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TWO:She let me cut the flowers. "You know who's here?" she asked.

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:She locked up those treasures, and going to the window drew aside the curtain and looked out. The autumnal fall of the leaf from the trees in the garden had brought into view houses in the town hidden before; among these was St Thomass Vicarage, that stood slightly apart from the others and was easily recognisable. With the aid of an opera glass she could distinguish the windows, and{112} saw that a light was burning behind the blinds of his study. He had come in, then, and for a full minute she contemplated the luminous oblong. Later, she had sometimes seen that a window exactly above that was lit. She liked seeing that, for it meant that he was going to bed, and would soon be asleep, for he had mentioned that he went to sleep the moment he got into bed. Once she had watched till that light went out also.Yes, and me the Lady Mayoress, she said. Why, Im ever so nervous even now in the thinking of all the grand parties I shall have to give. And the hospital will be finished next year too, and what a to-do we shall have over that. And what do you say now, Mamma, to having your cup of coffee in my boudoir quietly with Alice and me, leaving the gentlemen to have a cigarette.
  • 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 End

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

THREE:"But that's not very kind of them," suggested Arthur."I know what that is," said Fred, who came along at the moment Frank expressed his wonder to Doctor Bronson.
  • 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:"What time in the evening must we go," said Fred, "so as to be there in season for the beginning of the performance?"

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