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Patent Searching and Data


Title:
METHOD AND APPARATUS FOR INDUSTRIAL PRODUCTION OF AN EXTRACT BY SOLID-LIQUID EXTRACTION
Document Type and Number:
WIPO Patent Application WO/2020/211972
Kind Code:
A3
Abstract:
A method and apparatus for industrial production of an extract by solid-liquid extraction, preferably by solid-liquid hot extraction, especially for industrial scale applications and especially for production of a tea concentrate, using an extraction vessel (10; 100) according to the preamble of claim 1. It is an object of the present invention, by means of the method according to the invention and the apparatus, firstly to improve mass transfer in the course of extraction compared to solutions according to the prior art, and secondly to enable a further improvement in demoisturization of a raffinate having residual moisture in order to obtain further valuable extract. This is achieved by the method by the following method steps inter alia: (ii) intensifying the solid-liquid extraction during a first dwell time (τ1) by • at least partly purging the vessel (12; 12.1) in the form of at least one flow (S1, S2, S3) deployed in a planned and targeted manner with the secondary solvent (C) or the respective extract achieved ((C∞B)) and/or • fluidizing and suspending the primary mixture ((A∞B)) within the vessel (12; 12.1) by supplying the secondary solvent (C) or the respective extract achieved ((C∞B)) via a floor space of the vessel (12; 12.1) by means of an upward-directed fourth flow (S4) and/or • moving the vessel (12; 12.1) relative to the extraction vessel (10; 100) within the extract respectively achieved ((C∞B)); (iii) circulating the secondary solvent (C) or the extract ((C∞B)) from the top downward in the extraction vessel (10; 100) via a circulation flow incorporating the extraction vessel (10; 100), based on the extraction vessel (10; 100), and (iv) feeding the extract obtained by demoisturizing raffinate and freed of raffinate having residual moisture ((C∞B)**) into the extract ((C∞B)**) freed of raffinate having residual moisture that has already been separated or is to be separated.

Inventors:
O'GORMAN COLM (GB)
ROLLE ULRICH (DE)
LEAL CARCIA MARIA CARMEN (DE)
TACKE LUDGER (DE)
HELMS FRANZ-JOSEF (DE)
Application Number:
PCT/EP2020/000051
Publication Date:
November 26, 2020
Filing Date:
February 26, 2020
Export Citation:
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Assignee:
GEA TDS GMBH (DE)
International Classes:
B01D11/02; A23F3/18; A23F3/42; B30B9/26
Foreign References:
CN207532831U2018-06-26
NO308939B12000-11-20
CN108654137A2018-10-16
CN106563288A2017-04-19
EP2837290A12015-02-18
DE102013022271A12014-09-18
CN208115208U2018-11-20
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