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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:
  • 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:Paulette? said Napoleon. But she will follow you. I approve of her doing so; the air of Paris does not agree with her, it is only fit for coquettes, a character unbecoming her. She must accompany you, that is understood.

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

THREE:I have always been persuaded, she says in one of her letters, that if the victims of that time of execrable memory had not had the noble pride to die with courage, the Terror would have ceased much sooner. Those whose intelligence is not developed have too little imagination to be touched by silent suffering, and it is much easier to arouse the compassion than the imagination of the populace.
  • 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:Barbier, writing in December, 1758, gives another sarcastic verse going about in society, which, as it was directed against the Kings all-powerful mistress, the Marquise de Pompadour, attracted general attention, irritated the King, and caused the author, who was discovered to be an officer of the guards, to be sentenced to a years imprisonment, after which to be banished to Malta, as he belonged to the order of St. John of Jerusalem.How it was possible, amidst the horrors and excesses going on throughout the land, to have such a delusion was incredible to Pauline; but the credulous infatuation of her husband was shared by Adrienne, who was delighted to get away from public life into the country, and proposed that they should stop with her sister on the way.

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