Method for concentrating raw material solution, and system for concentrating raw material solution
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsTomotaka Hashimoto, Yuki Suga, Masato Mikawa, Ryoichi Takada
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Abstract
Provided are a concentration method and system for concentrating a raw material solution, and in which a raw material solution containing a solute and a solvent is concentrated to obtain a concentrate of the raw material solution, wherein the solvent contains water and an organic solvent. In the method and system for concentrating a raw material solution, the system includes a combination of: a first concentrating means for removing water in the raw material solution by means of a forward osmosis method; and a second concentrating means for evaporating and removing water and an organic solvent in the raw material solution.
Claims12
A concentration method for a feed solution containing a solute and a solvent to obtain a concentrate of the feed solution, wherein
- the solvent contains water and an organic solvent, and
- the concentration method comprises a combination of
- a first concentration method of removing water in the feed solution by a forward osmosis method, and
- a second concentration method of removing water and the organic solvent in the feed solution through evaporation,
- wherein the first concentration method and the second concentration method are carried out in parallel.
A concentration method for a feed solution containing a solute and a solvent to obtain a concentrate of the feed solution, wherein
- the solvent contains water and an organic solvent, and
- the concentration method comprises a combination of
- a first concentration method of removing water in the feed solution by a forward osmosis method, and
- a second concentration method of removing water and the organic solvent in the feed solution through evaporation,
- wherein the concentration method is carried out while controlling the ratio of water and the organic solvent in the solvent in the feed solution to be concentrated.
Dependencies are inferred from the claim text.