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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:The impetuous Frederick made no delay at Prague. The day after the capture, leaving five thousand men, under General Einsiedel, to garrison the city, he put his troops in motion, ascending the right bank of the Moldau. It would seem that he was about to march boldly upon Vienna. Wagons of meal, drawn by oxen, followed the army. The heavy artillery was left behind. The troops were forced along as rapidly as possible. They advanced in two columns. One was led by Frederick, and the other by young Leopold. The country through which they passed was dreary, desolate, barren in the extremea wild waste of precipitous rocks, and bogs, and tangled forest. The roads were wretched. No forage could be obtained. The starved oxen were continually dropping, exhausted, by the way; the path of the army was marked by their carcasses.Poor Linsenbarth had a feather bed, a small chest of clothes, and a bag of books. He went to a humble inn, called the White Swan, utterly penniless. The landlord, seeing that he could levy upon his luggage in case of need, gave him food and a small room in the garret to sleep in. Here he remained in a state verging upon despair for eight weeks. Some of the simple neighbors advised him to go directly to the king, as every poor man could do at certain hours in the day. He wrote a brief statement of the facts, and started on foot for Potsdam. We give the result in the words of Linsenbarth:
  • 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: Nürnberg, July 3, 1734.

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

THREE:Regardless himself of comfort, insensible to fatigue, dead to affection, he created perhaps the most potent military machine earth has ever known. Prussia was an armed camp. The king prized his soldiers as a miser prizes his gold coin, and was as unwilling to expose them to any danger as the miser is to hazard his treasures. War would thin his regiments, soil his uniforms, destroy his materiel. He hated war. But his army caused Prussia to be respected. If needful, he could throw one hundred thousand of the best drilled and best furnished troops in Europe, like a thunderbolt, upon any point. Unprincipled monarchs would think twice before they would encroach upon a man thus armed.
  • 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: Results of the Battle of Rossbach.The Attack upon Breslau.Extraordinary Address of the King to his Troops.Confidence of the Prussians in their Commander.Magnificent Array of the Austrians at Leuthen.Tactics of Frederick.The Battle Hymn.The Battle and the Victory.Scenes after the Battle.Recapture of Breslau by Frederick.

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