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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:All Peasmarsh went to the Fair. It was a recognised holiday. All farm workexcept the most barely necessarywas put aside, and the ploughman and dairymaid rollicked with their betters. The road across Boarzell was dark with them, coming from all quartersPlayden, Iden, Beckley, Northiam, BodiamOld Turk's Farm, Baron's Grange, Corkwood, Kitchenhoureven from Blackbrook and Ethnam on the Kentish border.The boy and girl were still silent. But in the consciousness each had of the other, kindled and spread a strange dear poignancy. They walked side by side through the dusk, now faintly cold. Dew began to tremble and shine on the grass, to pearl the brambles and glimmer on the twigs.
  • 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:His sons were now growing upAlbert was nearly eighteen, and Peter, though a year younger, looked a full-grown man, with his immense build and dark hairy skin. Pete was still the most satisfactory of Reuben's children, he had a huge and glad capacity for work, and took a real interest in Odiam's progress, though it was not his life, as it was his father's. It was strange, Reuben thought, that none of the other boys seemed to have a glimmer of enthusiasm. Though they had grown up under the shadow of Boarzell, and from their earliest childhood taken part in the struggle, they seemed still to think more about the ordinary things of young men's lives than the great victory before them. It was disappointing. Of course one expected it of girls, but Reuben's heart ached a little because the men children on whom he had set such hope and store cared[Pg 127] so little about what was life itself to him. It is true that Robert worked well, nearly as well as Pete, but that was only because he was of a docile, tractable nature. He did not share his father's dreamsBoarzell to him was only a piece of waste ground with some trees on it.

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

THREE:"Without hurt or harm!" repeated Holgrave: "she would not have said sooh! no, no, she would not have rejoiced to see me return thus;but your soul is not like hersif life is spared, it matters little to you that the spirit be crushed and broken: but Margaret, do not weep," he said, bending down to kiss the pale cheek, over which the tears his harsh language had called forth, were streaming fast. "Do not weep, I cannot bear your anguish now: I did not mean to speak unkindlyI love the gentleness of your spirityou are dearer to my heart, Margaret, than even the freedom that was of higher price to me than the breath I drew!""And I suppose Holgrave has sworn, too," sneered Calverley.
  • 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.
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Acetone, ethanol, methyl ethyl ketone, butanol, isopropyl alcohol, ethyl acetate, methyl isobutyl ketone, others (including hexane and toluene).