Acid-gas absorbing tablet and method of use

• US 20060257478A1
• Filed: 07/14/2006
• Published: 11/16/2006
• Est. Priority Date: 01/23/2001
• Status: Active Grant

• Current Assignee: Multisorb Technologies Incorporated (FGI Equity LLC)
• Original Assignee: Multisorb Technologies Incorporated (FGI Equity LLC)
• Inventors: Patrone, Louis, Ziarniak, Patricia A., Miller, Stanley B. III
• Granted Patent: US 7,892,527 B2
• Time in Patent Office: Days
• US Class Current: 424/464
• CPC Class Codes: B01D 2253/10 Inorganic adsorbents
• CPC Class Codes: B01D 2253/102 Carbon
• CPC Class Codes: B01D 2253/106 Silica or silicates
• CPC Class Codes: B01D 2253/202 Polymeric adsorbents
• CPC Class Codes: B01D 2257/70 Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
• CPC Class Codes: B01D 53/02 by adsorption, e.g. preparative gas chromatography solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01
• CPC Class Codes: B01D 53/04 with stationary adsorbents B01D53/025 takes precedence
• CPC Class Codes: B01J 20/043 Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
• CPC Class Codes: B01J 20/103 comprising silica
• CPC Class Codes: B01J 20/20 comprising free carbon; comprising carbon obtained by carbonising processes
• CPC Class Codes: B01J 20/2803 Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
• CPC Class Codes: B01J 20/28042 Shaped bodies; Monolithic structures

Abstract

An acid-gas absorbing tablet including in relatively sufficient proportions an adsorbent which may be activated carbon or silica gel or a mixture thereof, potassium carbonate, polyvinylpyrrolidinone, and potassium bicarbonate. A method of absorbing acid gases from a confined environment utilizing the above tablet by inserting it into the confined environment.

Claims

1. An acid-gas absorbing tablet comprising in relatively sufficient proportions by weight at least one adsorbent, a binder, a first basic salt, a second basic salt, said first basic salt being primarily associated with said adsorbent, and said second basic salt being primarily associated with said binder.

2. An acid-gas absorbing tablet as set forth in claim 1 wherein said first basic salt is selected from the group consisting of sodium and potassium carbonates and bicarbonates.

3. An acid-gas absorbing tablet as set forth in claim 1 wherein said first basic salt and said second basic salt are selected from the group consisting of sodium and potassium carbonates and bicarbonates.

4. An acid-gas absorbing tablet as set forth in claim 1 wherein said first basic salt is selected from the group consisting of sodium and potassium carbonates, and said second basic salt is selected from the group consisting of sodium and potassium bicarbonates.

5. A method of absorbing acid gases from an electronic device comprising the steps of providing an acid-gas absorbing tablet comprising in relatively sufficient proportions by weight at least one adsorbent, a binder, a first basic salt primarily associated with said adsorbent, a second basic salt primarily associated with said binder, and installing said acid-gas absorbing tablet in said electronic device.

6. A method as set forth in claim 5 wherein said first basic salt is selected from the group consisting of sodium and potassium carbonates and bicarbonates.

7. A method as set forth in claim 5 wherein said first basic salt and said second basic salt are selected from the group consisting of sodium and potassium carbonates and bicarbonates.

8. A method as set forth in claim 5 wherein said first basic salt is selected from the group consisting of sodium and potassium carbonates, and wherein said second basic salt is selected from the group consisting of sodium and potassium bicarbonates.

9. A method of fabricating a mixture for producing an acid-gas absorbing tablet comprising the steps of providing an adsorbent and a first basic salt, blending said adsorbent and said first basic salt to produce a first mixture, providing a binder and a second basic salt, blending said binder and said second basic salt to produce a second mixture, and blending said first and second mixtures wherein said first and second basic salts are different.

10. A method of fabricating a mixture as set forth in claim 9 wherein said first basic salt and said second basic salt are selected from the group consisting of sodium and potassium carbonates and bicarbonates.

11. A method of fabricating a mixture as set forth in claim 9 wherein said first basic salt is selected from the group consisting of sodium and potassium carbonates, and wherein said second basic salt is selected from the group consisting of sodium and potassium bicarbonates.

12. A method of fabricating a mixture as set forth in claim 9 wherein said adsorbent is a blend of activated carbon and silica gel.

13. A method of fabricating a mixture as set forth in claim 12 wherein said first basic salt and second basic salt are selected from the group consisting of sodium and potassium carbonates and bicarbonates.

14. A method of fabricating a mixture as set forth in claim 12 wherein said first basic salt is selected from the group consisting of sodium and potassium carbonates, and wherein said second basic salt is selected from the group consisting of sodium and potassium bicarbonates.

15. A method of fabricating a mixture as set forth in claim 12 wherein said blend of adsorbent is in any proportions including total activated carbon or total silica gel.

16. A method of fabricating a mixture as set forth in claim 15 wherein said first basic salt and second basic salt are selected from the group consisting of sodium and potassium carbonates and bicarbonates.

17. A method of fabricating a mixture as set forth in claim 15 wherein said first basic salt is selected from the group consisting of sodium and potassium carbonates, and wherein said second basic salt is selected from the group consisting of sodium and potassium bicarbonates.

18. A method of fabricating said acid-gas absorbing tablet from the mixture set forth in claim 9 including the step of pressing said blend of said first and second mixtures into a table.

19. An acid-gas absorbing tablet comprising a first blended mixture of at least one adsorbent and a basic salt, a second blended mixture of a binder and a second basic salt, and a blended mixture of said first and second blended mixtures.

20. An acid-gas absorbing tablet comprising first blended mixture means for absorbing an acid-gas by converting said acid-gas into a salt and carbon dioxide and water which is adsorbed by an adsorbent therein for subsequent evaporation to the atmosphere, and second blended mixture means including a binder for binding said second blended mixture means with said first blended mixture means and for both absorbing said acid-gas by converting said acid-gas into a salt and carbon dioxide and water which is adsorbed by said adsorbent for subsequent evaporation to the atmosphere and for converting said acid-gas which is adsorbed and desorbed from said binder into a salt and carbon dioxide and water which is adsorbed by said adsorbent for subsequent evaporation to the atmosphere.

21. An acid-gas absorbing tablet as set forth in claim 20 wherein said first blended mixture means comprises at least one adsorbent and a first basic salt, and wherein said second blended mixture means comprises said binder and a second basic salt.

22. An acid-gas absorbing tablet as set forth in claim 21 wherein said first basic salt is selected from the group consisting of sodium and potassium carbonates and bicarbonates.

23. An acid-gas absorbing tablet as set forth in claim 22 wherein said second basic salt is selected from the group consisting of sodium and potassium carbonates and bicarbonates.

24. An acid-gas absorbing tablet as set forth in claim 23 wherein said binder is polyvinylpyrrolidinone.

25. An acid-gas absorbing tablet as set forth in claim 21 wherein said first basic salt is selected from the group consisting of sodium and potassium carbonates.

26. An acid-gas absorbing tablet as set forth in claim 25 wherein said second basic salt is selected from the group consisting of sodium and potassium carbonates.

27. An acid-gas absorbing tablet as set forth in claim 26 wherein said binder is polyvinylpyrrolidinone.

28. An acid-gas absorbing tablet comprising an absorbent, a first basic salt, a binder, and a second basic salt.

29. An acid-gas absorbing tablet as set forth in claim 28 wherein said first basic salt is selected from the group consisting of sodium and potassium carbonates, and wherein said second basic salt is selected from the group consisting of sodium and potassium bicarbonate.