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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:Vastly superior as was the Russian army in numbers, General Soltikof did not venture to advance to attack his terrible foe. He had selected a very strong position on a range of eminences about one hundred feet high, running for several miles in an easterly direction from the river. Upon this ridge, which was called the Heights of Kunersdorf, the Russian general had intrenched himself with the utmost care. The surrounding country was full of bogs, and sluggish streams, and a scraggy growth of tough and thorny bushes, almost impenetrable.
  • 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.
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The aromatic polyimide membrane is highly permeable to water vapor but less permeable to vapors of organic compounds such as alcohol etc.

THREE:Two Silesian barons called upon him, and presented a protest from the authorities they represented against his meditated invasion, the design of which was now manifest to all. The king received them very courteously, tossed the protest to a secretary223 to file away or to cast into the waste-paper basket, and invited the two gentlemen to dine with him.
  • 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: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.

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