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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:On the 5th of October, 1763, Augustus, the unhappy King of Poland, had died at Dresden, after a troubled reign of thirty years. The crown was elective. The turbulent nobles, broken up into antagonistic and envenomed cliques, were to choose a successor. Catharine, as ambitious as she was able and unprincipled, resolved to place one of her creatures upon the throne, that Poland, a realm spreading over a territory of 284,000 square miles, and containing a population of 20,000,000, might be virtually added to her dominions. Carlyle writes:
  • 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:397 Some years before this time Frederick had taken possession of East Friesland, and had made Emden a port of entry. It was a very important acquisition, as it opened to Prussia a convenient avenue for maritime commerce. With great vigor and sagacity Frederick was encouraging this commerce, thus strengthening his kingdom and enriching his subjects. England, mistress of the seas, and then, as usual, at war with France, was covering all the adjacent waters with her war-ships and privateers. Frederick had inquired of the English court, through his embassador at London, whether hemp, flax, or timber were deemed contraband. No, was the official response. Freighted with such merchandise, the Prussian ships freely sailed in all directions. But soon an English privateer seized several of them, upon the assumption that the planks with which they were loaded were contraband.

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

THREE:Well, the king replied, kindly, try it one day more. If we do not mend matters, you and I will both desert together.
  • 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 carrying forward these intrigues at the camp of Frederick, the Count of Belleisle had an associate minister in the embassy, M. De Valori. A slight incident occurred in connection with this minister which would indicate, in the view of most persons, that Frederick did not cherish a very high sense of honor. M. Valori was admitted to an audience with his Prussian majesty. During the interview, as the French minister drew his hand from his pocket, he accidentally dropped a note upon the floor. Frederick, perceiving it, slyly placed his foot upon it. As soon as the minister had bowed himself out, Frederick eagerly seized the273 note and read it. It contained some secret instructions to M. Valori from the French court, directing him not to give Glatz to his Prussian majesty if it could possibly be avoided. Frederick did not perceive any thing ignoble in this act of his, for he records it himself;56 neither does Mr. Carlyle condemn him.57 Most readers will probably regard it as highly dishonorable.185 On the 26th of May the Crown Prince received an express informing him that his father was dying, and that he must hasten to Potsdam with the utmost speed if he would ever again see him alive. Reinsberg was about thirty miles north from Potsdam. It took the courier some hours to reach the place. Frederick, with emotions not easily imagined, started before the dawn of the morning, followed by a train of attendants, to hasten to the death-bed of his father, and to receive the kingly crown of Prussia.

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