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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:Amid the cool rush of a myriad streams is a garden, the loveliest in the world; the broad paths are shaded by cedars, banyans, palms, and crotons with purple and orange leaves. Under the garlands of gorgeous flowered climbers are hedges of roses of every shade, and shrubs starred with lavender and blue. In the ditches, above the water-plants strewn with petals like hoar-frost, grows a carpet of pale lilac cineraria.
  • 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:Captain McT's orderly appeared as soon as we stirred in the morning, shouldering armsthe "arm" an umbrella which the authorities allow as a privilege off duty to the Ghoorkhas, men from the high plateaux, who are very sensitive to sunstroke, and who wear only a cap without a pugaree. The umbrella solemnly resting against his right shoulder, this worthy stood at attention, serious and motionless, and very uprighta quaint figure, his age impossible to guess, with his Mongolian face, his little slits of eyes, and his figure, in spite of his military squareness, rather too pliant in the yellow khaki uniform.A tonga arrived just as we drove up, bringing an English official, travelling in his own carriage; gaiters, shooting jacket, a switch in his hand. He seated himself outside the bungalow in a cane chair, close by mine. Out of a case that was brought before him a hatchet and a pistol were unpacked, documentary evidence of the crime into which he was to inquire.

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

THREE:Another fakir, a young man, had come to sit at the elder's feet, and when I had finished my business the "holy man" began to knead his disciple's muscles, wringing and disjointing his arms and dislocating his left shoulder; and, as if in mockery of my distressed expression, he bent the lad's back inwards till his face was between his heels, and left him for a long minute in that torturing position.The ancient palace of the kings of Lahore. Amid the ruins there is a mosque of red stone flowered[Pg 236] with white marble, the cupola of a material so milky that it might be jade; and the structure is mirrored in a pool of clear water, dappled with sun-sparks over the rose-coloured stones at the bottom.
  • 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:A wide open space covered with rubbish heaps was to be seen where the sepoys' barracks had been, and where from the first the men had died of the plague by hundreds. In one garden, a bungalow where a[Pg 303] man had just died was being burnt downstill burning. A party of police were encouraging the fire, and a cordon of native soldiers kept everybody else off.

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