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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:The journeys of the court to the different country [394] palaces, Versailles, Compigne, Fontainebleau, Marly, &c., were affairs of enormous expense, and ceremony so preposterous, that, for instance, there was one sort of court dress for Versailles, and another, equally magnificent and uncomfortable, for Marly. On the 1st of January Louis XV. always arranged with care and consideration the journeys for the year to the different palaces, of which there were a great number. Mme. Campan [117] in her Mmoires, says that Marly, even more than Versailles, transported one vividly to the reign of Louis XIV.; its palaces and gardens were like a magnificent scene in an opera; fountains, pavilions, statues, marble basins, ponds and canals, thickets of shrubs, groups of tall trees, trellised walks and arbours, amongst which the ladies and gentlemen of the royal households and court walked about in full dress; plumes, paniers, jewels, and trains making any enjoyment of the country out of the question, but impressing with awe and admiration the crowds who were admitted to the gardens, and to the suppers and gambling at night. Every trace of this palace and gardens disappeared in the Revolution.
  • 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:It appeared after a time that the post in the household of the Comtesse de Provence was not attainable, and in the first disappointment of this refusal, Mme. de Montesson told her niece that she had only to ask and she would receive an appointment at the Palais Royal.Emigrate? I never thought of such a thing. We were going to Spain to see my father, who is there.
  • 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:The news spread through the prison and caused general grief. Some of the prisoners got out of the way because they could not bear to see them pass, but most stood in a double row through which they walked. Amidst the murmurs of respect and sorrow a voice cried out

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