Method and apparatus for processing waste containing...

C - Chemistry – Metallurgy – 12 – P

Patent

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C12P 7/08 (2006.01) B01D 3/00 (2006.01) B09B 3/00 (2006.01) C12M 1/00 (2006.01) C12P 7/10 (2006.01)

Patent

CA 2724832

The invention relates to a method and an apparatus for processing waste (1) containing fermentable raw materials selected from sugars and raw materials such as starch and cellulose capable of being saccharified into fermentable sugars. The method includes a crushing step for forming fine-divided waste (30), a saccharification step for saccharifying with saccharifying enzymes (20) the fine- divided waste (30) to obtain saccharified fine-divided waste (31), a fermentation step for fermenting with an ethanol-producing microorganism (23) said saccharified fine-divided waste (31) to obtain fermented fine-divided waste (32) containing mixture of ethanol and water (25), and a vaporization step for at least partly separating by vaporization said mixture of ethanol and water (25), a dehydrating step for at least partly dehydrating said fermented fine-divided waste (32) to form dry matter (24).

Linvention concerne un procédé et un appareil pour le traitement dun déchet (1) contenant des matières premières fermentescibles choisies parmi les sucres et des matières premières telles que lamidon et la cellulose aptes à être saccharifiées en sucres fermentescibles. Le procédé comprend une étape de broyage pour former un déchet finement divisé (30), une étape de saccharification pour saccharifier avec des enzymes de saccharification (20) le déchet finement divisé (30) pour obtenir un déchet finement divisé saccharifié (31), une étape de fermentation pour faire fermenter avec un microorganisme produisant de léthanol (23) ledit déchet finement divisé saccharifié (31) pour obtenir un déchet finement divisé fermenté (32) contenant un mélange déthanol et deau (25), et une étape de vaporisation pour séparer au moins partiellement par vaporisation ledit mélange déthanol et deau (25), une étape de déshydratation pour déshydrater au moins partiellement ledit déchet finement divisé fermenté (32) pour former de la matière sèche (24).

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