Process for purifying a gas and apparatus for the implementation of such a process
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsJean-Christophe Rostaing, Jean-Claude Parent, Francis Bryselbout, Michel Moisan
Life of this patent
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Abstract
Provided is a process for purfying a gas. In the process, the gas to be purified flows through a hollow dielectric tube. An electric field in the gas to be purified is created by a traveling electromagnetic wave which travels in the dielectric tube and is suitable for creating, in the gas, an atmospheric-pressure plasma which is not in local thermodynamic equilibrium, for the purpose of dissociating impurities in the gas in order to form reactive compounds. The formed reactive compounds are reacted with a corresponding reactive material for eliminating the reactive compounds from the gas to be purified.
Claims22
A process for purifying a gas, comprising the steps of:
- flowing the gas to be purified through a hollow dielectric tube;
- creating an electric field in the gas to be purified by a traveling electromagnetic wave which travels in the dielectric tube and creates, in the gas, an atmospheric-pressure plasma which is not in local thermodynamic equilibrium, for the purpose of dissociating impurities in the gas to form reactive compounds;
- and
- reacting the formed reactive compounds with a corresponding reactive material for eliminating said reactive compounds from the gas to be purified,
- wherein the gas to be purified consists essentially of argon, nitrogen, neon, krypton, xenon, helium, oxygen, carbon dioxide, hydrogen or a mixture thereof.
A process for purifying a gas, comprising the steps of:
- flowing the gas to be purified through a hollow dielectric tube;
- creating an electric field in the gas to be purified by a traveling electromagnetic wave which travels in the dielectric tube and creates, in the gas, an atmospheric-pressure plasma which is not in local thermodynamic equilibrium, for the purpose of dissociating impurities in the gas to form reactive compounds;
- and
- reacting the formed reactive compounds with a corresponding reactive material for eliminating said reactive compounds from the gas to be purified, wherein the gas to be purified comprises krypton or xenon.
A process for purifying a gas, comprising the steps of:
- flowing the gas to be purified through a hollow dielectric tube;
- creating an electric field in the gas to be purified by a traveling electromagnetic wave which travels in the dielectric tube and creates, in the gas, an atmospheric-pressure plasma which is not in local thermodynamic equilibrium, for the purpose of dissociating impurities in the gas to form reactive compounds;
- and
- reacting the formed reactive compounds with a corresponding reactive material for eliminating said reactive compounds from the gas to be purified,
- wherein the gas to be purified is the product of a distillation process and wherein the gas to be purified consists essentially of argon, nitrogen, neon, krypton, xenon, helium, oxygen, carbon dioxide, hydrogen or a mixture thereof.
A process for purifying a gas, comprising the steps of:
- flowing the gas to be purified through a hollow dielectric tube;
- creating an electric field in the gas to be purified by a traveling electromagnetic wave which travels in the dielectric tube and creates, in the gas, an atmospheric-pressure plasma which is not in local thermodynamic equilibrium, for the purpose of dissociating impurities in the gas to form reactive compounds;
- and
- reacting the formed reactive compounds with a corresponding reactive material for eliminating said reactive compounds from the gas to be purified,
- wherein the gas to be purified is supplied from a bottle in which the gas is stored under pressure, and wherein the gas to be purified consists essentially of argon, nitrogen, neon, krypton, xenon, helium, oxygen, carbon dioxide, hydrogen or a mixture thereof.
Dependencies are inferred from the claim text.