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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:The sultan's bath is lined with panels of lapis lazuli framed in gold, and inlaid with [Pg 210]mother-of-pearl, or looking-glass, and the walls have little hollow niches for lamps, over which the water fell in a shower into a bath with a decoration of scroll-work. And in front of Jehangir's room, again a series of basins hollowed in the steps of a broad marble stair, where a stream of water fell from one to another.After inspecting my little permit to visit the Khyber, the officials at the fort had placed in my carriage a soldier of the native Khyber rifle-corps, six feet six in height, placid and gentle. When I got out of the carriage to walk up a hill he would follow a yard or so behind, and watching all my movements, looked rather as if he were taking me to prison than like an escort to protect me.
  • 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:At the top of the street a caravan of moollahs were performing their devotions at the tomb of a Mohammedan saint, whose sarcophagus was enclosed within a balustrade of marble and a border of lilies, alternately yellow and green, with large full-blown flowers in blue, fragile relics that have[Pg 223] survived for centuries amid ruins that are comparatively recent.

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

THREE:The walls are covered with bas-reliefs carved in the rock, the roof adorned with architraves of stone in infinite repetition of the same designs. The stone is grey, varied here and there with broad, black stains, and in other spots yellowish, with pale gold lights. Some of the sculpture remains still intact. The marriage of Siva and Parvati; the bride very timid, very fragile, leaning on the arm of the gigantic god, whose great height is crowned with a monumental tiara. Trimurti, a divinity with three faces, calm, smiling, and fiercethe symbol of Siva, the creator, the god of mercy, and of wrath. In a shadowed corner an elephant's head stands outGanesa, the god of wisdom, in the midst of a circle of graceful, slender, life-like figures of women. Quite at the end of the hall, two caryatides, tall and elegant, suggest lilies turned to women. In the inner sanctuary, a small edifice, with thick stone walls pierced with tiny windows that admit but a dim light, stands the lingam, a cylinder of stone crowned with scarlet flowers that look like flames in the doubtful light; and in deeper darkness,[Pg 22] under a stone canopy, another such idol, hardly visible. The Brahman priests are constantly engaged in daubing all the statues of these divinities with fresh crimson paint, and the votaries of Siva have a spot of the same colour in the middle of the forehead. Two lions, rigid in a hieratic attitude, keep guard over the entrance to a second temple, a good deal smaller and open to the air, beyond a courtyard, and screened with an awning of creepers.Near a small station oxen were filing slowly past. On their heads were hoops hung with bells, and little ornaments at the tips of their horns dangled with quick flashes of light.
  • 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:As soon as the last customer's beard was trimmed, the barber took down the cage and carried the bird to another spot whence we could hear its scream.

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