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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:Having met with this repulse, Kannegiesser returned to Berlin with the report. Frederick William was exasperated in the highest degree by such treatment from a brother-in-law whom he both hated and despised. He had at his command an army in as perfect condition, both in equipment and drill, as Europe had ever seen. Within a weeks time forty-four thousand troops, horse, foot, and artillery, were rendezvoused at Magdeburg. Fritz was there, looking quite soldierly on his proud charger, at the head of his regiment of the giant guard. Vigorously they were put upon the march. George II., who had already in his boyhood felt the weight of Frederick Williams arm, and who well knew his desperate energy when once roused, was terrified. He had no forces in Hanover which could stand for an hour in opposition to the army which the Prussian king was bringing against 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:But, alas! poor Goltz, just when ready to march, was taken with sudden, violent fever, the fruit probably of overwork; and in that sad flame blazed away his valiant existence in three or four days; gone forever, June 30, 1761, to the regret of Frederick and of many.167

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

THREE:CHAPTER XXXIV. THE PARTITION OF POLAND.
  • 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 French, advancing from the Rhine on the west, were sweeping all opposition before them. They had overrun Hanover, and compelled the Duke of Brunswick, brother of George II., to withdraw, with his Hanoverian troops, from the alliance with the King of Prussia. This was a terrible blow to Frederick. It left him entirely alone to encounter his swarming enemies.

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