LIGHTS REMOVAL FROM CARBON DIOXIDE

• Main Authors: PETRIK, JOHN H, PALAMARA, JOHN EUGENE, SANDERSON, CORY E, HIGGINBOTHAM, PAUL
• Format: Patent
• Language: English; French
• Published: 14.02.2023
• Subjects: BLASTING; CHEMISTRY; COMBINED HEATING AND REFRIGERATION SYSTEMS; COMPOUNDS THEREOF; HEAT PUMP SYSTEMS; HEATING; INORGANIC CHEMISTRY; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; METALLURGY; MIXTURES BY PRESSURE AND COLD TREATMENT; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRIGERATION OR COOLING; SEPARATION; TRANSPORTING; WEAPONS

Light gases such as helium are extacted from a carbon dioxide-containing feed stream by distillation. Costly dehydration steps are avoided by pumping the liquid bottoms stream leaving the distillation column without vaporization so as to ensure that any water present in the feed remains in solution with the bulk stream leaving the process. This prevents any liquid phase water causing corrosion or solid ice or hydrates forming to plug the flow. Il est décrit une méthode dextraction de gaz légers comme lhélium par distillation à partir dun flux contenant du dioxyde de carbone. On évite ainsi des étapes de déshydratation coûteuses en pompant le flux inférieur de liquide, ce qui laisse le flux de distillation sans vaporisation pour sassurer que toute leau présente dans le flux y demeure tandis que le flux de masse quitte le procédé. On prévient la corrosion causée par leau à létat liquide et les blocages causés par la glace à létat solide ou les hydrates.