Device for purifying a process fluid and dehumidifying plant including such a device

A device for purifying a process fluid that flows in a dehumidifying plant for dehumidifying plastics in granular and/or microgranular and/or powder and/or flake or similar form intended to supply one or more user machines and subsequently injection and/or blow and/or compression moulding, such plastics, wherein the device comprises:

• a first layer configured for filtering said process fluid,
• a second layer configured for reducing, by adsorption, substances that are harmful for health, which are present in said process fluid,
• wherein said second layer is made of at least one absorbent material having absorption and affinity features in relation to said substances that are harmful for health, wherein said at least one absorbent material consists of active carbons in the form of an extruded element,
• wherein said second layer is formed by a plurality of extruded elements, each extruded element having a cube or parallelpipedon shape, that are composable in a modular manner and each extruded element comprising through channels, said through channels being configured for channeling a flow of process fluid from an outer zone of the device to an inner zone of the device with respect to an advancement direction of said flow of process fluid.