DESCRIZIONE
Modular system of drying humid material, comprising a drier housing(100) having a material inlet (101) and outlet (104), a drying gas inlet(106) and outlet (105), a particle separator (103; 600) downstream of drier housing (100). Drier housing (100) comprises drying chambers (108', 108''). The system further comprises an air fan (203), and a heater (206). A gas duct (200) connecting drying gas inlet (106) and drying gas outlet (105) defines a closed loop. A condenser (300) is arranged in gas duct (200). Drying chambers (108', 108'') comprises a rotary impeller means (102), and drying gas inlets (106', 106''). A dried-hot product cooler (400) comprising a housing (405) having a dried-hot product inlet (401), a cooled dried product outlet (402), a cool air supply means (403), and a fan (404) arranged to draw cooled air through dried hot product in cooler (400).