Freeze-concentrating apparatus for aqueous solutions, ice...

B - Operations – Transporting – 01 – D

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B01D 9/04 (2006.01) A23G 9/32 (2006.01) A23L 2/12 (2006.01) A23L 3/40 (2006.01) A23L 3/44 (2006.01) C02F 1/22 (2006.01) F25C 1/00 (2006.01) F25C 1/14 (2006.01) F25C 5/16 (2006.01)

Patent

CA 2294640

A freeze-concentrating apparatus for cooling an aqueous solution with a cooling cylinder (22) serving as a heat exchanger for cooling and continuously producing a suspension containing particles of ice crystals. The liquid component is separated from the suspension and discharged to bring the particles of ice crystals into a high-density state, and the particles of ice crystals are grown to produce a block of ice particles in a pillar shape. The block of ice particles is cut into ice pillars of a prescribed length, and a concentrated solution is withdrawn from the ice pillars.

Cette invention se rapporte à un appareil de cryoconcentration conçu pour refroidir une solution aqueuse au moyen d'un cylindre refroidisseur (22) faisant office d'échangeur thermique permettant de refroidir et de produire en continu une suspension de particules de cristaux de glace. On sépare le composé liquide de la suspension et on l'évacue de façon à faire entrer les particules de cristaux de glace dans un état de haute densité, et on fait se développer les particules de cristaux de glaces de manière à produire un bloc de particules de glace se présentant sous la forme d'une colonne. On découpe alors le bloc formé par les particules de glace en longueurs de colonne préétablies et l'on extrait une concentration concentrée des colonnes de glace.

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