Separation of carbon dioxide and other acid gas components from hydrocarbon feeds

A process for the separation of carbon dioxide and, optionally, other acid gas components in a distillation column, operated at high pressure and low temperature, from a gaseous mixture comprising one or more hydrocarbons, including particularly methane, and hydrogen. In its preferred aspects, the f...

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Bibliographische Detailangaben
Hauptverfasser:	MARSHALL, HARRY A, EAKMAN, JAMES M
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG] CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMBINED HEATING AND REFRIGERATION SYSTEMS COMPOUNDS THEREOF GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS 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 TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A process for the separation of carbon dioxide and, optionally, other acid gas components in a distillation column, operated at high pressure and low temperature, from a gaseous mixture comprising one or more hydrocarbons, including particularly methane, and hydrogen. In its preferred aspects, the feed is predominantly methane, suitably from about 30 to about 85 mole percent and preferably from about 50 to about 80 mole percent methane. The concentration of hydrogen in the gaseous mixture will be sufficient to provide from about 6 to about 34 mole percent, preferably from about 15 to about 25 mole percent hydrogen in the rectification portion of the distillation column. The separation can be effected in a single column usually having from about 20 to about 30 theoretical distillation stages and the feed can be one constituted ab initio within the desired ranges of composition, or modified by addition of components just prior to or at the time of distillation.