Device and method for extracting aroma substances from vegetable aroma carriers into a brewing liquid

A device for extracting aroma substances from vegetable aroma carriers into a brewing liquid, said device comprising:

• a fermentation tank having a fermentation tank inlet and a fermentation tank outlet;
• a processing device having a brewing liquid inlet in fluid communication with the fermentation tank inlet, a brewing liquid outlet in fluid communication with the fermentation tank outlet, and a filling opening;
• the processing device adapted to receive hop pellets though the filling opening and the brewing liquid from the fermentation tank through the tank inlet and to form a fluidized bed extractor accommodating a suspension bed formed by a suspension including the brewing liquid and solid particles contained in the vegetable aroma carriers;
• and
• a feed pump adapted to pump the brewing liquid from the fermentation tank outlet through the brewing liquid inlet of the processing device, through the suspension bed of the fluidized bed extractor, and out of the brewing liquid outlet to the fermentation tank inlet, wherein the feeding speed of the feed pump is set to a value at which a flow speed of the brewing liquid in the fluidized bed extractor is lower than an average sedimentation speed of the solid particles in the fluidized bed extractor, wherein the brewing liquid is pumped out of the processing device, the processing device both dissolving fluids and separating fluids from the solid particles through the suspension bed.