FIELD: technological processes.SUBSTANCE: invention relates to a method for drying solutions to produce a granular product with increased hygroscopicity, and can be used in various areas of chemical technologies and related industries where higher requirements on the final moisture content of the product are imposed. In the chamber for conducting heat and mass transfer between the dispersed particles and the gaseous medium containing the body, placed inside a concentric vessel with a porous wall, located inside the nozzle vessel and a device for the collection of spent coolant with a porous working surface, equipped with a drive. Nozzle comprises a hollow cylindrical body with a fitting rigidly connected to the body and coaxially disposed in the upper part of the body and having a cylindrical fluid inlet connected to a diffuser axially symmetric to the body and the fitting, the hollow conical swirler is fixed in the lower part of the cylindrical hole, the conical shell of which is fixed by means of at least t
