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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:"Yes. I remember you now," said the Provost-Marshal savagely. "You're one o' them infernal nigger-thieves that brung disgrace on the regiment. You're one o' them that made it so notorious that decent men who had a respect for other people's property was glad to get out of it."
  • 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:"They return," Cadnan said, but without complete assurance. In this barrage of novelty, who could make any statement certain?

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

THREE:In the far-off days before the age of Confederation, war had, perhaps, been an affair of grinding, constant attack and defense. No one could say for sure: many records were gone, much had been destroyed. But now there was waiting, preparation, linked batteries of armaments and calculators for predictionand then the brief rush and flurry of battle, followed by the immense waiting once more."Our own sins are comin' back on us. Shorty," remarked Si. "This is a judgment on you for the way you've filled up recruits at every chance you got."
  • 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 last drink was a settler. He was then in a frame of mind for anythingto tear down a mountain, or lift a hill, or to fight anybody, with or without cause. He looked over at the boys struggling with the limber, and yelled, as he laid his coat, hat, canteen, and cartridge-box down on the stump upon which he had been sitting, and placed the field-glass upon them:

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