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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:The pilot, he reasoned, would go through the house after seeing that no one seemed to be following; but to be doubly sure he would go on to the front, coming out there, or to the side opposite where he had entered. Sandy matched his plans to the chance. He went, Indian-still and crouched, to a point where an ornamental tree would be in line with his movement from the side door, then in that shelter moved back to the hedged path, bent low and ran down to a cross path that took him to another point of the grounds.She set about cleaning the little revolver, self-cocking, with the thumb-piece of the hammer filed away, that her husband had given her before they were married. To-night she wanted no dinner. She was given to eating irregularly; a good deal at a time, and again nothing for a long stretch. That, too, was in the blood. So she sent the soldier cook away, and he went over to the deserted barracks.
  • 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:Cairness, talking to one of the other men, who was mending a halter, watched him, and recalled the youth in spotless white whom he had last seen lounging on the deck of an Oriental liner and refusing to join the sports committee in any such hard labor as getting up a cricket match. It was cooler here in the Arizona mountains, to be sure; but it was an open question if life were as well worth living.

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

THREE:The Reverend Taylor gradually became aware that the air was very bad. He laid down the newspaper and looked round.
  • 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:What made them jam, I wonder? mused Sandy.

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