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TWO:"Have I ever lied to you?" Crook asked them.It was a bitterly cold January morning. There had been a rain in the night, and the clouds yet hung gray over Mt. Graham and the black gap. The wet wind went howling over the valley, so that the little flag at the top of the staff snapped and whipped as though it would be torn from the halyards. Sunday inspection and guard mounting had been chilling ceremonies, performed in overcoats that were hardly more blue than the men's faces. Having finished them, Brewster hurried across the parade to Captain Campbell's quarters.

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:But had they come? he insisted.
  • 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 am not wasting any sympathy on the Apaches, nor on the Indians as a whole. They have got to perish. It is in the law of advancement that they should. But where is the use in making the process painful? Leave them alone, and they'll die out. It isn't three hundred years since one of the biggest continents of the globe was peopled with them, and now there is the merest handful left, less as a result of war and slaughter than of natural causes. Nature would see to it that they died, if we didn't.""I used to know Mrs. Cairness in Washington," Forbes went on, undisturbed; "she has probably told you so."

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

THREE:[Pg 94]
  • 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:"I dunno. I didn't.""He is mistaken, sir."

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