Device and method for the high-pressure treatment of bulk material by extraction and/or impregnation and use

A pressure vessel device configured for the high-pressure treatment, at a high pressure level in a range from 40 to 1000 bar, of bulk material by extraction and/or impregnation, comprising:

• a cover;
• a high-pressure-resistant wall that encloses an interior volume;
• an inlet fitting coupled to the interior volume;
• and
• an outlet fitting, the inlet fitting and the outlet fitting respectively configured to permit passage of the bulk material;
• a supporting tray module arranged in a suspended manner in the interior volume, the module having a multiplicity of actuatable treatment levels mounted and positioned in displaceably actuatable fashion, said treatment levels arranged one above the other, and which are configured in a substantially horizontally oriented plane in the interior volume and are configured to be loaded with bulk material in partial batches when the pressure vessel device is closed, and, after the high-pressure treatment has occurred at the high pressure level, unloadable in partial batches with the pressure vessel device closed, such that the high-pressure treatment is performed in a closed system which is sealed off with respect to an ambient surrounding outside the closed system, wherein the supporting tray module has at least one centering ring and multiple holding units for mechanical stability and support and a support unit for radial support in a lower region of the supporting tray,
• wherein at least one of the treatment levels is defined by at least one gas-permeable plate and/or wherein each respective of the treatment levels is defined by at least one pivotably actuatable gas-permeable plate.