A brewing process

C - Chemistry – Metallurgy – 12 – C

Patent

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Details

C12C 11/00 (2006.01) C12C 7/047 (2006.01) C12C 7/20 (2006.01) C12C 12/00 (2006.01) C12G 3/08 (2006.01) C12H 1/02 (2006.01) C12H 1/07 (2006.01)

Patent

CA 2255752

Malt and roasted barley are mixed with hot water in a mash tun. The brew is transferred to a lauter tun to separate the sweet wort which is boiled and hops are added. The sweet wort is cooled and then fermented with yeast to form stout. A plate filter (1) is used to substantially clarify the stout. The flow of beer from a storage vessel (2) is monitored by a flowmeter (3) and the oxygen content is monitored by an analyser (4). Beer is delivered from a balance tank (5) to the filter (1) and bright diluted beer from the filter (1) is collected in a buffer vessel (7). A control valve (10) with a feedback control loop is used to control the flow of bright stout from the vessel (7).

On mélange du malt et de l'orge torréfiée avec de l'eau chaude dans une cuve à trempe. On transfère le brassin dans une cuve de clarification afin de séparer le moût doux que l'on fait bouillir avant d'ajouter les houblons. On laisse refroidir le moût doux et on le fait fermenter avec de la levure pour former le stout. On utilise un filtre à plaques (1) pour sensiblement clarifier le stout. Un débitmètre (3) contrôle le débit de bière provenant d'une cuve de stockage (2) tandis qu'un analyseur (4) contrôle la teneur en oxygène. La bière circule depuis un réservoir d'équilibrage (5) jusqu'au filtre (1) et la bière claire diluée sortant du filtre (1) est collectée dans un récipient tampon (7). Une vanne de commande (10) munie d'une boucle de commande à réaction est utilisée pour réguler le débit de stout clair sortant du récipient (7).

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