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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:Before sunrise Sunday morning the Prussians had seized upon many important posts. About seven oclock a flag of truce, or rather a trumpeter, approached one of the gates, demanding admittance to communicate to the chief magistrate of the city the intentions and requisitions of the Prussian king. After some delay, two colonels were admitted. They demanded the entire surrender of the city, and that the authority of Frederick, the King of Prussia, should be recognized instead of that of Maria Theresa, Queen of Austria. All their local laws and customs were to be respected, and they were to be protected in all their rights and privileges. Their own garrison should guard the city. No Prussian soldier should enter the gates with other than side-arms. The king himself, in taking possession of the city, should be accompanied by a body-guard of but thirty men. The city council was assembled to consider this summons, and thirty hours were spent in anxious deliberation.
  • 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.
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The aromatic polyimide membrane is highly permeable to water vapor but less permeable to vapors of organic compounds such as alcohol etc.

THREE:A court-martial was convened to pronounce sentence upon the105 Crown Prince and his confederates. The court was appointed by the king, and consisted of three major generals, three colonels, three lieutenant colonels, three majors, three captains, and three belonging to the civil courts, called auditors. The court, thus composed of eighteen members, met on the 20th of October, 1730, in the little town of Copenick, a few miles from Berlin. Grumkow, well aware that these proceedings would attract the attention of every court in Europe, had persuaded the king to submit to the formality of a court-martial.The princess has an open countenance; her eyebrows are neat and regular; her nose is small and angular, but very elegantly defined; and her coral lips and well-turned neck are equally admirable. Goodness is strongly marked in her countenance; and we may say, from her whole figure, that the Graces have exerted themselves in forming a great princess. Her highness talks but little, especially at table, but all she says is sterling sense. She appears to have an uncommon genius, which she ornaments by the continual study of the best French authors.
  • 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:You speak of my personal safety. You ought to know, as I do, that it is not necessary for me to live. But while I do live I must fight for my country, and save it if it be possible. In many little things I have had luck; I think of taking for my motto, Maximus in minimis, et minimus in maximis.154

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