Abstract

The invention relates to a process and a plant for treating subproducts derived from the extraction of virgin olive oil, comprising a process (2) for the separation of solid - liquid phases of the alperujo obtained from the method for producing virgin olive oil; a process (3) for granular deagglomeration and structuring; a step (4) of surface treatment with a surface coating of orujo fines for creating the non-adherence of particles, such that the product to be treated reaches a suitable particle size distribution; a process (5) for indirect drying in a gravimetric column, with a transverse air flow for proceeding to the evaporation of the water; and a process (6) for the sifting of fines, in order to recover the previously added additives.

IPC Classes  ?

• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
• F26B 17/12 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity
• F26B 3/14 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the materials or objects to be dried being moved by gravity
• C11B 13/00 - Recovery of fats, fatty oils or fatty acids from waste materials