un courant cyclonique pour effectuer un autonettoyage partiel. A l'intérieur (62) du doseur de réactifs sensiblement immergé on utilise un ou plusieurs récipients à pastilles (34), les pastilles disposées en bas des récipients étant soumises au courant turbulent venant de l'extérieur du récipient. Le doseur de réactifs permet d'assurer un taux de distribution des réactifs sensiblement égal pendant toute la durée de vie des pastilles.

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