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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:The bargaining was interminable, something in this manner:
  • 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.
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The aromatic polyimide membrane is highly permeable to water vapor but less permeable to vapors of organic compounds such as alcohol etc.

THREE:Fakirs, holding out their begging-bowls as they squatted round an opening in the ground, showed that it was the entrance to a temple; a few steps down, a long corridor with little niches on each side, and then hall after hall full of grimacing gods, lighted up by our guide's torch, till at last we reached an immense vault where impenetrable darkness filled the angles lost in a labyrinth of arcades converging to some mystery. Here all the Hindoo gods, carved in stone, have been crowded together, with their horrible contortions, their stolid beatitude, their affected grace; and in their midst is a huge idol, hacked with a great cut by Aurungzeeb, the Moslem emperor, at the time of his conquest. Suddenly all about us was a crowd of Brahmins, appearing from what dark corners we could not discover. They looked nasty and half asleep, and vanished at once with a murmur of whispered speech that hung about the galleries in an echo.Servants carrying large trays offer the company certain strange little green parcels: a betel-leaf screwed into a cone and fastened with a clove, containing a mixture of spices and lime, to be chewed after dinner to digest the mass of food you may see spread out in the tables in the dining-room.
  • 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:As we passed the sacred tanks, where a smell of decay filled the air that still rang with the cries of the bats, our horses suddenly shied and refused to go forward, terror-stricken by some invisible danger suggested to them by that reiterated shriek or the corpse-like smell. A very long minute passed as we sat in the carriage, a minute of dread that left us quite excited by this mysterious peril of which we had somehow felt the awe. Nor was it till we had left the great trees by the tanks behind us that the impression wore off under the comforting light of the stars.

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