The invention relates to a device and method for obtaining a desiccated product from blood or derivatives. The device comprises a multiple-effect vacuum evaporation system (2), a vacuum dryer (3) with vertical plates, including stirrers (3A3) that extend the exchange surface, and an ozoniser (4)； and wherein the system of evaporators (2) and/or dryer (3) use the residual effluents of an industry as energy source. The method comprises the steps of injecting the blood into a system of multiple-effect evaporators, and sending the concentrated blood to a dryer. In the dryer, the blood is stirred by the action of stirrers, and is exposed to the action of the ozone injected by an ozoniser.
