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TWO:Our boat stole slowly past the palaces, where there were no lights, through the haze rising from the river, and all things assumed a dissolving appearance as though they were about to vanish; all was shrouded and dim with mystery.

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:Making my way among the too numerous gods in relief against the overwrought walls heavy with carving, I came to a wonderful balcony where, in broken cages, I found the parrots that had betrayed me, and among them an exquisite pale yellow cockatoo of great rarity.
  • 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:Further on we came to a courtyard surrounded by a cloister, where the market for precious stones was held. The empress, invisible under her wrappers of gauze as thin as air, and surrounded by her women fanning her, would come out on her high balcony to choose the gems that pleased her for a moment by their sparkle, and then disappear into the gardens behind insurmountable walls. In another court, a[Pg 209] pool kept stocked with fish gave Shah Jehangir the pleasure of fancying he was fishing.In a little alley of booths was a shop with no front show, and behind it a sort of studio full of carvers and artists working on sandal-wood boxes, ivory fans as fine as gauze, and wooden lattices with elaborate flower patterns, used to screen the zenana windows. And in little recesses workmen dressed in white, with small copper pots about them in which they had brought rice for their meals, were chasing and embossing metal with little taps of their primitive tools, never making a mistake, working as their fancy might suggest, without any pattern, and quite at home in the maze of interlacing ornament.

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

THREE:
  • 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 rajah's sleeping-room has at one end a dais ascended by three steps; here the sovereign's bed used to be spread; and here, now, the judges of the Supreme Court have their seats. In the middle of the room was a confused array of benches and tables, and against the walls, also washed with yellow, hung a series of portraits of bewigged worthies.

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