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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:All alike were fevered from the deafening music of harmoniums and tom-toms performing at the back of each gambling-bootha din that drowned shouts of glee and quarrelling."How much for this stuff?"
  • 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:A poor sick ape, beaten by all the others, sat crying with hunger at the top of a parapet. I called her for a long time, showing her some maize on a tray. At last she made up her mind to come down. With the utmost caution she reached me, and then, after two or three feints, she struck the platter with her closed fist, sending all the grain flying. Utterly scared, she fled, followed to her perch by a whole party of miscreants roused by the gong-like blow on the tray. Others stole into the temple to snatch the flowers while the attendant priest had his back turned; and when I left they were all busily engaged in rolling an earthenware bowl about, ending its career in a smash. In front of the temple the crimson dust round a stake shows the spot where every day the blood is shed of a goat sacrificed to the Divinity.All the day long a solid blue mass melting into rain hid the mountains and darkened the nearer view; and our return journey was made between two grey walls, through which the trees, which sometimes met in an arch overhead, were but dimly visible.

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

THREE:"Ah, your Kali, then?"
  • 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:And so on, in an endless file, come the bodies of the faithful dead, some from long distances, so that their souls may rise at once to paradise from their ashes burnt on the Manumenka.And as they went home at nightfall enormous bats came out and flew across above the tall trees in heavy, steady, straight flight. Without a sound they made for the last gleam on the horizon, where[Pg 98] the vanished sun had left a crimson line; and what an insistent image of death and oblivion were those great black fowl, slowly flapping their five-fingered wings spread out round their bodies, headless as they would seem, so small is the head, and so close-set on the neck. One might fancy that they were bearing away the day, gliding noiseless and innumerable towards the west, where already the last gleam is dead.

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