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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 next day M. Hartoff called at the residence of M. Kannegiesser, and informed him that the ministers, understanding that he designed to ask an audience to-morrow to remind them64 of the answer which he demanded, wished to say that such applications were not customary among sovereign princes; that they dared not treat farther in that affair with him; that, as soon as they received instructions from his Britannic majesty, they would communicate to him the result.
  • 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:Much to Fredericks chagrin, he soon learned that a body of three hundred foot and three hundred horse, cautiously approaching through by-paths in the mountains, had thrown itself into Neisse, to strengthen the garrison there. This was on the 5th of March. But six days before a still more alarming event had occurred. On the 27th of February, Frederick, with a small escort, not dreaming of danger, set out to visit two small posts in the vicinity of Neisse. He stopped to dine with a few of his officers in the little village of Wartha, while the principal part of the detachment which accompanied him continued its movement to Baumgarten.Thus circumstanced, General Neipperg gave the order to retreat. At the double quick, the Austrians retired back through the street of Mollwitz, hurried across the River Laugwitz by a bridge, and, turning short to the south, continued their retreat toward Grottkau. They left behind them nine of their own guns, and eight of those which they had captured from the Prussians. The Prussians, exhausted by the long battle, their cavalry mostly dispersed and darkness already enveloping them, did not attempt any vigorous pursuit. They bivouacked on the grounds, or quartered themselves in the villages from which the Austrians had fled.

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

THREE:For a long time my heart had been swelling. I could not restrain my tears at hearing all these indignities. Why do you cry? said he. Ah! ah! I see that you are in low spirits. We must dissipate that dark humor. The music waits us. I will drive that fit out of you by an air or two on the flute. He gave me his hand and led me into the other room. I sat down to the harpsichord, which I inundated with my tears.
  • 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: Sont pour jamais perdus dans les charrains.

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