Co2 desorption without stripper
AssigneeStatoil Petroleum AS
InventorJohn Arild Svendsen
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Abstract
A CO2 desorption method and equipment for performing this method is described. More specific, a method for desorbing CO2 from an absorption fluid without involving a traditional stripper but instead using a heat exchanger as a flash-tank is disclosed. Further described is the utilization of cooling heat from a condenser for cooling the lean absorbent fluid.
Claims8
A method for desorbing carbon dioxide from a CO2 rich absorption fluid comprising a CO2 absorbent, a solvent and absorbed CO2, characterised in that the method comprises
- heating the CO2 rich absorption fluid,
- expanding the heated CO2 rich absorption fluid in a flash tank,
- separating the expanded absorption fluid in a vapour phase comprising desorbed CO2 and vaporised solvent and a main liquid phase comprising CO2 lean absorption fluid,
- condensing at least part of the solvent within the vapour phase, and
- mixing the condensed solvent with the main liquid phase.
A system for desorbing carbon dioxide from a CO2 rich absorption fluid, characterised in that the system comprises a flash-tank with an inlet, a vapour outlet and liquid outlet, where the vapour outlet is in fluid communication with an inlet to a condenser, where the condenser has a condensed fluid outlet in fluid communication with the liquid outlet from the flash-tank.
Dependencies are inferred from the claim text.