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TWO:"Didn't you find out from him?" she asked.

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:The Indians, being wicked, ungrateful, suspicious characters, doubted the promises of the White-eyes. But it is only just to be charitable toward their ignorance. They were children of the wilderness and of the desert places, walking in darkness. Had the lights of the benefits of civilization ever shone in upon them, they would have realized that the government[Pg 226] of these United States, down to its very least official representative, never lies, never even evades.Brewster had taken an escort and disappeared down the vista of white sands and scrub growth, though it was Landor himself who should have gone. He swayed now in the saddle, his thick lips hung open, and he moved in a mental cloud as dense as the one of dust that poured round him.
  • 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:When the father returned to Tucson, he had sent her the history, and she had read and reread it. In a way she was something of a linguist, for she had picked up a good deal of Spanish from Mexicans about the post, chiefly from the nurse of the Campbell children."Did you, though?"

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

THREE:"You heard what Mrs. Cairness said this afternoon. She was very ill in school when she was a young girl, and still more so in Washington afterward." He shook his head. "No, Forbes, you may think you know something about the Apache, but you don't know him as I do, who have been with him for years. I've seen too much of the melting away of half and quarter breeds. They die without the shadow of an excuse, in civilization."
  • 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:"She's mighty nice looking, ain't she?"

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