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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 she lay, one day, with her face, too white and sharp, looking out from the tangle of hair upon the pillow, he asked her almost abruptly if she had rather go back to the West. He could not bring himself to ask if she were longing to be near Cairness. He shrank too much from her frank, unhesitating assent.
  • 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:The one in the airplane, Dick argued, was the oneand the one on the yacht was a substitute.
  • 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:At the very time that these measures were occupying the British Parliament, the Bostonians were driving affairs to a crisis. In nearly all the seaports committees were in active operation for examining all cargoes of ships, and reporting the result. These committees also kept a keen observation on each other, and visited publicly any that appeared lukewarm. Boston, as usual, distinguished itself most prominently in this business. Regular meetings were held in Faneuil Hall, and votes passed denouncing all who dared to import the prohibited goods. Lieutenant-Governor Hutchinson exerted himself to form an[201] association amongst the traders in opposition to these anti-importers, but he tried in vain. They insisted that the merchants who had imported goods in their shops and warehouses should be compelled to ship them back to those who had sent them. One merchant, more stubborn than the rest, was immediately waited on by a deputation, headed by an axeman and a carpenter, as if prepared to behead and bury him; and he was told that a thousand men awaited his decision, and they could not be answerable for his safety if he refused to comply.

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