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US 2020/0316235 A1Published application
Powder sterilization method and device
AssigneeFydec Holding SA
InventorsYves Dietrich, Frederic Dietrich
Life of this patent
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Abstract
A powder sterilization method for sterilizing powder, in particular an active pharmaceutical ingredient in powder form or food in powder form, using fluid vapor, in particular steam. According to the invention, the fluid vapor is applied to the powder in an evacuated treatment chamber (3), in particular it is applied to the powder during its free fall along a drop section (7), in particular in countercurrent.
Claims22
A powder sterilization method for sterilizing powder using fluid vapor, the fluid vapor being applied to the powder in an evacuated treatment chamber (3),
- the fluid vapor being applied to the powder during a free fall of the powder along a drop section (7),
- wherein evacuation means for providing a negative pressure in the treatment chamber (3) are operated in a permanent and continuous manner to provide a negative pressure in the treatment chamber, a suction pressure thus being permanently applied and the application of the fluid vapor causing the pressure to rise during the free fall after the powder has been supplied, and the evacuation means continuing to apply suction to the treatment chamber (3) during said fluid vapor application.
Dependencies are inferred from the claim text.