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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:I understood the speech perfectly well, but my awe was too great to allow me to say, Your majesty will have the grace to allow me something. But as I was so simple, and asked for nothing, he did not offer any thing. And so he turned away. But he had gone scarcely six or eight steps when he looked around and gave me a sign to walk by his side.
  • 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:293 Of the political morality of this game of fast-and-loose what have we to say, except that the dice on both sides seem to be loaded; that logic might be chopped upon it forever; that a candid mind will settle what degree of wisdom (which is always essential veracity) and what of folly (which is always falsity) there was in Frederick and the others; whether, or to what degree, there was a better course open to Frederick in the circumstances; and, in fine, it will have to be granted that you can not work in pitch and keep hands evidently clean. Frederick has got into the enchanted wilderness populous with devils and their work, alas! It will be long before he get out of it again; his life waning toward night before he get victoriously out, and bequeath his conquest to luckier successors!Frederick, having obtained all that, for the present, he could hope to obtain, deemed it for his interest to attempt to promote the peace of Europe. His realms needed consolidating, his army recruiting, his treasury replenishing. But he found it much easier to stir up the elements of strife than to allay them.
  • 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: I should think myself richer in the possession of your works than in that of all the transient goods of fortune.

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