Recovery of Xe and other high value compounds

Patent metadata

Field	Value
Publication number	US-9518971-B2
Application number	US-201414506617-A
Country	US
Kind code	B2
Filing date	Oct 4, 2014
Priority date	Jun 25, 2010
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

A system and method for recovering high value gas from a process stream, material or environment containing same, e.g., xenon by contacting gas from the process stream, material or environment with a carbon adsorbent effective to sorptively capture same, free of or with reduced concentration of fluid species present with the high value gas in the high value gas-containing gas in the process stream, material or environment. Other aspects of the disclosure include a radon detection method and product.

First claim

What is claimed is:

1. A radon monitoring apparatus, comprising:
a vessel containing carbon adsorbent having sorptive affinity for radon, said vessel being configured for selective exposure of the adsorbent to a gaseous environment, and for selective isolation of the adsorbent from said gaseous environment, to thereby sample said gaseous environment for presence of radon therein, wherein the carbon adsorbent is adsorptively selective for radon in relation to atmospheric gases, and wherein the carbon adsorbent has a bulk density in a range of from 750 to 1300 kg per cubic meter (kg/m 3 ), and a porosity in which the majority of pores are in a range of from 5 to 8 Angstroms.

2. The radon monitoring apparatus of claim 1 , wherein the vessel comprises a removable closure member configured for removal for said selective exposure of the adsorbent to a gaseous environment, and re-engageable with the vessel after said selective exposure, to provide a contained sample for analytical testing for radon contamination of said gaseous environment.

3. The radon monitoring apparatus of claim 1 , further comprising written indicia constituting instructions for use of the apparatus for radon monitoring.

4. The radon monitoring apparatus of claim 1 , wherein the carbon adsorbent has a thermal conductivity of 0.44-1.20 Wm −1 K −1 .

5. The radon monitoring apparatus of claim 1 , wherein the carbon adsorbent has a bulk density in a range of from 800 to 1200 kg/m 3 .

6. The radon monitoring apparatus of claim 1 , wherein the carbon adsorbent has a bulk density in a range of from 750 to 1300 kg per cubic meter (kg/m 3 ), a porosity in which the majority of pores are in a range of from 5 to 8 Angstroms, and a thermal conductivity of 0.44-1.20 Wm −1 K −1 .

7. The radon monitoring apparatus of claim 1 , wherein the carbon adsorbent is in a monolithic form.

8. The radon monitoring apparatus of claim 1 , wherein the carbon adsorbent is in a particulate form.

9. A method of detecting radon contamination in a locus susceptible to presence or incursion of radon, comprising exposing in said locus carbon adsorbent having sorptive affinity for radon, and determining radon contamination of said locus from adsorbed radon on said carbon adsorbent, using the radon monitoring apparatus of claim 1 .

10. The method of claim 9 , wherein said vessel comprises a removable and re-engageable cap, and the cap is removed from the vessel for said exposure of the carbon adsorbent to said locus, and reengaged with the vessel after said exposure for said selective isolation of the carbon adsorbent from said locus, to thereby provide a contained sample for analytical testing for radon contamination of said gaseous environment.

11. The method of claim 10 , further comprising analytical testing of said contained sample for said determining of radon contamination of said locus.

12. The method of claim 9 , wherein the carbon adsorbent has a thermal conductivity of 0.44-1.20 Wm −1 K −1 .

13. The method of claim 9 , wherein the carbon adsorbent has a bulk density in a range of from 800 to 1200 kg/m 3 .

14. The method of claim 9 , wherein the carbon adsorbent has a thermal conductivity of 0.44-1.20 Wm −1 K −1 .

Assignees

• Advanced Tech Materials
• Entegris Inc

Inventors

• Baum Thomas H
• Carruthers J Donald
• Fricke Richard
• Sweeney Joshua B
• Mcmanus James V
• Sturm Edward A

Classifications

• B01J20/2808

  being less than 2 nm, i.e. micropores or nanopores · CPC title

• B01D2257/102

  Nitrogen · CPC title

• B01D2253/31

  Pore size distribution · CPC title

• C01B2210/0037

  Xenon · CPC title

• B01D53/1418

  Recovery of products · CPC title