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TWO:CHAPTER X

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:Well, who am I, then?
  • 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:As Mme. Le Brun had not many servants, he had found nobody to announce him, but entered without the least shyness, and walking up to M. de Rivarol, said that he wanted to speak to him about a pamphlet of his, now being printed at the establishment in which he was employed. There was a passage in it which they could not read or did not understand, and M. de Rivarols servant having told him where his master was to be found, he had come after him.

The aromatic polyimide membrane is highly permeable to water vapor but less permeable to vapors of organic compounds such as alcohol etc.

THREE:The enthusiasm of Flicit for the court of Louis XIV. found worthier objects of admiration than the Duc de Richelieu, in the excellent Marchal de Balincourt, and his friends, the Marchal de Biron and the Marquis de Carrillac. This last was ninety-one years old, Biron was eighty-six or seven, and Balincourt not more than seventy. He used to speak with envy of Biron, saying: He was thirty years old at the death of the late king. When hearing them talk together she felt herself transported into the days of that magnificent reign.One day at the end of May when she and her daughter were walking in the summer gardens, they noticed that all the shrubs were covered only with buds. Taking a long walk round the gardens and returning to the same place, they found all the buds had burst into leaf.
  • 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:Catalani, then young and beautiful, was one of her new friends, and used to sing at her parties. She painted her portrait, and kept it as a pendant to the one she had done of Grassini in London.CHAPTER IV

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