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TWO:Mrs. Taylor came to the dining-room door and looked in. "Can I do anything?" 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:Landor stopped behind, looking at Cairness undecidedly for a moment longer. "It is well for you that I can believe her implicitly," he said. It had been a relapse to the Stone Age, but the rebound to the nineteenth century was as quick.Chapter 18
  • 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:The Indians and the cow-boys used the insulators to try their marksmanship upon, and occasionally—in much the same spirit that the college man takes gates from their hinges and pulls down street signs—the young bucks cut the wires and tied the ends with rubber bands. Also trees blown down by storms fell crashing across the line, and some scheme for making it a little less tempting and a little more secure was much needed. Landor had long nursed such an one. So a week later he and Felipa, with a detail of twenty men and a six-mule wagon, started across the Gila Valley to the White Mountains.

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

THREE:Official business called Brewster to the Agency next day. He stopped overnight, on the way, at a ranch whose owners depended more upon passing travellers than upon the bad soil and the thin cattle. And here fate threw in his way one whom he would have gone well out of that way to find.
  • 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).