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TWO:On the bank of the river, where there are no more steps, only beaten earth, in a little raised pit a pile of wood was slowly dying out. A man with[Pg 166] a cane raked back the sticks as they fell and rolled away. A squatting crowd were waiting till their relation was altogether consumed to cast his ashes on the sacred waters.

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:We left Rawal Pindi in a tonga. The night was black, the carriage had no lamps; but now and again, at the sound of the driver's horn, dark massesbaggage camels, scarcely distinguishable in the gloommade way for us to go past at a gallop.In the depths of a deserted temple in the bazaar, amid heaps of rags, bones, and colourless debris, dwelt an old man, a very highly venerated fakir, motionless in his den, while around him were gathered all the masterless dogs of Srinagar, who allowed no one to come near him and flew at anybody who tried to enter the temple.
  • 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:As soon as he had bid us welcome, bunches of chrysanthemums were presented to us tied round a little stick. The Rajah hung garlands of jasmine round our neck, and a servant sprinkled us with otto of roses. The conversation turned on Europe, which Rawl Shri regards as a land of marvels, where fairy-like manufactures are produced and extraordinary forces have subjugated nature. He, like his cousin of Palitana, has a passion for horses, and he took me to visit his stud.

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

THREE:[Pg 205]
  • 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 night was spent in travelling: an oppressive night of crushing heat, with leaden clouds on the very top of us; and next day, in the blazing sunlight, nothing seemed to have any coloureverything was white and hot against a blue-black sky that seemed low enough to rest on the earth. Wayfarers slept under every tree, and in the villages every place was shut, everything seemed dead. It was only where we changed horses that we saw anyonepeople who disappeared again immediately under shelter from the sun.More and yet more palaces; remains of marble porticoes and columns, walls covered with tiles glittering in the blazing sunshine like topaz and emerald; and over all the peace of dust and death, the only moving thing those vultures, in shades of dull grey almost indistinguishable from the colour of the stones.

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