Claims
- 1. A method for removing impurities from process gas stream comprising:contacting the gas stream with an ultra-low emission carbon material, wherein said ultra-low emission carbon material reduces the concentration of the impurities to less than 1 part per billion by volume without concurrently emitting moisture into said process gas being purified, to produce a purified gas.
- 2. The method of claim 1, wherein the concentration of said impurities in said purified gas is less than 100 parts per trillion.
- 3. The method of claim 1, wherein said impurities comprise organic compounds.
- 4. The method of claim 3, wherein said organic compounds comprise straight chain or branched chain hydrocarbons.
- 5. The method of claim 3, wherein said organic compounds comprise aromatic hydrocarbons.
- 6. The method of claim 4, wherein said hydrocarbon is hexane.
- 7. The method of claim 5, wherein said aromatic hydrocarbon is benzene, or ethylbenzene.
- 8. The method of claim 1, wherein said impurities comprise carbon dioxide.
- 9. The method of claim 1, wherein said impurities comprise carbon monoxide.
- 10. The method of claim 1, wherein said impurities comprise water.
- 11. The method of claim 1, wherein said ultra-low emission carbon is maintained in a substantially non-contaminating environment prior to contact with said impure process gas stream.
RELATED APPLICATIONS
The present invention is a divisional of U.S. patent application Ser. No. 09/777,741, filed Feb. 6, 2001 and entitled “Method and Materials for Purifying Reactive Gases Using Preconditioned Ultra-Low Emission Carbon Material,” now issued as U.S. Pat. No. 6,547,861, which is a Continuation-in-Part application of U.S. patent application Ser. No. 09/748,734, filed Dec. 26, 2000 and entitled “Method and Apparatus for Removing Trace Impurities from a Gas Using Superactivated Carbon Material,” now issued as U.S. Pat. No. 6,425,946 B1.
US Referenced Citations (17)
Foreign Referenced Citations (3)
Number |
Date |
Country |
55090419 |
Jul 1980 |
JP |
06024737 |
Feb 1994 |
JP |
10297919 |
Nov 1998 |
JP |
Non-Patent Literature Citations (1)
Entry |
S.S. Barton, et al. “Water and Cyclohexane Vapour Adsorption on Oxidized Porous Carbon,” Carbon, vol. 22, pp. 265-272 (1984). |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/748734 |
Dec 2000 |
US |
Child |
09/777741 |
|
US |