Industrial washing process for items resulting from industrial production in general, using solvents and comprising the following steps: - washing of said items in at least one vacuum-tight washing chamber using at least one solvent; - regeneration of said solvent coming from said washing chamber through a first distillation step performed in at least one first distiller (DIST1) and condensation in at least one exchanger (HEAT1); - drying of said material in said vacuum chamber; characterized in that said at least one solvent is a solvent which at atmospheric pressure boils at a temperature between 15°C and 60°C, and in that said step of regeneration of said solvent is carried out through thermal compression, which more specifically comprises the following steps: - suction of the vapours of said solvent from said first distiller (DIST1) through a first pump interposed between said first distiller (DIST1) and said exchanger (HEAT1), - compression of said vapours at a higher pressure compared to the pressure present in said first distiller (DIST1), so that the temperature of said compressed vapours is higher than the boiling temperature of said solvent in the liquid state contained in said first distiller (DIST1); - introduction of said compressed vapours in said at least one exchanger (HEAT1); - introduction of said solvent in the liquid state contained in said first distiller (DIST1) in said at least one exchanger (HEAT1); - heat exchange in said at least one exchanger (HEAT1) between said compressed vapours and said solvent in the liquid state, wherein the thermal energy of condensation of said vapours is transmitted to said liquid solvent, - recirculation of said liquid solvent in said first distiller (DIST1), - so that the evaporation of said liquid solvent in said first distiller (DIST1) takes place without a further supply of thermal energy from an external source, but only with the thermal condensation energy yielded by said compressed vapours. - washing of said items in at least one vacuum-tight washing chamber using at least one solvent; - regeneration of said solvent coming from said washing chamber through a first distillation step performed in at least one first distiller (DIST1) and condensation in at least one exchanger (HEAT1); - drying of said material in said vacuum chamber; said at least one solvent is a solvent which at atmospheric pressure boils at a temperature between 15°C and 60°C, and in that said step of regeneration of said solvent is carried out through thermal compression, which more specifically comprises the following steps: - suction of the vapours of said solvent from said first distiller (DIST1) through a first pump interposed between said first distiller (DIST1) and said exchanger (HEAT1), - compression of said vapours at a higher pressure compared to the pressure present in said first distiller (DIST1), so that the temperature of said compressed vapours is higher than the boiling temperature of said solvent in the liquid state contained in said first distiller (DIST1); - introduction of said compressed vapours in said at least one exchanger (HEAT1); - introduction of said solvent in the liquid state contained in said first distiller (DIST1) in said at least one exchanger (HEAT1); - heat exchange in said at least one exchanger (HEAT1) between said compressed vapours and said solvent in the liquid state, wherein the thermal energy of condensation of said vapours is transmitted to said liquid solvent, - recirculation of said liquid solvent in said first distiller (DIST1), - so that the evaporation of said liquid solvent in said first distiller (DIST1) takes place without a further supply of thermal energy from an external source, but only with the thermal condensation energy yielded by said compressed vapours. - suction of the vapours of said solvent from said first distiller (DIST1) through a first pump interposed between said first distiller (DIST1) and said exchanger (HEAT1), - compression of said vapours at a higher pressure compared to the pressure present in said first distiller (DIST1), so that the temperature of said compressed vapours is higher than the boiling temperature of said solvent in the liquid state contained in said first distiller (DIST1); - introduction of said compressed vapours in said at least one exchanger (HEAT1); - introduction of said solvent in the liquid state contained in said first distiller (DIST1) in said at least one exchanger (HEAT1); - heat exchange in said at least one exchanger (HEAT1) between said compressed vapours and said solvent in the liquid state, wherein the thermal energy of condensation of said vapours is transmitted to said liquid solvent, - recirculation of said liquid solvent in said first distiller (DIST1), - so that the evaporation of said liquid solvent in said first distiller (DIST1) takes place without a further supply of thermal energy from an external source, but only with the thermal condensation energy yielded by said compressed vapours.