The invention described in this document refers to a process and an equipment to extract 2, 4, 6-trichloroanisole, usually called TCA, from natural cork stoppers or other pieces made of cork through the use of an organic liquid solvent that dissolves the TCA and removes it from the cork. In this process the cork stoppers are immersed in a tank with the solvent at atmospheric pressure. The solvent circulates through a filter with absorbent material, which retains the TCA, returning to the tank in a closed circuit. The degree of extraction increases with time, with the use of ultrasound and with the temperature of the solvent. The solvent may be concentrated or diluted in water. This process can be applied to large quantities of natural corks, for example 10.000 or more.
|IPC||B27K 7/ 00 A I, B01D11/02|
|Publication status||Published - 13 Apr 2022|