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AssigneeStork Prints B.V.
InventorGeert Feye Woerlee
Estimating the term…
A dissolving device for dissolving a particulate solid in a supercritical or almost critical fluid comprises a circulation loop, in which there is a feed for feeding a feed stream of the supercritical or almost critical fluid, a cyclone, which is in communication with the feed and has a principal discharge for discharging a principal discharge stream of a solution of the particulate solid in the supercritical or almost critical fluid and has an auxiliary discharge for discharging an auxiliary stream of the supercritical or almost critical fluid with solid particles dispersed therein, the auxiliary discharge being in communication with the said feed. A dissolving device of this type has a low pressure drop and a high dissolving rate compared to the prior art.
Dissolving device for dissolving a particulate solid in a stream of supercritical or almost critical fluid, comprising a circulation loop, comprising a feed for feeding a feed stream of the supercritical or almost critical fluid, a cyclone, which is in communication with the feed and has a principal discharge for discharging a principal discharge stream of a solution of the particulate solid in the supercritical or almost critical fluid and has an auxiliary discharge for discharging an auxiliary stream of the supercritical or almost critical fluid with solid particles dispersed therein, the auxiliary discharge being in communication with the said feed.
Dyeing device for dyeing a substrate with a dye which is dissolved in a stream of supercritical or almost critical fluid, comprising a principal line system with a dyeing vessel for accommodating the substrate to be dyed, and a dissolving device for dissolving a particulate dye in a supercritical or almost critical fluid, comprising a circulation loop, comprising a feed for feeding a feed stream of the supercritical or almost critical fluid, a cyclone, which is in communication with the feed and has a principal discharge for discharging a principal discharge stream of a solution of the particulate solid in the supercritical or almost critical fluid and has an auxiliary discharge for discharging an auxiliary stream of the supercritical or almost critical fluid with solid particles dispersed therein, the auxiliary discharge being in communication with the said feed, the entry to the dyeing vessel being connected to the principal discharge of the cyclone, and the discharge of the dyeing vessel being connected to the feed of the dissolving device.
Method for dissolving a particulate solid, in particular a dye, in a supercritical or almost critical fluid, comprising at least the step a) of bringing the particulate solid into contact with a stream of the supercritical or almost critical fluid, wherein step a) is carried out in a dissolving device for dissolving a particulate solid in a stream of supercritical or almost critical fluid, comprising a circulation loop, comprising a feed for feeding a feed stream of the supercritical or almost critical fluid, a cyclone, which is in communication with the feed and has a principal discharge for discharging a principal discharge stream of a solution of the particulate solid in the supercritical or almost critical fluid and has an auxiliary discharge for discharging an auxiliary stream of the supercritical or almost critical fluid with solid particles dispersed therein, the auxiliary discharge being in communication with the said feed, in such a manner that solid particles with dimensions of larger than 15 micrometers are substantially kept in the circulation loop.
Dependencies are inferred from the claim text.