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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:Then some bull-teams going to Camp Apache had stopped over night at the Agency. The teamsters had sold the bucks whiskey, and the bucks had grown very drunk. The representatives of the two tribes which were hereditary enemies, and which the special agent of an all-wise Interior Department had, nevertheless, shut up within the confines of the same reservation, therewith fell upon and slew each other, and the survivors went upon the warpath—metal tags and all. So the troops had been called out, and Landor's was at San Carlos.It was quite in keeping with everything that had gone before that, the day after a passing Franciscan priest had married them, Landor should have been ordered off upon a scout, and Felipa should have taken it as a matter of course, shedding no tears, and showing no especial emotion beyond a decent regret.
  • 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:She could hear voices confusedly, men hurriedly calling and hallooing as she neared the back of the officers' line and crept into her tent. The door was barely closed when there came a knock, and the voice of the striker asking if she had heard the shot across the river.

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

THREE:Did she show the squaw? he asked. "Not unless you knew it was there," the officer said tolerantly. Then he went to bed and slept with that peace of mind which comes of a proud consciousness of holding the handle of the whip. In the morning he got the[Pg 28] man's name and address before he went on up to the Agency.After a time, when a soldier bent over him and held a flask to his teeth, he drank, and then he pointed feebly, and his lips framed the question he could not seem to speak.
  • 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:It was certainly not apparent, on the face of it, how the thing was to be done, but the captain explained. "I've been stationed here, you know, and I know the roads. We are about a half a mile or more from where the Stanton road to the railway crosses the lava. It is narrow and rough, and about from three-quarters of a mile to a mile wide, but cavalry can go over it without any trouble. I can take my troop over, and then the Indians will be hemmed in between us. We might capture the whole band."

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