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TWO:Lord Inverbroom looked completely puzzled.

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:
  • 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:"In China the women pinch their feet, so that they look like doubled fists, but nothing of the kind is done in Japan. Every woman here has[Pg 257] her feet of the natural shape and size; and as to the size, I can say that there are women in Japan that have very pretty feet, almost as pretty as those of two young ladies I know of in America. They do not have shoes like those you wear, but instead they have sandals for staying in the house, and high clogs for going out of doors. The clogs are funny-looking things, as they are four or five inches high, and make you think of pieces of board with a couple of narrow pieces nailed to the upper edges. They can't walk fast in them, but they can keep their feet out of the mud, unless it is very deep, and in that case they ought not to go out at all. I wish you could see a Japanese woman walking in her clogs. I know you would laugh, at least the first time you saw one; but you would soon get used to it, as it is a very common sight."What do they use for the burning?"

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

THREE:"You see the popular quotation is wrong," he added; "it is the course of empire that is mentioned in the poem, and not the star."
  • 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:

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