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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:Opposite a large tank, where a tall column rises from the water in memory of the victims of the Mutiny, and where a party of the votaries of Siva are performing their pious ablutions, a building stands in the Hindoo-Jesuit style of architecture. It is heavy, with white carvings above its pink paint, and with columns supporting turrets crowned with large lion-faces, the masks only, in the Indian manner, daylight showing through the jaws and eyes, and the profiles absurd, shapeless, and unmeaning. This is the college of La Martinire.[Pg 25]
  • 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:In the sacred tank, where Vishnu bathes when[Pg 165] he comes on earth, an old woman was standing pouring the stagnant green water over her body, while others of the faithful, seated on the steps, were piously drinking the stuff from a coco-nut that they handed round. In one corner of this pool was an exquisite bower of floating wreathsyellow, white, and violeta splash of bright colour on the squalid water.In the close-shut room the air, loaded with scent and smoke, was quite unbreathable; musicians playing behind a partition added to the irritating effect of all this perfume and noise.

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

THREE:When the express had arrived that morning from Bombay, eight bodies were found of victims to the plague who had died on the way. They were laid on the platform and covered with a white sheet; and in the station there was a perfect panic, a surge of terror which spread to the town, and broke up the market. The shops were all shut, and the people rushed to their knees before the idols in the temples.
  • 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:When a Sikh is beaten and surrenders he takes off his turban and lays it at the conqueror's feet, to convey that with the turban he also offers his head.

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