ここから本文です
TWO:CHAPTER IX

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:The Marquis de Continges, a dissipated rou of the court of Louis XV., an encyclop?dist and friend of Voltaire, finding in the reign of Louis XVI. that he was getting old, thought he would marry. He [196] was noble, rich, and a good parti; but after making many inquiries he could not hear of any one he especially fancied. One evening he appeared at a great party given by the Princesse de Lamballe, at which every one of importance was present, dressed in black velvet, with lace ruffles, a sword by his side, and in his hand an embroidered hat full of mysterious tickets.Nobody could feel sure when they got up in the morning that they would go safely to bed at night; the slightest offence given to the Emperor meant imprisonment or Siberia, and his orders were so preposterous that it was difficult not to offend him.
  • 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:The Regent Orlans was not, like the Princes of [8] Cond, Conti, Charolois, and others of the blood royal, cruel, haughty, or vindictive; on the contrary, he was good-natured, easy, and indulgent; but he was dissipated, extravagant, and licentious to such a degree that he himself, the court, and his family were the scandal of Europe. The same frenzied pursuit of enjoyment, the same lavish, sensual, reckless, luxurious life, characterised the whole of the reign of Louis XV.[303]

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

THREE:Another of her introductions was to Prince von Kaunitz, the great Minister of Maria Theresa, whose power and influence had been such that he was called le cocher de lEurope; [41] and whose disinterested single-minded patriotism was shown in his answer, when, having proposed a certain field-marshal as president of the council of war, the Empress remarked
  • 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:Mme. Adla?de, tonne dun tel propos rpond sur le mme air:For no one knew better than he did the histories and genealogies of his noblesse, and that he did not hesitate to explain them even when to his own disadvantage, the following anecdote shows:

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