초록 ▼

A process for removal of ethylene oxide (EO) from ambient air laden with EO is passed through a zeolite-based removal media, which preferrably consists of the acid form of zeolite ZSM-5, herein referred to as “H-ZSM-5.” The process described herein may be applied to many forms, configurations and us

A process for removal of ethylene oxide (EO) from ambient air laden with EO is passed through a zeolite-based removal media, which preferrably consists of the acid form of zeolite ZSM-5, herein referred to as “H-ZSM-5.” The process described herein may be applied to many forms, configurations and uses, such as, for example, gas masks, fume hood ventilation filters, cartridge filters, etc. Preferably, the H-ZSM-5 is configured within an apparatus in such a manner that the stream containing EO is brought into sufficient contact with the zeolite to remove the EO from the airstream.

대표청구항 ▼

1. A process for removing ethylene oxide from air over a wide range of ambient temperatures and relative humidity conditions, said process comprising:contacting the air with a zeolite for a sufficient time to remove ethylene oxide. 2. The process of claim 1 wherein the zeolite is acidified.3. The pr

1. A process for removing ethylene oxide from air over a wide range of ambient temperatures and relative humidity conditions, said process comprising:contacting the air with a zeolite for a sufficient time to remove ethylene oxide. 2. The process of claim 1 wherein the zeolite is acidified.3. The process of claim 1 wherein the zeolite is impregnated with a compound selected from the group consisting of sulfates, fluorides, chlorides, nitrates, and mixtures thereof.4. The process of claim 1 wherein the zeolite is selected from the group consisting of ZSM-5, ZSM-8, and ZSM-11.5. The process of claim 1 wherein the zeolite is impregnated with an organic acid.6. The process of claim 1 wherein the zeolite is in particle form.7. A process for the removal of ethylene oxide, ammonia, and/or formaldehyde from air over a wide range of ambient temperatures and relative humidity conditions, said process comprising:contacting the air with a zeolite for sufficient time to remove ethylene oxide, ammonia, and/or formaldehyde, said zeolite impregnated with a compound selected from the group consisting of sulfates, fluorides, chlorides, nitrates, organic acids, and mixtures thereof. 8. The process of claim 7 wherein the zeolite is selected from the group consisting of ZSM-5, ZSM-8, and ZSM-ll.9. The process of claim 7 wherein the zeolite is in particle form.