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TWO:"Export business!" says Abibulla.

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:
  • 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:HYDERABADThe 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:By noon, under the torrid blaze which takes the colour out of everything, exhaustion overpowers the city. Vehicles are rare; a few foot-passengers try to find a narrow line of shade close to the houses, and silence weighs on everything, broken only by the buzzing of flies, the strident croak of birds of prey.From the summit we looked down over a panorama of the town, set out in square blocks sunk in the verdure of palms, bamboos, and banyans. At our feet was the cupola of the temple of Siva, all gold, and covered with bosses, the edges of the mouldings catching the sun. Besides this a number of coloured domes, painted in pale shades faded by the sunshine, descended the almost perpendicular incline down to the bazaar, where the throng was beginning to stir like white ants, of slow gait and deliberate gestures, their light-hued dhoutis flitting about the stalls for drink and fruit. Far away, beyond the bright green rice-fields, and against the horizon of intensely blue hills, the rocks stand outFrench rocks and Golden rockswhere the treasure of the conquered natives was distributed to English soldiers. It might almost be fancied that a glow of metal still shines on the smooth stone, a warm, yellow stone bathed in sunshine.
  • 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:Birds, green, red, black, and gold-colour, fluttered gaily among the palms, the bamboos as tall as pine trees, the baobabs and mango trees; butterflies with rigid tails and large wings beating in uncertain flight, floated over the bright verdure flecked with sunshine. Round one pagoda, towering over a wretched village that lay huddled in the shade of its consecrated walls, a proud procession of stone bulls stood out against the sky, visible at a great distance in clear outline through the heated, quivering air.

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