Dual temperature exchange systems

Details Dual temperature exchange systems Dual temperature exchange systems

B - Operations, Transporting

01

D

165/1

B01D 59/33 (2006.01)

Patent

CA 1062606

+ ABSTRACT OF THE DISCLOSURE The present invention provides in an integrated system for concentrating a desired material exchangeable between two separate fluid substances containing said material and another material exchangeable therewith, at least one of said fluid substances being in liquid phase, said system including (a) a first enrichment section comprising a first stage operating system having at least one pair of dual temperature exchange hot and cold towers and a prescribed feed supply of one of said fluid substances, (b) an intermediate enrichment section comprising an operating system of at least a second stage of dual temperature exchange hot and cold towers, and (c) a final enrichment section comprising a system for further enriching at least one of the enriched fluids from said intermediate enrichment section to a prescribed final product concentration, the improvement which provides for modification to increase the quantity of final product output without physical alteration of the intermediate and final enrichment sections, wherein (1) the hot and cold towers of the first enrichment section include countercurrent contact exchange elements sufficient to provide that when the volume of enriched fluids withdrawn from said first enrichment section and delivered to said second enrichment section is fractionally reduced, such reduced quantity will transport to the intermediate enrichment section substantially the same amount of the desired material at an increased concentra- tion, and (2) the final enrichment section is of sufficient capacity to produce a final product of the prescribed concentra- tion when said volume of enriched fluids delivered to said second enrichment section is not so fractionally reduced.

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