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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:Near her was another woman, gone mad, dancing, her skeleton limbs contorted in a caricature of[Pg 193] grace; and a child of some few months, like an undeveloped abortion, of the colour of a new penny, with a large head rolling on a neck reduced to the thickness of the vertebr?, and arms and legs no larger than knitting-pins, but, in a sort of mockery, the swollen belly of the fever-stricken. The eyes blinked in the little wrinkled face, seeking something in vacancy; it tried to cry, but the only sound was a feeble croak.
  • 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: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.A Catholic church flanking the Jesuit college persistently sent up to us the shrill tinkle of a little bell, rattling out its quick, harsh strokes like a factory bell for workmen.

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

THREE:Between the cliff-walls of the defile, in a sort of bay, stands Ali Musjid, a little white mosque where travellers tarry to pray.A smart affair altogether is this carriage! two very high wheels, no springs, a tiny cotton awning[Pg 269] supported on four sticks lacquered red, and sheltering the seat which has three ropes by way of a back to it. Portmanteaus and nosebags are hung all round, and even a kettle swings from the near shaft, adding the clatter of its cymbal to the Indian symphony of creaking wheels, the cracking whips, the driver's cries of "Cello, cello," and Abibulla's repeated "Djaldi," all intended to hurry the horse's pace.
  • 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:This Rawal Pindi is an English town of cottages surrounded by lawns and shrubberies; about two streets of bazaar, and red uniforms everywhere, Highland soldiers in kilts, white helmets, and the officers' and sergeants' wives airing their Sunday finery in their buggies. The ladies drive themselves, under the shelter of a sunshade on an all[Pg 239] too short stick, painfully held by a hapless native servant clinging to the back of the carriage in a dislocating monkey-like attitude.

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