Patent ID: 11964069
Assignee: SIDEL PARTICIPATIONS
Field: Chemical engineering (Chemistry)
Classification: CPC A  B | IPC A

Claim 0:
1. A method for sterilizing gas filtration means, the method comprising:
heating a stream of compressed air to about 220° C. to obtain a continuous stream of hot air;
delivering the heated air to a chamber, the chamber comprising a heating means;
injecting sequentially, with a given interval (t) of time between two successive injections, a given dose of hydrogen peroxide in the liquid state introduced into the continuous stream of the hot air to form a gaseous mixture comprising hot air and the hydrogen peroxide;
applying, by circulating the gaseous mixture through the gas filtration means a specified amount of hydrogen peroxide vapor, in which said specified amount of hydrogen peroxide is a total amount necessary to sterilize the gas filtration means for a sterilization cycle and wherein the given dose is a fraction of the specified amount; and
sterilizing by circulating the continuous stream of hot air through said filtration means during said interval (t) to eliminate by evaporation all or part of the hydrogen peroxide that is deposited on said filtration means during said applying step.