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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:"Who married them?" asked Calverley, in a stifled voice.In the month of August, in the year thirteen hundred and seventy-four, this distinguished place, called Sudley Castle, presented an interesting scenethe then owner, in consequence of his father's death, holding his first court for receiving the homage and fealty of his vassals.
  • 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 next day Naomi left for Rye, where she stayed three weeks. She was mistaken, however, in thinking she had found a place of refuge, the hunt still went on. Reuben knew that his kiss had given him a definite position with regard to her, and Naomi knew that he knew. Twice he came over and visited her at Rye. He never attempted to kiss her again, and carefully avoided all talk of love. Indeed, her father was generally in the room. He was much taken with young Backfield, who was ready to talk shipping and harbour-work with him for hours."Stop one moment," returned Holgrave, and stepping into the cottage, he took a warm frieze cloak from a peg in the wall, and throwing it over his shoulders, was reaching for a kind of short-handled spear that lay on a shelf above the fire-place, when Margaret, clasping his left hand, looked up in his face, and asked with a pale and trembling lip, "Stephen, where are you going? Who is that man?"

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

THREE:"A bouncing boy, the wenches say. But I wish, Phil, you would come with meI don't much like to be trudging this dark road by myself."Chapter 9
  • 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:"Oh, clothes and things."

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