Device for recovering nanopowders and ultrafine powders contained in a gas

A device for recovering nanometer or sub-micron particles carried by a gas by generating stabilized suspensions of nanometer or sub-micron particles, the device comprising a vessel which comprises:

• means for injecting at least one liquid into the vessel;
• gas discharge means located in an upper portion of the vessel after particle filtering means;
• particle suspension outlet means;
• a liquid ring pump, configured to transfer and disperse all or part of the nanometer or sub-micron particles carried by a gas in a liquid, the pump including:
• means for introducing a gas laden with nanometer or sub-micron particles into the pump;
• means for injecting at least one liquid into the pump;
• and
• means for discharging a mixture comprising the liquid laden with particles and the gas obtained at the end of the transfer of particles;
• and wherein the vessel further comprises:
• means for introducing the mixture into the vessel;
• and
• at least one electro-acoustic transducer of piezoelectric pellet type, configured to be immersed within the vessel in a liquid, the transducer configured such that acoustic waves created at a level of the transducer propagate up to the surface of the liquid in which it is immersed and generate a fog of micron-sized droplets above the surface of the liquid.