ここから本文です
TWO:

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:The River Neisse is quite narrow. In preparation for the bombardment, Frederick planted his batteries on the south side of the stream, and also approached the city from the north. It will be remembered that Frederick had an army in Silesia at his command of about forty thousand men, abundantly provided with all the munitions of war. The little Austrian garrison hurriedly thrown into Neisse consisted of but sixteen hundred men, but poorly prepared either for battle or for siege. The Austrian commandant, General Roth, determined upon a heroic resistance. To deprive the assailants of shelter, the torch was applied to all the beautiful suburbs. In a few hours the cruel flames destroyed the labor of ages. Many once happy families were impoverished and rendered homeless. Ashes, blackened walls, and smouldering ruins took the place of gardens, villas, and comfortable homes.
  • 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 the cold of the winter morning the Old Dessauer carefully reconnoitred the position of his foes. Their batteries seemed innumerable, protected by earth-works, and frowning along a cliff which could only be reached by plunging into a gully and wading through a half-frozen bog. There was, however, no alternative but to advance or retreat. He decided to advance.

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

THREE:General Loudon, take a seat by my side. I had much rather have you with me than opposite me. Mettez vous auprs de moi. Jaime mieux vous avoir c?t de moi que vis--vis.181 Four good days in penance
  • 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:In the court-yard there was a fountain with stone steps, where Frederick William loved to sit on summer evenings and smoke his pipe. He frequently took his frugal dinner here in the open air under a lime-tree, with the additional protection of an awning. After dinner he would throw himself down for a nap on a wooden bench, apparently regardless of the flaming sun.

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