Supercritical fluid material scouring

Supercritical fluid ("SCF") is used to scour a target material to leave scour elements, such as oligomers and oils from the target material. Carbon dioxide ("CO2") is introduced into a pressure vessel also containing the target material to be scoured. The CO2 is raised in tempera...

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Bibliographische Detailangaben
Hauptverfasser:	Kelly, Matt W, Montero, Gerardo A, Kanchagar, Anand P, Panchmatia, Pankaj Rugnath
Format:	Patent
Sprache:	eng
Schlagworte:	ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL BLEACHING LEATHER OR FURS DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS,YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM DYEING OR PRINTING TEXTILES FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR GRINDING LAUNDERING PERFORMING OPERATIONS POLISHING TEXTILES TRANSPORTING TREATING TEXTILE MATERIALS BY LIQUIDS, GASES OR VAPOURS TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS
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Beschreibung
Zusammenfassung:	Supercritical fluid ("SCF") is used to scour a target material to leave scour elements, such as oligomers and oils from the target material. Carbon dioxide ("CO2") is introduced into a pressure vessel also containing the target material to be scoured. The CO2 is raised in temperature and pressure to a SCF state. The CO2 is recirculated within the pressure vessel to scour the target material. An exchange of the CO2 is occurs allowing for the scoured elements to be removed from the CO2 and therefore from within the pressure vessel. Operation variables such as temperature, pressure, time, internal flow rate, and CO2 exchange are adjusted to achieve a scouring of the target material.