Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Using disinfecting or sterilizing substance
Patent
1988-02-03
1990-09-04
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Process disinfecting, preserving, deodorizing, or sterilizing
Using disinfecting or sterilizing substance
62 11, 62 32, 62 36, 62 42, 422 34, 422260, 422289, 436 1, A61L 200, F25J 300
Patent
active
049543156
ABSTRACT:
The invention includes a method and apparatus for recovering one or more components of a sterilizing gas. Typically, the sterilizing gas is ethylene oxide, mixed with a relatively inert diluent such as a halocarbon. The sterilizing gas discharged from a sterilizing chamber is cryogenically cooled in a condenser, such that the ethylene oxide and the diluent are liquefied. The remaining gaseous impurities, such as air, are removed from the condenser, filtered, and vented to the atmosphere. The liquefied mixture of ethylene oxide and diluent is periodically drained from the condenser, and filtered to remove impurities. This liquid mixture can then be separated into its constituent components for later use. The liquid mixture can also be vaporized and combined with fresh ethylene oxide, as needed, to produce a fresh sterilizing gas mixture which is recycled to the sterilizing chamber. In the preferred embodiment, a gas chromatograph monitors the ethylene oxide content of the gas venting from the apparatus, so that the system can be programmed to prevent the undesired venting of ethylene oxide from the system. The gas chromatograph can also monitor the concentration of ethylene oxide in the gas being returned to the sterilizer, so that the composition of this recycled gas can be controlled. The invention makes the sterilizing process safer and more economical than processes of the prior art.
REFERENCES:
patent: 2488813 (1949-11-01), Garretson
patent: 3341280 (1967-09-01), Eolkin
patent: 3372980 (1968-03-01), Satas
patent: 3418338 (1968-12-01), Gilman et al.
patent: 3420068 (1969-01-01), Petit
patent: 3549312 (1970-12-01), Ernst
patent: 3644432 (1972-02-01), Hoch et al.
patent: 3989461 (1976-11-01), Skocypek et al.
patent: 4010779 (1977-03-01), Pollock et al.
patent: 4047904 (1977-09-01), Worrall
patent: 4077789 (1978-03-01), Edwards
patent: 4122684 (1978-10-01), Clarkson et al.
patent: 4249917 (1981-02-01), Tarancon
patent: 4435194 (1984-03-01), Picard et al.
patent: 4555251 (1985-11-01), Jonsson et al.
patent: 4707994 (1987-11-01), Shenoy et al.
patent: 4732595 (1988-03-01), Yoshino
Catalog of Balston, Inc. (1982, 1985).
Eilberg William H.
MG Industries
Santiago Amalia
Warden Robert J.
LandOfFree
Method for recovery of sterilizing gas does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for recovery of sterilizing gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for recovery of sterilizing gas will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-440423