USE OF OZONE CONVERSION IN AIRCRAFT AIR MANAGEMENT
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Accused Products
Abstract
A low-temperature ozone converter contains an ozone catalyst composition supported on a honeycomb structure in cabin conditioning and/or inerting fuel tanks. The ozone converter preferably contains an ozone cracking catalyst including active manganese oxide, carried on a fiber aggregate, preferably a ceramic fiber aggregate. A gas separation unit (OBIGGS) including such an ozone converter and a hollow fiber membrane, suitable for inerting the fuel tank of an aircraft are also disclosed.
21 Citations
20 Claims
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1-10. -10. (canceled)
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11. Use of a low-temperature ozone converter containing an ozone catalyst composition supported on a honeycomb structure in cabin conditioning and/or inerting fuel tanks,
low-temperature meaning an ozone conversion efficiency of more than 95% at a temperature lower than 120° - C.,
wherein said ozone converter contains an ozone cracking catalyst comprising active manganese oxide, wherein said honeycomb structure comprises a fiber aggregate such as to provide more than 0.02 cm3/g of micropores 10-200 nm in diameter, wherein said fiber aggregate is being composed of walls having vacant pores larger than 500 nm in diameter and in an amount of more than 0.1 cm3/g.
- C.,
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12. An Environmental Control System (ECS) for aircraft cabin air management, wherein air having a temperature below 120°
- C. is passed through an ozone converter containing an ozone catalyst composition supported on a honeycomb structure,
wherein said ozone converter contains an ozone cracking catalyst comprising active manganese oxide, wherein said honeycomb structure comprises a fiber aggregate such as to provide more than 0.02 cm3/g of micropores 10-200 nm in diameter, wherein said fiber aggregate is being composed of walls having vacant pores larger than 500 nm in diameter and in an amount of more than 0.1 cm3/g. - View Dependent Claims (18)
- C. is passed through an ozone converter containing an ozone catalyst composition supported on a honeycomb structure,
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13. An Onboard Inert Gas Generating System (OBIGGS) for inerting fuel tanks, wherein air having a temperature below 120°
- C. is passed through an ozone converter containing an ozone catalyst composition supported on a honeycomb structure,
wherein said ozone converter contains an ozone cracking catalyst comprising active manganese oxide, wherein said honeycomb structure comprises a fiber aggregate such as to provide more than 0.02 cm3/g of micropores 10-200 nm in diameter, wherein said fiber aggregate is being composed of walls having vacant pores larger than 500 nm in diameter and in an amount of more than 0.1 cm3/g, and wherein the ozone-treated air is passed through a hollow fiber membrane, for removing at least a part of the oxygen present in the ozone-treated air. - View Dependent Claims (14, 15)
- C. is passed through an ozone converter containing an ozone catalyst composition supported on a honeycomb structure,
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16. A gas separation unit for generating inert gas on a vehicle having a fuel tank, wherein said gas separation unit comprises an ozone converter containing an ozone catalyst composition on a honeycomb support, and a hollow fiber membrane suitable for selective removal of oxygen located downstream from said ozone converter, and wherein said gas separation unit has no cooler,
wherein said ozone converter contains an ozone cracking catalyst comprising active manganese oxide, wherein said honeycomb structure comprises a fiber aggregate such as to provide more than 0.02 cm3/g of micropores 10-200 nm in diameter, wherein said fiber aggregate is being composed of walls having vacant pores larger than 500 nm in diameter and in an amount of more than 0.1 cm3/g.
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20. A low-temperature ozone converter containing an ozone catalyst composition in cabin conditioning and/or inerting fuel tanks, having an ozone conversion efficiency of more than 95% at a temperature lower than 120°
- C., wherein said ozone converter contains an ozone cracking catalyst comprising active manganese oxide.
Specification