Process for separating solvent from spent oil sand solids using superheated steam
A process for separating solvent from spent oil sand solids involves drying the solids using superheated steam, and thereby producing a vapor comprising the vaporized solvent and vaporized water. The vapor is conveyed through a hot side of a first heat exchanger to produce a cooled stream comprising...
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Sprache: | eng |
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Zusammenfassung: | A process for separating solvent from spent oil sand solids involves drying the solids using superheated steam, and thereby producing a vapor comprising the vaporized solvent and vaporized water. The vapor is conveyed through a hot side of a first heat exchanger to produce a cooled stream comprising condensed solvent and condensed water, while a water stream is conveyed under vacuum through a cold side of the first heat exchanger to produce steam. A vacuum blower that applies the vacuum may also compress the steam to adiabatically heat the steam, before the steam is further heated by a steam superheater. The condensed water is separated from the cooled stream, and used in producing the water stream that is conveyed through the cold side of the heat exchanger, as the process continues. The steam is used in producing the superheated steam for drying the solids, as the process continues. |
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