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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:With a cry of alarm she tried to draw her sister away, but the wizard, taking her hand, seemed to study it carefully, and suddenly dropped it with a strange exclamation.
  • 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:CHAPTER IX

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

THREE:But nobody was afraid of Louis XVI., and when he did command he was by no means sure of obedience. He had ascended the throne with the most excellent intentions, abolished all sorts of abuses, and wanted to be the father of his people. But a father who cannot be respected is very likely not to be loved, and a ruler who cannot inspire fear cannot inspire respect either, and is not so fit to be a leader as one who possesses fewer virtues and more strength and courage.
  • 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 the marriage was decided.She was received with delight at her house in the rue du Gros-Chenet, by M. Le Brun, her brother, her sister-in-law, and their only child, the niece who was to fill her daughters place. The house was beautifully furnished and filled with flowers, and that same evening a grand concert in her honour was given in the large salon of a house in a garden adjoining, which also belonged to M. Le Brun, who told her that he had during the [147] Revolution, when the churches were closed, lent this salon to celebrate mass.

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