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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: "I must not fail to tell you of a remarkable temple that we have seen; not that any are unworthy of mention, but this one is certainly very curious. It is known as the Temple of Rengenhoin, and contains one thousand idols of large size; then each idol in this lot is surrounded by several smaller ones, and there is one idol larger than all the rest. The[Pg 297] whole number is said to be 33,333. We did not count them to make sure that the estimate was correct, but I should think that there must be thirty thousand at least, so that a few odd thousands, more or less, would make no difference. The whole of the inside of the temple is full of them, and each figure is said to have a particular fable connected with it. The temple is nearly four hundred feet long, and is certainly a very fine building; and there is an artificial pond in front of it, which is covered with aquatic flowers in the season for them. There is a veranda that was used in olden times for a shooting-gallery for archery purposes; it is more than two hundred feet long, and there are records of some famous matches that have been shot there. The best on the books took place more than six hundred years ago, when one man is said to have hit the bull's-eye of the target 8,000 times out of 10,000, and another is reported to have done the same thing 8,133 times in 13,053. That was certainly good shooting, and I don't believe that it would be easy to find a bowman to-day who could equal it.
  • 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:Clerical work, including shorthand and typewriting. THE SIESTA. THE SIESTA.

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

THREE:Mrs Keeling gave him his cup of tea, and waited a little before pouring out her own. It was necessary to hold the teapot so long in the air in order to extract a ration of fluid from it.
  • 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:Before reaching Hakone it was necessary to traverse a mountain pass, by ascending a very steep road to the summit and then descending another. In the wildest part of the mountains they came to a little village, which has a considerable fame for its hot springs. The boys had a fancy to bathe in these springs, and, as the coolies needed a little rest after their toilsome walk, it was agreed to halt awhile. There were several of the[Pg 201] springs, and the water was gathered in pools, which had a very inviting appearance and increased the desire of our friends to try them. They went into one of the small rooms provided for the purpose, removed their clothing, and then plunged in simultaneously. They came out instantly, and without any request to do so by the Doctor, who stood laughing at the edge of the pool. For their skins the water was almost scalding-hot, though it was far otherwise to the Japanese. The Japanese are very fond of hot baths, and will bathe in water of a temperature so high that a foreigner cannot endure it except after long practice. The baths here in the mountains were just suited to the native taste; and Frank said they would be suited to his taste as well if they could have a few blocks of ice thrown into them.THE CASTLE OF OSAKA. THE CASTLE OF OSAKA.

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