A powder drying system comprising at least one powder processing unit, and at least one filter unit defining a central vertical axis and including a filtering chamber accommodating a plurality of bag filters, each having a bag filter wall, a top opening and a length in the range of from 1 m to 8 m, a top portion, and an exhaust chamber at or near the top portion, in which the filtering chamber is provided with an inlet configured to allow entry of processed powder carrying gas to be filtered by passing through the bag filter wall of the bag filters, and the exhaust chamber has an outlet configured to allow exhaust of filtered gas flowing upwards from the bag filters through the top opening thereof, wherein the inlet of the filtering chamber is positioned at the top portion of the filter unit, and said inlet includes at least one inlet duct section adjacent the filtering chamber and arranged substantially centrally in the top portion of the filter unit, which inlet duct section is arranged substantially coaxial with the central vertical axis such that the gas entering the filter unit is allowed to flow substantially downwards along the central vertical axis, wherein said at least one inlet duct section comprises an internal duct and a transitional duct, which internal duct is adjacent the filtering chamber and extends substantially in parallel with the central vertical axis, which transitional duct connects the internal duct to an angled duct, which angled duct has the form of pipe segments forming a substantially 90-degree bend to the internal duct, wherein the distance between the angled duct and the end of the internal duct adjacent the filtering chamber exceeds the length of a bag filter. at least one powder processing unit, and at least one filter unit defining a central vertical axis and including a filtering chamber accommodating a plurality of bag filters, each having a bag filter wall, a top opening and a length in the range of from 1 m to 8 m, a top portion, and an exhaust chamber at or near the top portion, in which the filtering chamber is provided with an inlet configured to allow entry of processed powder carrying gas to be filtered by passing through the bag filter wall of the bag filters, and the exhaust chamber has an outlet configured to allow exhaust of filtered gas flowing upwards from the bag filters through the top opening thereof, wherein the inlet of the filtering chamber is positioned at the top portion of the filter unit, and said inlet includes at least one inlet duct section adjacent the filtering chamber and arranged substantially centrally in the top portion of the filter unit, which inlet duct section is arranged substantially coaxial with the central vertical axis such that the gas entering the filter unit is allowed to flow substantially downwards along the central vertical axis, wherein said at least one inlet duct section comprises an internal duct and a transitional duct, which internal duct is adjacent the filtering chamber and extends substantially in parallel with the central vertical axis, which transitional duct connects the internal duct to an angled duct, which angled duct has the form of pipe segments forming a substantially 90-degree bend to the internal duct, wherein the distance between the angled duct and the end of the internal duct adjacent the filtering chamber exceeds the length of a bag filter.