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TWO:"I said next week," explained the other, "in order to make my meaning clear. Actually, of course, I don't describe time in such arbitrary terms. But when one is in Rome, you know. What I mean to convey is that I am capable of going not only somewhere, but also somewhen."

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:I closed the door. It had no key, but there was a small catch to the knob and I turned it on while the men were looking into the adjacent rooms. When they reached ours Miss Harper was again at their front. Inside, the three of us silently noted our strategic advantages: we were in the darkest part of the room, the bed's covering was a dull red, Ferry had on his shirt of black silk, the white pillows were hidden at his back, Charlotte and I were darkly clad, the light from our west window would be in our assailants' faces as they entered, and they would be silhouetted against a similar light from the hall's front. We noiselessly cocked our weapons and Charlotte and I each sank to one knee. "The door is very thin," murmured Ferry, "we can fire before they enter; they will get, anyhow, our smoke, and if they fire as they rush in we can aim under their flash."

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

THREE:To tell all that was done and seen by our young friends during their stay in Kioto would be to tell a great deal. They had their time fully occupied from their arrival to their departure, and they regretted much the necessity of leaving when they did. At the Doctor's suggestion, they attempted a new system of relating their adventures to their friends at home, and were so well pleased at the result that they determined to try it again. The new scheme was the preparation of a letter in which both had equal shares, Frank undertaking to write one half of it and Fred the other. They succeeded so well that when they read over their production to Doctor Bronson before sending it away, he was unable to say which was Fred's portion and which was Frank's. We will reproduce the letter and leave our readers to judge how well they performed their self-imposed duty. At the Doctor's suggestion, each of the boys wrote as though speaking for himself, and consequently the letter had a good deal of "I" in it.
  • 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:The object that the Doctor picked up from the floor was an oblong-shaped piece of metal, almost as thin as paper, and slightly bluish in colour. Upon its surface, printed in red embossed letters, was the following matter:

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