HELIUM-ENRICHED HELIUM-HYDROGEN MIXTURE FROM AMMONIA SYNTHESIS VENT GAS USING REGENERATORS TO CONGEAL RESIDUAL NITROGEN
For the production of helium, a helium-containing vent gas from an ammonia synthesis gas is used as the starting material. The vent gas is subjected to several partial condensation steps and is also cooled in a regenerator to deposit residual nitrogen, argon and methane impurities. A stripping colum...
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Zusammenfassung: | For the production of helium, a helium-containing vent gas from an ammonia synthesis gas is used as the starting material. The vent gas is subjected to several partial condensation steps and is also cooled in a regenerator to deposit residual nitrogen, argon and methane impurities. A stripping column is preferably employed to obtain pure liquid hydrogen and a gaseous helium-hydrogen mixture further enriched in helium. |
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