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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:When he returned at the end of a couple of hours she was all humility, and she had moreover done something that was rare for her: made capital of her beauty, putting on her most becoming white gown, and piling her hair loosely on the top of her head, with a cap of lace and a ribbon atop of it. Landor liked the little morning caps, probably because they were a sort of badge of civilization, but they were incongruous for all that, and took from the character of her head. His anger was well in leash, and he gave her the mail which had just come in by the stage, quite as though nothing had occurred. "And now," he commenced, when he had glanced over the Eastern papers, "I have seen the C. O.; he wants the line between here and Apache fixed. He will give me the detail if you care to go." He plainly meant to make no further reference to her confession, but she would have been more than woman if she had known when to let a matter drop.
  • 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:The year 1743 opened with a mighty struggle on the subject of gin. In 1736, as we have seen, the awful increase of drunkenness, which was attributed to the cheapness of gin, induced a majority of the House of Commons to pass an Act levying twenty shillings a gallon duty upon the liquor, and charging every vendor of it fifty pounds per annum for a licence. Walpole at the time declared that such an attempt to place gin beyond the reach of the poor consumers would fail; that it would fail equally as a source of revenue, for it would lead to wholesale smuggling and every possible evasion of the law. The event had proved Walpole only too correct in his prognostications. So far from checking the use of gin, the Act had stimulated it enormously. The licences, so preposterously high, were wholly neglected; no duty was paid, yet the destructive liquid was sold at every street corner. Ministers now saw that, by attempting too much, every thing in this case had been lost. They were sacrificing the revenues only to sacrifice the well-being of the people. They determined, therefore, to reduce the licences from fifty pounds to one pound per annum, and at the same time to retain a moderate duty on the liquor. By this means the fatal compound would remain much at the same price, but the vendors would be induced to take out licences, and the revenues would be greatly improved, whilst the whole sale of the article would be more under the restraints of law and police. A Bill was framed on these principles, and passed rapidly through the Commons; but in the Lords it encountered a determined opposition. It was, however, carried entire, and, says Smollett, "we cannot help averring that it has not been attended with those dismal consequences which the Lords in the Opposition foretold."
  • 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:And you chew gum! snapped Sandy, unwilling to be left out of the suddenly developing third degree he had begun. Jeff made a further inspection, touched a bit of the dried gum curiously, stepped down and stood with a thoughtful face for a moment.

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