Title:
AIRCRAFT FUEL TANK FLAMMABILITY REDUCTION METHODS AND SYSTEMS AND AIR SEPARATION METHODS USING MEMBRANES
Document Type and Number:
WIPO Patent Application WO/2014/107207
Kind Code:
A3
Abstract:
An aircraft fuel tank flammability reduction method includes contacting a membrane filter with air feed (17), permeating oxygen and nitrogen from the air feed through the membrane (22), and producing filtered air (21) from the filter (22). The filtered air (21) is produced from the filter as a result of the membrane removing any hydrocarbons containing six or more carbon atoms to produce a total of 0.001 ppm w/w or less. An air separation method includes feeding air into a filter containing a hollow fiber membrane that exhibits the property of resisting degradation due to exposure to hydrocarbons containing six or more carbon atoms. The filter (22) exhibits a pressure drop across the membrane (22) of less than 5 psi. The method includes feeding the filtered air (21) into an air separation module (12) containing a hollow fiber membrane that exhibits a susceptibility to degradation from exposure to hydrocarbons containing six or more carbon atoms.
Inventors:
EVOSEVICH BARBARA J (US)
JOJIC IVANA (US)
JOJIC IVANA (US)
Application Number:
PCT/US2013/064380
Publication Date:
December 24, 2014
Filing Date:
October 10, 2013
Export Citation:
Assignee:
BOEING CO (US)
International Classes:
B01D63/02; B64D37/32; B01D69/02; B01D69/08
Domestic Patent References:
| WO2006079782A2 | 2006-08-03 | |||
| WO2000000389A2 | 2000-01-06 | |||
| WO2014058515A2 | 2014-04-17 |
Foreign References:
| US20040000231A1 | 2004-01-01 | |||
| US20080271604A1 | 2008-11-06 |
Attorney, Agent or Firm:
WOO, Euclid et al. (PO Box 2515MC 110-SD5, Seal Beach California, US)
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