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TWO:[85]

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:
  • 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:I was of no party, she writes, but that of religion. I desired the reform of certain abuses, and I saw with joy the demolition of the Bastille, the abolition of lettres de cachet, and droits de chasse. That was all I wanted, my politics did not go farther than that. At the same time no one saw with more grief and horror than I, the excesses committed from the first moments of the taking of the Bastille.... The desire to let my pupils see everything led me on this occasion into imprudence, and caused me to spend some hours in Paris to see from the Jardin de Beaumarchais the people of Paris demolishing the Bastille. I also had a curiosity to see the Cordeliers Club.... I went there and I saw the orators, cobblers, and porters with their wives and mistresses, mounting the tribune and shouting against nobles, priests, and rich people.... I remarked a fishwoman.... This pretty spectacle to which she was said to have taken her pupils, was, of course, approved of by the Duke of Orlans, who made the Duc de Chartres a member of the Jacobin Club, by the wish of the Duc dOrlans, assuredly not by mine; but, however, it must be remembered that that society was not then what it afterward became, [416] although its sentiments were already very exaggerated. However, it was a pretext employed to estrange the Duchess of Orlans from me.Carle was a captain in the garde nationale, and lodged with his family in the Louvre when, on the 10th of August, 1792, the mob attacked the Tuileries. As the windows began to break and the shots to rattle round them it was evident that they were all in great danger. Carle caught up in his arms his youngest child, Horace, [33] then three [70] years old, and mounted his horse, his wife accompanying him carrying their little daughter.
  • 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:

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