Acid-gas absorbing tablet and method of use

• US 20060257477A1
• Filed: 07/14/2006
• Published: 11/16/2006
• Est. Priority Date: 01/23/2001
• Status: Active Grant

• Current Assignee: Donaldson Company Incorporated, Multisorb Technologies Incorporated (FGI Equity LLC)
• Original Assignee: Donaldson Company Incorporated, Multisorb Technologies Incorporated (FGI Equity LLC)
• Inventors: Patrone, Louis, Ziarniak, Patricia A., Miller, Stanley B. III
• Granted Patent: US 7,842,287 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. In an electronic device wherein acid gases are generated, the improvement of an acid-gas absorbing tablet in said electronic device, said acid-gas absorbing tablet comprising in relatively sufficient proportions by weight at least one adsorbent, a binder, and at least one basic salt.

2. In an electronic device as set forth in claim 1 including a second basic salt.

3. In an electronic device as set forth in claim 2 wherein said at least one basic salt is primarily associated with said adsorbent, and wherein said second basic salt is primarily associated with said binder.

4. In an electronic device as set forth in claim 1 wherein said at least one basic salt is selected from the group consisting of sodium and potassium carbonates and bicarbonates.

5. In an electronic device as set forth in claim 1 including a second basic salt, wherein said at least one basic salt and said second basic salt are selected from the group consisting of sodium and potassium carbonates and bicarbonates.

6. In an electronic device as set forth in claim 1 wherein said at least one basic salt is selected from the group consisting of sodium and potassium carbonates, and a second basic salt selected from the group of sodium and potassium bicarbonates.

8. An acid-gas absorbing tablet as set forth in claim 1 including a second basic salt.

9. An acid-gas absorbing tablet as set forth in claim 2 wherein said at least one basic salt is primarily associated with said adsorbent, and wherein said second basic salt is primarily associated with said binder.

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

11. An acid-gas absorbing tablet as set forth in claim 1 including a second basic salt, and wherein said at least one basic salt and said second basic salt are selected from the group consisting of sodium and potassium carbonates and bicarbonates.

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

7. An electronic device comprising an enclosure, at least one acid-gas generating component within the disclosure, an acid-gas absorbing tablet within the disclosure, said acid-gas absorbent tablet comprising in relatively sufficient proportions by weight at least one adsorbent, a binder and at least one basic salt.