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TWO:Along the roads of beaten earth, between tall plastered houses, a tramway runs. In the shopfronts the motley display suggests a curiosity shop, and the goods have a look of antiquity under the thick layer of dust that lies on everything. It is[Pg 5] only in the heart of the city, in the "Fort," that the shops and houses have a European stamp.

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:
  • 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:Last year he and his brother had gone into the mausoleum of a Moslem saint with their shoes on; both had gone mad. The other brother died in a madhouse, where he was cared for; this one, incurable but harmless, went about the highways, followed by the dogs.

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

THREE:Figures draped in pale muslins brushed past us, hastening to the door. Flower-sellers, in one of the arcades, were hurrying to finish their garlands; and suddenly, close before usa mass that looked as if it were part of the temple itselfan enormous elephant started into sight, passed on and vanished in the darkness.As we went back we found the roses carried in the morning by the Persian strewn on the ground in front of the Ali Musjid, and over them a flock of birds with red beaks were fluttering.
  • 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:After passing the temples and tombs that surround the Khoutab, the town of ruins lies scattered over the plain of pale sand and withered herbage.

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