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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:They had need of anxiety. A scattering volley of shots came from the bushes and the rocks on the opposite side of the Tennessee River and one of the leaders in the team just ahead of him dropped dead in his tracks. The teams in front were whipped up still harder, and succeeded in getting away. The shots were answered from a line of our own men on this side of the river, who fired at the smoke they saw rising.
  • 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:"'Twan't that way at all," said tall, lathy Gid Mackall. "A whole lot of 'em made for the flag together. A charge o' grapeshot come along and blowed the rest away, but Serg't Klegg and Corpril Elliott kep' right on. Then Corpril Elliott he lit into the crowd o' rebels and laid a swath right around him, while Sergint Klegg grabbed the flag. A rebel Colonel shot him, but they couldn't stop Corpril Elliott till they shot a brass six-pounder at him."

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

THREE:"I won't stop," said Shorty angrily; "I won't let no man talk that way about the 200th Ind., no matter if he wears as many leaves on his shoulders as there is on a beech tree. I'd tell the Major-General that he lied if he slandered the regiment, if I died for it the next minute.""I see through it all," Shorty communed with himself. "They're goin' to the same place that we are, and've got them carpet-bags filled with revolvers and cartridges. Somebody's goin' to have a little surprise party before he's a day older."
  • 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 teamsters sprang up like jacks-in-the-box, and ran with all the power of their legs. By the time the explosion came they were hundreds of yards away.

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