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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:51 Some of the courtiers, in order to divert the king from his melancholy, and from these ideas of abdication, succeeded in impressing upon him the political necessity of visiting Augustus, the King of Poland, at Dresden. The king did not intend to take Fritz with him. But Wilhelmina adroitly whispered a word to Baron Suhm, the Polish embassador, and obtained a special invitation for the Crown Prince. It is a hundred miles from Berlin to Dresdena distance easily traversed by post in a day. It was the middle of January, 1728, when the Prussian king reached Dresden, followed the day after by his son. They were sumptuously entertained for four weeks in a continuous round of magnificent amusements, from which the melancholic King of Prussia recoiled, but could not well escape.
  • 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:At length, however, Frederick succeeded in pushing forward a detachment of his army to seize the magazines and the post he so greatly coveted. The troops marched all night. Toward morning, almost perishing with cold, they built enormous fires.304 Having warmed their numbed and freezing limbs, they pressed on to Iglau, to find it abandoned by the garrison. The Austrian general Lobkowitz had carried away every thing which could be removed, and then had reduced to ashes seventeen magazines, filled with military and commissary stores. The king was exceedingly chagrined by this barren conquest. He was anxious to advance in all directions, to take full possession of Moravia, before the Austrians could send re-enforcements to garrison its fortresses; but the Saxon lords refused to march any farther in this severe winter campaign. Frederick complained to the Saxon king. His Polish majesty sent an angry order to his troops to go forward. Sullenly they obeyed, interposing every obstacle in their power. Some of the leaders threw up their commissions and went home. Frederick, with his impetuous Prussians and his unwilling Saxons, spread over Moravia, levying contributions and seizing the strong places.

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

THREE: a a. First Position of Combined Army. b b. First Position of Prussian Camp. c c. Advance of Prussian Army. d d. Second Position of Combined Army. e e. Prussians retire to Rossbach. f. French Cavalry, under St. Germain. g g. March of Combined Army to attack Prussian Rear. h. Prussian Attack led by Seidlitz. i. Position of Prussian Guns.
  • 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:The king soon learned, to his inexpressible displeasure and mortification, that his boy was not soldierly in his tastes; that he did not love the rude adventures of the chase, or the exposure and hardships which a martial life demands. He had caught Fritz playing the flute, and even writing verses. He saw that he was fond of graceful attire, and that he was disposed to dress his hair in the French fashion. He was a remarkably handsome boy, of fine figure, with a ladys hand and foot, and soft blonde locks carefully combed. All this the king despised. Scornfully and indignantly he exclaimed, My son is a flute-player and a poet! In his vexation he summoned Fritz to his presence, called in the barber, and ordered his flowing locks to be cut off, cropped, and soaped in the most rigid style of military cut.

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