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TWO:Landor went forward again. "Can you, gentlemen, tell me," he demanded a trifle wrathfully, "where I can find Mr. Foster?" They reckoned, after deliberation, that he might be in Bob's saloon. Which might Bob's saloon be? The man pointed, hooking his thumb over his shoulder, and went on with his conversation and his quid. A dozen or more loafers, chiefly Mexicans, had congregated in front of the dry-goods store.

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:James Bradley (b. 1692), who succeeded Halley as the third Astronomer Royal, held that post till 1762, when he died. He had in 1728 distinguished himself by his discovery of an unanswerable proof of the motion of the earth by his observations on the apparent alteration in the place of a fixed star. His second great discovery was that of the mutation of the earth's axis, showing that the pole of the equator moves round the pole of the elliptic, not in a straight but in a waving line. Bradley gave important assistance to the Ministry in their alteration of the calendar in 1751, and the vast mass of his[153] observations was published after his death, by the University of Oxford, in two volumes, in 1798.

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:

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