Membrane separation process for cracked gases
AssigneeLummus Crest, Inc.
InventorsRichard K. Barchas, Thomas P. Hickey
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Abstract
A process for recovering hydrogen from a cracking effluent wherein a cracking effluent is compressed, and then at least a portion of the hydrogen is separated from the cracking effluent prior to cooling of the cracking effluent to remove lower-boiling components. The separation of hydrogen is preferably accomplished by passing the cracking effluent through at least one semi-permeable membrane.
Claims15
A process for recovering hydrogen, carbon dioxide, and water from a cracking effluent containing at least one olefin, comprising:
- compressing said cracking effluent in at least one compression stage;
- separating at least a portion of the hydrogen, carbon dioxide, and water from the compressed cracking effluent prior to refrigerating said cracking effluent to separate low-boiling components;
- and
- subsequently cooling the effluent to effect low temperature separation of low-boiling components.
A process for recovering hydrogen, carbon dioxide, and water from a cracking effluent containing at least one olefin, comprising:
- compressing said cracking effluent in at least one compression stage;
- passing said compressed cracking effluent through at least one semi-permeable membane to separate at least a portion of the hydrogen, carbon dioxide, and water therefrom prior to refrigerating said cracking effluent to separate low-boiling components;
- and
- subsequently cooling the effluent to effect low temperature separation of low boiling components.
Dependencies are inferred from the claim text.