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TWO:Huge vultures were prowling about the place.[Pg 222] At our approach they flapped a little away, and then perching on a heap of stones preened their feathers with clumsy, ungraceful movements.

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:A fortified wall encloses Lashkar, the residence of the Maharajah of Gwalior; the bridges, which form part of the enclosure crossing the river that flows through the estate, have thick bars filling up the arches.[Pg 94]
  • 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:On the landing-stage we read in large letters: "Beware of sunstroke," and lower down, "Avoid it by buying the best umbrellas and the best pith helmets of John Dash." The streets are the commonplace highways of a commercial town; the houses tall, with shops below. Dust and light alike were blinding; jinrickshaws were passing to and fro, drawn by almost naked coolies running as fast as horses.The heat to-day has suddenly become stifling; the low clouds veil the colourless sun, and the flowers, which yesterday were still lovely, are now[Pg 278] withered and pallid, and only give out their scent in the evening, when it is cool again.

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

THREE:Two old women had a quarrel, and all the neighbourhood came out to look on.
  • 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:The noise in the dock is maddening. The Customs, the police, the health-officers, all mob the voyager with undreamed-of formalities, such as a paper to be signed declaring that he has but one watch and one scarf-pin, and that their value is in proportion to the wearer's fortune. Then, again, the dispersal of the luggage, which must be fished out at another spot amid the yelling horde of coolies who rush at[Pg 4] the trunks and use the portmanteaus as missiles, till at last we are in the street.

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