Low-temperature purification of fluids
An adsorption method is described for purifying gas streams. It utilizes a temperature at or below the freezing point of the constituents to be adsorptively removed from the stream. Operating at or below such temperature greatly increases the adsorption capacity of the adsorptive material. For example, the method described may be utilized for purifying helium recovered from helium-containing natural gas. Removable from such a helium gas stream are hydrogen, methane and heavier hydrocarbons, carbon monoxide, carbon dioxide, nitrogen, oxygen, neon, argon, krypton, and xenon. Removable from a methane stream (natural gas) are hydrogen sulfide, sulfur dioxide, carbon dioxide, moisture, and other minor amount constituents often part of a methane stream. While the invention is particularly described in terms of its application to a purification process of helium, those knowledgeable in the art will recognize that it may also be used for the purification of other types of gas streams. (10 claims)
- Assignee:
- TUL; EDB-81-109190
- Patent Number(s):
- US 3616602
- OSTI ID:
- 6282038
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
030300* -- Natural Gas-- Drilling
Production
& Processing
ADSORPTION
ALKANES
ARGON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HELIUM
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
KRYPTON
METHANE
NATURAL GAS
NEON
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PURIFICATION
RARE GASES
REMOVAL
SORPTION
SULFIDES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
XENON