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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:It is you who will embrace me! Open the door! Open the door!On the contrary, Madame he stammered.
  • 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:But I have no fortune, andThe 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.

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

THREE:Mme. de Genlis states that one evening while the States-General were sitting, the Duc dOrlans, who was in her salon, declared that they would be of no use and do nothing; not even suppress the lettres de cachet. Mme. de Genlis and the Duc de Lauzun were of a different opinion, and they bet each other fifty louis on the subject. The bet was put into writing and Mme. de Genlis showed it to more than fifty people of her acquaintance, all of whom declared a Revolution to be impossible. The Abb Cesutti, one of the free-thinking school, was editor of a paper called La feuille villageoise, intended for the people. He asked Mme. de Genlis to write for it, and she sent some papers called The Letters of Marie-Anne, in which she introduced doctrines and principles of religion. Soon after the Abb came and asked her in future only to speak of morality and never to mention religion. Knowing what that meant she declined to write any more for that paper.
  • 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:People are stupid, answered the prince, who have not the sense to do properly what they undertake to do.

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