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公开(公告)号：US20240149220A1
公开(公告)日：2024-05-09
申请号：US18281533
申请日：2022-03-15
发明人： Ryoichi Takada , Yuki Suga , Takahiro Osaki , Keitaro Suzumura
CPC分类号： B01D61/58 , B01D61/0024 , B01D61/32 , B01D71/028 , B01D61/002 , B01D61/243 , B01D2317/02 , B01D2317/04
摘要： A method for reducing the volume of a raw material liquid, the raw material liquid containing at least a valuable and a first solvent, wherein the raw material liquid further contains an accessory component other than the valuable and the first solvent, or contains a mixed solvent including the first solvent and a second solvent as a solvent, and the method for reducing the volume of the raw material liquid is performed by combining a first process in which the first solvent is removed from the raw material liquid and a second process in which the concentration of the second solvent or the accessory component is adjusted from the raw material liquid using a dialysis method with a dialysis membrane.
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2.发明公开公开(公告)号：US20240325977A1
公开(公告)日：2024-10-03
申请号：US18576187
申请日：2022-08-31
发明人： Yuji Katayama , Masato Mikawa , Takahiro Osaki
IPC分类号： B01D61/00 , B01D67/00 , B01D69/04 , B01D69/06 , B01D69/08 , B01D69/10 , B01D71/56 , G01N1/40
CPC分类号： B01D61/005 , B01D67/0016 , B01D69/043 , B01D69/06 , B01D69/087 , B01D69/10 , B01D71/56 , G01N1/4005 , G01N2001/4016
摘要： The present invention is a concentration method for concentrating, before performing analysis using an analysis device, an analysis solution that includes an analysis solute and an analysis solvent. The concentration method is based on forward osmosis in which, using a concentration device, the analysis solution and the induction solution are brought into mutual contact via a forward osmosis membrane so that the analysis solvent within the analysis solution is removed by being allowed to pass through the forward osmosis membrane and be transferred into the induction solvent. The concentration device includes: a forward osmosis membrane module including the forward osmosis membrane; an analysis solution tank; analysis solution feed piping: an induction solution tank; and induction solution feed piping. The total of the capacity of an analysis solution fluid flow section of the forward osmosis membrane module and the capacity of the analysis solution feed piping is 500 mL or less. The concentration of the analysis solute in the analysis solution is 0.01 ppm or less, and the concentration of the analysis solute in the analysis solution after concentration is 0.02 ppm or greater.
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公开(公告)号：US20240166574A1
公开(公告)日：2024-05-23
申请号：US18272304
申请日：2022-01-14
CPC分类号： C07B63/00 , B01D61/0022 , B01D61/005 , B01D2311/2643
摘要： Provided is a method for processing a feed solution, which is an organic solution containing a small amount of water, using forward osmosis under a non-heated condition to obtain a dehydrated feed solution without causing degradation or change in quality of a solute. This method is for dehydrating a feed solution containing a first organic solvent, water, and a first solute, and comprises a dehydration step for bring the feed solution and an organic draw solution containing a second organic solvent into contact with each other through a forward osmosis membrane to obtain a dehydrated feed solution that has the moisture content thereof reduced to less than 1 mass % through dehydration. In one mode, the initial moisture content of the feed solution in the dehydration step is not less than 1 mass % but less than 30 mass %, and the initial moisture content of the organic draw solution is less than the initial moisture content of the feed solution.
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公开(公告)号：US20230264150A1
公开(公告)日：2023-08-24
申请号：US18013332
申请日：2021-06-29
CPC分类号： B01D63/021 , B01D71/54 , B01D71/56 , B01D69/08 , B01D2325/02834
摘要： This forward-osmosis composite hollow fiber membrane module has hollow fiber bundles, wherein: the hollow fibers are each such that a separation active layer of a high-molecular polymer thin film is provided on the inner surface of a macroporous hollow fiber support film formed from a high-molecular polymer including polyketone; the film surface area of the hollow fiber bundles is 100 cm2 or greater; and the coefficient of variation of the average thickness of the separation active layer in the radial and thickness directions of the hollow fiber bundle is 0-60%, said coefficient being calculated through a method for measuring the mass of the separation active layer portion in a scanning electron microscope image in which a thickness-direction cross section of the separation active layer is imaged.
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