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TWO:Shops of the same trade are found in rows; carpenters joining their blocks, and workmen carving ornaments with very simple toolsclumsy toolswhich they use with little, timid, persistent taps. Further on, coppersmiths are hammering the little pots which are to be seen in everybody's hands; under the shade of an awning stretched over the tiny booth, the finished vessels, piled up to the roof, shed a glory over the half-naked toilers who bend over their anvils, perpetually making jars of a traditional pattern, used for ablutions. There are two men at work in each shop, three at most, and sometimes an old man who sits smoking with half-closed eyes.

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 view spread to the horizon of mauve-pink sky, very faintly streaked with green. We could see the white mass of Secunderabad, a town of English barracks, at the foot of chaotic red-brown rocks, looking like the heaped-up ruins of some city of the Titans; and among trees shrouded in blue smoke, Hyderabad, conspicuous for its two mosquesthe tomb of the Empress and the Jumna Musjid, the mausoleum of the Nizams.[Pg 38]
  • 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:Abibulla saw them off with great deference and a contrite air, and watched their retreat; then, as[Pg 260] I was about to send him to despatch the message, he was indignant. The police! What could they do to a sahib like me? It was all very well to frighten poor folksit was a sin to waste money in asking for a reply which I should never be called upon to showand so he went on, till I made up my mind to think no more of the matter. And whenever I met the chief at the bazaar or by the Jellum, he only asked after my health and my amusements.

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

THREE:And then night, the real night, transparently blue and luminous with stars, appeared above the last cloud that vanished with the last clap of thunder. Unspeakable freshness and peace reigned over nature, and in the limpid air the mountain-chains, the giant Himalayas, extended to infinity in tones of amethyst and sapphire. Nearer to us, lights sparkled out in the innumerable huts built even to the verge of the eternal snows, on every spot of arable ground or half-starved grass land.
  • 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:

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