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TWO:96

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:Upon the return of the Crown Prince to Cüstrin after the marriage of Wilhelmina, several of the officers of the army sent in a petition to the king that he would restore to the prince his uniform and his military rank. The king consented, and made out his commission anew as colonel commandant of the Goltz regiment at Ruppin. This was a small town about seventy-five miles northeast of Berlin. His commission was signed on the 29th of February, 1732, he being then twenty years of age. In this little hamlet, mainly engaged in the dull routine of garrison duties, the prince passed most of his time for the next eight years.While these scenes were transpiring, the Crown Prince was at Cüstrin, upon probation, being not yet admitted to the presence of his father. He seems to have exerted himself to the utmost to please the king, applying himself diligently to become familiar with all the tedious routine and details of the administration of finance, police, and the public domains. Fritz was naturally very amiable. He was consequently popular in the little town in which he resided, all being ready to do every thing in their power to serve him. The income still allowed him by his father was so small that he would have suffered from poverty had not the gentry in the neighborhood, regardless of the prohibition to lend money to the prince, contributed secretly to replenish his purse.

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

THREE:One of Fredericks dogs, Biche, has attained almost historic celebrity. We can not vouch for the authenticity of the anecdote, but it is stated that the king took Biche with him on the campaign of 1745. One day the king, advancing on a reconnoissance, was surprised and pursued by a large number of Austrians. He took refuge under a bridge, and, wrapping Biche in his cloak, held him close to his breast. The sagacious animal seemed fully conscious of the peril of his master. Though of a very nervous temperament, and generally noisy and disposed to bark at the slightest disturbance, he remained perfectly quiet until the Austrians had passed.
  • 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:What was the sum of money your majesty then offered the Queen of Austria? Lord Hyndford inquired.

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