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TWO:HARDWAR

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:Fakirs, holding out their begging-bowls as they squatted round an opening in the ground, showed that it was the entrance to a temple; a few steps down, a long corridor with little niches on each side, and then hall after hall full of grimacing gods, lighted up by our guide's torch, till at last we reached an immense vault where impenetrable darkness filled the angles lost in a labyrinth of arcades converging to some mystery. Here all the Hindoo gods, carved in stone, have been crowded together, with their horrible contortions, their stolid beatitude, their affected grace; and in their midst is a huge idol, hacked with a great cut by Aurungzeeb, the Moslem emperor, at the time of his conquest. Suddenly all about us was a crowd of Brahmins, appearing from what dark corners we could not discover. They looked nasty and half asleep, and vanished at once with a murmur of whispered speech that hung about the galleries in an echo.In the evening at Byculla, in the street of the disreputable, in front of a house hermetically closed, and painted with a round red spot for each person who had died there, a fire of sulphur was burning with a livid glow. Only one gambling-house tried to tempt customers with a great noise of harmonium and tom-toms; and from a side street came a response of muffled tambourines and castanets. First the dead, wrapped in red stuff and tied to a bamboo, and then the procession turned into the lighted street. White shapes crowded by, vanishing at once, and the harmonium again rose above the silence with its skipping tunes, and the tom-toms beating out of timeand attracted no one.
  • 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:

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 pile of the girl with marigold wreaths and the shroud stained crimson and purple flung her ashes to the winds, reduced to mere atoms of bone and light cinder, and the servants of the place drowned a few still glowing sticks in the river;[Pg 169] the family and friends slowly went up the yellow stone steps and disappeared through a gateway leading into the town.The attendants threw water on the pauper's pyre, and then with their long bamboos pushed the mass of burnt wood and flesh into the Ganges, where it looked like some enormous black frog with a white patch for the head.

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