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TWO:LVI H?TEL DES INVALIDES"I am Charlotte Oliver."

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:
  • 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:Mrs Keeling tried to recollect something about quarrels she had been party to. There was the case of the two little tiffs she had had lately with her husband, once when he had distinctly sworn at her, once when he had asked her so roughly what she meant with regard to her little joke about Norah and the catalogue. One of those, so it suddenly seemed to her now, had led to a pearl-pendant, which seemed to illustrate Alices theory of quarrels leading to warmer attachments. She had not connected the two before. She wondered whether Mrs Fyson would say that that was very clever too.... She determined to think it over when she had leisure. At present she was too curious about Alice to attend to it. But she would think it over at Brighton.{223}

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

THREE:"They're all about the house, tending the wounded; Mrs. Sessions is with the Squire, of course,--dear, brave old gentleman! we thought he was killed, but Charlotte found the ball had glanced."
  • 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 has never been my fortune," the Doctor continued, "to be farther in a typhoon at sea than the outer edge, but that was quite as much as I wanted. One time on land I saw and felt one of these tempests; it drove ships from their moorings, swamped hundreds of boats, unroofed many houses, tore trees up by the roots, stripped others of their branches, threw down walls and fences, flooded the land, and caused a vast amount of havoc everywhere. Hundreds of people were drowned by the floods, and the traces of the storm will last for many years. The city that has suffered most by these storms is Calcutta. On two occasions the centre of a typhoon has passed over the harbor or within a few miles of it, and the whole shipping of the port was driven from its moorings and the greater part completely or partially wrecked."

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