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Membrane separation type solvent dehydration system

Great attention is recently being paid to global environmental issues, and it is now conceivable that companies will need to treat used solvents themselves. In consideration of this kind of social issue, we have developed a “membrane separation type solvent dehydration system,” which uses a polyimide membrane with superior dehydration properties developed by Ube Industries, Ltd. in combination with our own distillation and concentration technology that has resulted in solvents being more easily recovered.

THREE:Mr. Flack shook his head thoughtfully. Presently he got up, walked to the end of the mantelpiece, placed his smoked-out pipe on the edge and took an empty one from behind an ornament. Then he returned to his seat and sat for a long time with the empty pipe in his mouth.Alice drew a long breath that wheezed in her poor throat and covered her eyes with her hands, for she was dazzled with the vision that was surely turning real. To her, to his Helper, he had said that he was no use as a mere man. Surely the purport of that was clear.
  • 1Under the distillation system, even in case of azeotropic solvent compositions, this system which remove water vapor by the polyimide membrane will easily dehydrate.
  • 2In comparison with the distillation system, it significantly saves on use of steam.
  • 3Dehydration can be performed through merely supplying evaporated vapor to the membrane module and maintaining the differential pressure between the permeable side and the impermeable side.
  • 4Solvent purity of 99.9% or more can be achieved by carrying out dehydration with a polyimide membrane only.
  • 5The polyimide membrane has superior heat and solvent resistance. Therefore, the vapor permeation system reduces contamination of the membrane and thus extends its life.
THREE:I knew that already, he said.

The aromatic polyimide membrane is highly permeable to water vapor but less permeable to vapors of organic compounds such as alcohol etc.

THREE:She laughed.
  • 1 Recovery of the detergent solvent Recovery of the cleaning solvent such as electronic parts industry, precision instrument industry.
  • 2Solvent recovery and the refinement Solvent recovery and the refinement such as chemical industry, an industry of medical supplies, food industry, the fermentation industry.
THREE:"It would be ridiculous," he began, after several thoracic bifurcations, "for me to explain myself more fully to you. Unless you had a clock you couldn't possibly understand. But I hope I have made it clear that my world is a multiform world. It has a thousand[Pg 147] manifestations as compared to one of yours. It is a world of many dimensions, and every dimension is crowded with people and things. Only they don't get in each other's way, like you do, because there are always other dimensions at hand.""The abandonment of the custom began in the open ports, and is spreading through the country. It will spread in exactly the same ratio as Japan adopts other customs and ways of the rest of the world; and as fast as she takes on our Western civilization, just so fast will she drop such of her forms as are antagonistic to it."

Acetone, ethanol, methyl ethyl ketone, butanol, isopropyl alcohol, ethyl acetate, methyl isobutyl ketone, others (including hexane and toluene).