Patent ID: 6083399
Filing Date: 2000-07-04
Classification: B01D,F04B,F05B,F05C,F16K,G01F,G01N,G21F

Abstract:
A method of supercritical fluid extracting wherein a selected extracting fluid, containing extract is collected in a collector, operated in a selected temperature range, and the extract is subsequently transferred to a selected collection solvent, comprising the steps of:providing an insulated capillary restrictor tube;mounting the insulated capillary restrictor tube in a collector;the step of providing the insulated capillary restrictor tube including the substeps of selecting an insulation able to reduce heat loss from an extractant to a minimum and cause the extractant's temperature to be in a range within which the extractant is sufficiently hot so the extractant does not freeze or deposit within the insulated capillary restrictor tube but not so hot as to reduce partitioning of extract between the extractant and a collection solvent, before the extractant leaves the collection solvent, and covering at least a portion of a capillary tube with the insulation whereby mounting of the insulated restrictor tube is completed.