Filter granulate

Patent metadata

Field	Value
Publication number	US-9637237-B2
Application number	US-201313765808-A
Country	US
Kind code	B2
Filing date	Feb 13, 2013
Priority date	Feb 20, 2012
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

The invention relates to a filter granulate for binding constituents of a gas flow.
The invention furthermore relates to the use of such a filter granulate for filtering the breathing air in means of transport, more particularly aircraft, as well as to an aircraft equipped with a filter comprising a filter granulate according to the invention.

First claim

The invention claimed is:

1. A filter granulate for binding constituents of a gas flow, said filter granulate comprising filter particles that have the following components:
a) a component for the physisorption of constituents,
b) a component for the chemisorption of constituents,
c) a component for the dissolving of oil constituents wherein said filter granulate has an average particle diameter of from 100 μm to 5 mm.

2. The filter granulate of claim 1 , wherein the physisorption component is selected from the group consisting of active carbon, bentonite, siliceous earths and zeolites.

3. The filter granulate of claim 1 wherein the chemisorption component contains peptides or proteins.

4. The filter granulate of claim 3 , wherein the chemisorption component contains keratin-containing fibers.

5. The filter granulate of claim 1 , wherein the component for dissolving oil constituents contains ionic liquids.

6. The filter granulate of claim 5 , wherein the ionic liquids contain cations selected from the group consisting of optionally alkylated imidazolium, pyridinium, pyrrolidinium, guanidinium, uronium, thiouronium, piperidinium, morpholinium, ammonium and phosphonium ions, and anions selected from the group consisting of tetrafluoroborates, trifluoracetates, triflates, hexafluorophosphates, phosphinates, tosylates, imides, amides, sulfates and halides.

7. The filter granulate of claim 1 , wherein said filter granulate has a matrix, wherein constituents of the matrix comprise physisorption components and/or chemisorption components.

8. The filter granulate of claim 7 , wherein the matrix contains binders.

9. The filter granulate of claim 8 , wherein the binders are selected from the group consisting of mannuronic salts, guluronic salts, alginate salts and pectinic salts.

10. The filter granulate of claim 1 , wherein the filter granulate has a matrix, wherein said matrix encloses ionic liquids.

11. A filter nonwoven, said filter nonwoven comprising a filter granulate according to claim 1 .

12. A method of treating breathing air in a means of transport comprising:
filtering said breathing air using a filter granulate according to claim 1 and/or a filter nonwoven comprising a filter granulate according to claim 1 .

13. A method of treating breathing air in an aircraft, comprising:
filtering bleed air from a compressor of an aircraft engine using a filter granulate according to claim 1 and/or a filter nonwoven comprising a filter granulate according to claim 1 .

14. A filter for filtering the breathing air in means of transport, wherein said filter has a filter granulate according to claim 1 and/or a filter nonwoven comprising a filter granulate according to claim 1 .

15. The filter of claim 14 , wherein the filter granulate and filter nonwoven are provided in a sandwich-like arrangement.

16. An aircraft, said aircraft having at least one filter according to claim 14 for filtering the breathing air.

17. The aircraft of claim 16 , said aircraft comprising a bleed-air valve, a cooling unit, a mixing unit, and supply ducts having outlets in a cabin and/or a cockpit, wherein said at least one filter is arranged at one or more of the following installation sites:
between the bleed-air valve and the cooling unit,
between the cooling unit and the mixing unit,
between the mixing unit and the outlet of the supply ducts in the cabin and/or cockpit.

18. The aircraft of claim 17 , wherein said aircraft comprises a pressurized cabin, and wherein said at least one filter is arranged inside the pressurized cabin, before the outlet of the supply ducts in the cabin and/or cockpit.

19. The method of claim 12 , wherein said means of transport is an aircraft.

20. The filter of claim 14 , wherein said means of transport is an aircraft.

Assignees

• Lufthansa Technik Ag

Inventors

• Paul Manfred
• Sweredjuk Robert
• Pommersheim Rainer

Classifications

• B01D53/02 Primary

  by adsorption, e.g. preparative gas chromatography {(solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01)} · CPC title

• B64D2013/0651

  comprising filters, e.g. dust filters · CPC title

• B01D2253/25

  Coated, impregnated or composite adsorbents · CPC title

• B01J20/24

  Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives · CPC title

• B01D2259/4575

  in aeroplanes or space ships · CPC title