Method for recovering a sterilizing gas

Details Method for recovering a sterilizing gas Method for recovering a sterilizing gas

1992-10-20

1994-02-01

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using disinfecting or sterilizing substance

62 11, 422 3, 422 28, 422 34, A61L 216, A61L 900, F25J 300

Patent

active

052830357

ABSTRACT:
In a method and an apparatus for recovering a sterilizing gas, in particular ethylene oxide (ETO), materials to be sterilized are sterilized in a sterilizing chamber with a sterilizing gas and a gas flow is withdrawn from the sterilizing chamber. At least part of the sterilizing gas contained in said gas flow is liquefied and separated. The gas flow freed from liquefied sterilizing gas is returned to the sterilizing chamber whilst at the same time at least a part of the separated sterilizing gas is replaced by addition of inert-rendering gas, reducing the concentration of the sterilizing gas in the sterilizing chamber.

REFERENCES:
patent: 3549312 (1970-12-01), Ernst
patent: 3989461 (1976-11-01), Skoycypec et al.
patent: 4130393 (1978-12-01), Fox
patent: 4150494 (1979-04-01), Rothchild
patent: 4249917 (1981-02-01), Tarancon
patent: 4812292 (1989-03-01), Joslyn
patent: 4822563 (1989-04-01), Joslyn
patent: 4954315 (1990-09-01), Brahmbhatt
patent: 5128101 (1992-07-01), Boynton
EPO Search Report List for EP A 92117278.9.

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