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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:Death of the Duc dOrlansM. de GenlisSilleryComing of the RevolutionThe BastilleAnger of the Duchesse dOrlansDissensions.
  • 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 replied to the King that this would be all the easier to me as I had no greater wish than to be on good terms with my brother and sister-in-law; adding: I know the respect which I owe your Majesty, and that which the heir to the throne has a right to expect from me; in which I hope never to be accused of having failed.

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

THREE:Again the King let slip a golden opportunity, for he could have left that night in perfect safety with a strong escort, and placed himself and the royal [215] family in safety, if only he had taken advantage of the favourable disposition of the troops, but the chance was lost, the demonstration infuriated and alarmed the Revolutionists, who succeeded in corrupting part of the regiment de Flandre, made La Fayette head of the National Guards, and carried the King and royal family to Paris.Tallien had no wish to separate from Trzia. He cared more for her than she for him, but he saw that her love was gone; he had failed with her as with everything else. He submitted, and begged to be allowed to accompany Napoleon to Egypt, why, no one could understand, unless he feared he might share the fate of Billaud-Varennes, Collot dHerbois, Barre, and other of his regicide friends, meditating at Cayenne upon the result of the Revolution. [108]
  • 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:Like all the other emigres Mme. de Genlis was horrified at the strange manners and customs of the new society, largely composed of vulgar, uneducated [458] persons, often enormously rich, exceedingly pretentious, and with no idea how to conduct themselves.

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