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TWO:The batteries behind them began throwing shells slowly and deliberately, as if testing their range, before beginning a general cannonade. All along the crest, to their right and to their left, could be seen regiments moving up and going into line of battle.

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:It seemed as if there was something of the perfume of her presence about it. Possibly she had carried it to the station and mailed it. He turned it over gently, studied every detail, and fixed his eyes upon it, as if he would make them pierce the thick, strong paper and devour the contents. Then it occurred to him that the better and quicker way to get at the inside would be to deliver the letters to Si. So he hunted up his partner, whom he found about to take his squad out for a turn at wagon guarding.He stopped and considered the morals of the affair a little further, and somehow the idea of taking the fowls by stealth did not seem so abhorrent as at first. Then, everything was overslaughed by the thought of going into camp with the precious birds, of cleaning one and carefully stewing it, making a delicate, fragrant broth, the very smell of which would revive Si, and every spoonful bring nourishment and strength.
  • 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 aromatic polyimide membrane is highly permeable to water vapor but less permeable to vapors of organic compounds such as alcohol etc.

THREE:
  • 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 silence of the woods and the mountains as night drew on became more oppressive than the crashing sounds, the feverish movements, and the strained expectancy of the day had been.

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