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TWO: him.

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:"I knew you'd be," answered the Lieutenant; "so I got the General to let me have you. We'll get some 10 or 12 other good boys. That will be enough. I understand that there are about 100 regular attendants at the lodge, but they'll not all be there at any time, and a dozen of us can easily handle what we find there at home."
  • 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:THOUGH Si and Shorty were certain that the trouble was over and the rebels all gone, it was impossible to convince the boys of this. The sudden appearance of the guerrillas had been so mysterious that they could not rid themselves of the idea that the dark depths beyond the creek were yet filled with vicious foemen animated by dire intents.

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:That was a little trick only learned by hard service."Now," said Si, "pack your rations carefully in your haversacks, just as you see me and Corpril Elliott doin'. First, keep your sugar, coffee and salt separate. Put 'em in little tin boxes, like these, and see that the lids are on tight. Hurry up, now. Shorty, you'd better look over the boxes, and go up and draw as many cartridges as you think we'll need."

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