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TWO:"I think you boys are about even now," said the Doctor, "and may stop[Pg 39] for the present." They agreed to call it quits, and resumed their study of the map.

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:So there came a silence, and then a gay laugh as three of us at once asked if he had ever heard of Lieutenant Durand. "Durand!" he cried, and looked squarely around at me. I lifted the cocked revolver, but he kept his fine eyes on mine and I rubbed my ear with my wrist. "What?" he said, "an elegant, Creole-seeming young fellow, very handsome? Why, that fellow saved my life this very afternoon.""Oh, hang the uniform!"
  • 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:Their journey brought them to Hakone, which has long been a favorite summer resort of the Japanese, and of late years is much patronized by foreigners. Those who can afford the time go there from Yokohama, Tokio, and other open ports of Japan; and during July and August there is quite a collection of English and Americans, and of other foreign nationalities. The missionaries, who have been worn down and broken in health by their exhaustive labors in the seaports during the winter, find relief and recuperation at Hakone as the summer comes on. There they gather new strength for their toils by breathing the pure air of the mountains and climbing the rugged paths, and they have abundant opportunities for doing good among the natives that reside there.

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

THREE: "We are outside of treaty limits, and so we were obliged to have passports to come here. Foreigners may go freely within twenty-five miles of any of the treaty ports without special permission, but Kioto is just beyond the limit, as it is thirty miles from Osaka, and therefore the Japanese permit is needed. We had ours from the consul at Kobe, and had no trouble at all on coming here. A Japanese official called for them soon after we came to the hotel, and he bowed low as he received them. Then he spread the documents on the floor, and as he did so he fell on his hands and knees so as to bring his nose within six inches of the papers, and curve his back into the shape of an arch. He read the passports and copied our names into his note-book; or, at least, I suppose he did so, though I can't say positively. We can stay the time named in the permit without further interference; but if we stopped too long, we should probably be told some morning that a gentleman at Kobe was anxious to see us, and we had better start for there by the first train. The Japanese are so polite that they will never say a rude thing if they can help it, and they will even tell a plump falsehood rather than be uncivil. But the same thing has occurred in America, and so the Japs are not much worse than others, after all.There came a slight sound from the drawing-room next door which would have been inaudible to any but expectant ears, and Alice bent over her work with more intense industry. Then the door opened very softly, and Mr Silverdale looked in. He was dressed in a black cassock and had a long wooden shepherds crook in his hand. He saw Alice seated in the window, he saw Mrs Keeling with her mouth slightly open and her eyes completely shut in a corner of the sofa, and rose to his happiest level.
  • 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:

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