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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:In an agony of terror Pauline sprang out of the carriage and implored him to tell her the worst, for she could bear it.However they were none of them in the same danger that she would have been had she remained at Paris. None of them were at all conspicuous, and as far as any one could be said to be tolerably safe in France under the new reign of Liberty, Equality, and Fraternity, they might be supposed to be so.
  • 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:Mme. de Saint-Aubin had found an old friend from her convent, Mme. de Cirrac, who introduced her to her sister, the Duchesse dUzs, and others, to whose houses they were constantly invited to supper, but the young girl, with more perception than her mother, began to perceive, in spite of all the admiration lavished upon her, that it was her singing and playing the harp that procured her all these invitations, and that she could not afford to dress like those with whom she now associated, and this spoilt her pleasure in going out. While her mother was in this way striving to lead a life they could not afford, her father, whose affairs grew more and more unprosperous, went to St. Domingo on business.Because she will die.

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

THREE:
  • 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:These evening parties were usually delightful; those of the Princesse de Rohan-Rochefort were especially so. The intimate friends of the Princess, the Comtesse de Brionne, Princesse de Lorraine, Duc de Choiseul, Duc de Lauzun, Cardinal de Rohan, and M. de Rulhires, a distinguished literary [32] man, were always present, and other pleasant and interesting people were to be met there.But the most extraordinary and absurd person in the family was the Marchale de Noailles, mother of the Duc dAyen, whose eccentricity was such that she might well have been supposed to be mad. It was, however, only upon certain points that her delusions were so singularotherwise she seems to have been only an eccentric person, whose ideas of rank and position amounted to a mania.

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