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

A method for the high-pressure treatment of bulk material by extraction and/or impregnation, comprising:

• arranging the bulk material in an interior volume of a pressure vessel device;
• sealing the pressure vessel;
• applying a high pressure level in the range from 40 to 1000 bar to the bulk material;
• performing, batchwise, the high-pressure treatment in a closed system in the pressure vessel device by feeding the bulk material batchwise to the interior volume with the pressure vessel device closed and being arranged on at least one treatment level;
• and
• discharging, batchwise, the treated bulk material, after the high-pressure treatment has occurred, from the interior volume with the pressure vessel device closed;
• wherein the high-pressure treatment is performed using a supporting tray module which is arranged in the interior volume of the pressure vessel device and which has a multiplicity of treatment levels arranged one above the other in the interior volume, wherein the treatment levels are, for the high-pressure treatment and/or for the passage of the bulk material, mounted and positioned in displaceably actuatable fashion in the interior volume.

A pressure vessel device configured for the high-pressure treatment, at a high pressure level in the 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 the 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 the surroundings, and wherein the supporting tray module has at least one geometrically coupling intermediate element and multiple holding units for mechanical stability and support and a support unit for radial support in the lower region thereof.