Process for solid-liquid extraction and extraction tower for carrying out the process
AssigneeBraunschweigische Maschinenbauanstalt
InventorsHeinrich Hartmann, Dieter Hellmig, Siegfried Matusch, Guenter Pohner, Guenther Ross, Florian Sosnitza
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Abstract
In a process for solid-liquid extraction, in particular of sucrose from beet cossettes, countercurrent extraction in an extraction tower is employed. The tower juice is drawn off together with the small-sized solid constituents obtained in the process, such as sand, essentially exclusively via side screens.
Claims35
An extraction tower for solid-liquid countercurrent extraction of an extract from a solid raw material, said extraction tower comprising a tower wall and a tower floor bounding an internal space, an introduction port for an extractant liquid and an introduction port for a raw material respectively opening into said internal space at different locations for a countercurrent flow of said raw material relative to said extractant liquid, and a side screen through which a tower juice containing said extract can flow out of said internal space and which is arranged near said tower wall within said internal space, wherein said tower floor comprises a floor pan that is substantially non-perforated, rigid and load-carrying.
Dependencies are inferred from the claim text.