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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:And did she see you? asked Alice, with a sort of idiotic eagerness. All the time there was ringing in her head, like a peal of baritone bells through{221} the quackings of the telephone, the lovely words, My dear little Helper! Bless you, my dear little Helper.
  • 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:"Oh, they don't hurt us. We don't feel any pain or annoyance, only a dim sort of revolt, and even that can be adjusted. You see, the makers can ring the changes endlessly with us, and there isn't any kind of being, from a great philosopher to a character out of a book, that we can't be turned into by twisting a hand. It's all very wonderful, you know."

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

THREE:I fancy Lord Inverbroom does, he replied, secretly praising himself for his remarkable ingenuity.Late that evening the Doctor returned from a confinement case, which had taken him to one of the outlying villages near Great Wymering. The engine was grinding and straining as the car slowly ascended a steep incline that led into the town; and the Doctor leaned forward in the seat, both hands gripping the wheel, and his eyes peering through the wind-screen at the stretch of well-lit road ahead of him.
  • 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 wouldn't believe some of the things we can do. The clock is a most wonderful invention! And the economy. Some of the hands, you see, can be used for quite different purposes. Twist them so many times and you have a politician; twist a little more and you have a financier. Press one stop slightly and we talk about the divinity of man; press harder and there will issue from us nothing but blasphemy. Tighten a screw and we are altruists; loosen it and we are beasts. You see, generations ago it was known exactly the best and worst that man could be; and the makers like to amuse themselves by going over it again. There isn't any best or worst with them.""I suppose that's so," laughed the officer. "I'll tell you how it was. My guard were just about to hang me for saying I thought we had a right to make soldiers of the darkies, when your friend came galloping along, saw the thing, and rushed in and cut the halter with his sword. And when they demanded to know who and what he was, he told them Durand, and that they'd hear it again, for he should report them."

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