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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:"Hot air," interrupted Allingham, reaching for his tobacco pouch, "that's all this is."
  • 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:"If you saw him," said Arthur, emphatically, "you'd have to believe. It's just that, and nothing else. He's like one of those mechanical toys come to life. And it's so funny. You'd never guess."Alice could do better than give him little bits, thanks to her excellent memory and her practice this afternoon, and in addition to several Songs Without Words, gave him a couple of pretty solid slow movements out of Beethovens Sonatas. It was not altogether her fault that she went on so long, for once when she attempted to get up, he said quite aloud so that everybody could hear, You naughty girl, sit down and play that other piece at once. But when eventually the concert came to a close, he pressed her hand for quite a considerable time behind the shelter of the piano, and said almost in a whisper, Oh, such rest, such refreshment! Then instantly he became not so much the brisk man of the world as the brisk{61} boy of the world again, and playfully insisted on performing that remarkable duet called Chopsticks with her, and made her promise that if Mr Keeling lost all his money, and she had to work for her living, she would give him lessons on the piano at seven-and-sixpence an hour. There was a little chaffering over this, for as a poor priest he said that he ought not to give more than five shillings an hour, while Mrs Keeling, joining in the pleasantries, urged Alice to charge ten. The only possible term to the argument seemed to be to split the difference and call it seven-and-sixpence, cash prepaid.... Mr Keeling was appealed to and thought that fair. But he thought it remarkably foolish also.

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

THREE:But in this attempt he was unexpectedly thwarted. The Clockwork man recovered himself; he ran straight back to the wicket and then stopped dead. The umpire was in the act of replacing the bails, for the wicket had been put down, and, fast as this eccentric cricketer had run in the first place, he had not been quick enough to reach the crease in time. By all the rules of the game, and beyond the shadow of doubt, he had been "run out." He now regarded the stumps meditatively, with[Pg 36] a finger jerked swiftly against his nose, as though recognising a former state of consciousness. And then, with a swift movement, he took up his position in readiness to receive the ball.
  • 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:"Yes, oh, yes!--the best I can. I'd like to sit half up--and hold my sword--if there's--no objection. I've loved it so! It would almost be like holding--the hand that's far away. Of course, it isn't really necessary, but--it would be more like--dying--for my country."

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