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TWO:"It would be well, my good friend, if all men observed their vows as religiously as you do."

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:Chapter 20Then began a regular siege. Stones showered upon the farmhouse roof, the shiver of broken glass tinkled through the dull roar of the attackers, groans and screams answered the bursting bang of the shot-gun. Men began to seize faggots from the wood-pile, and run with them towards the house. Then some tore up a haystack, but the wind caught the hay and blew it[Pg 12] everywhere, flinging swathes and streamers of it into the rioters' faces, giving them sudden armfuls of it, making their noses and eyes smart with the dust and litter.
  • 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:"Can't you let it alone, Reuben?wewe've been so happy these last months not worrying about it. Must we ever start again?"Byles stood looking, with a countenance expressive of stupified horror, and yet, as if doubting that the livid, distorted, suffering creature could be the fine blooming boy he had so lately seen. At length, aroused by the increasing energy of Mary, he turned silently round and left the room; as he closed the door, the agonized spirit of the little Roland passed away.

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

THREE:
  • 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:"You're a queer lad, Reubenand more masterful than your poor f?ather wur."

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