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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:
  • 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:The rules for distinguishing between truth and falsehood98 are given in the famous Epicurean Canon. On receiving an image into the mind, we associate it with similar images formerly impressed on us by some real object. If the association or anticipation (πρ?ληψι?) is confirmed or not contradicted by subsequent experience, it is true; false, if contradicted or not confirmed.187 The stress laid on absence of contradictory evidence illustrates the great part played by such notions as possibility, negation, and freedom in the Epicurean system. In ethics this class of conceptions is represented by painlessness, conceived first as the condition, and finally as the essence of happiness; in physics by the infinite void, the inane profundum of which Lucretius speaks with almost religious unction; and in logic by the absence of contradiction considered as a proof of reality. Here, perhaps, we may detect the Parmenidean absolute under a new form; only, by a curious reversal, what Parmenides himself strove altogether to expel from thought has become its supreme object and content.188

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

THREE:During the fights round the forts I made a good many tours and was able to contradict several German reports about alleged successes. The atrocities in the villages around Lige did not cease, and constantly fresh crowds of refugees came to Maastricht.The Wijgmaal battle-field was after all the least horrible. About ten houses seemed to have been set on fire on purpose; the rest had suffered badly from the bombardment. All the inhabitants had fled as soon as the fighting began. The wounded Belgians had been placed in the large dancing-room of a caf, where father Coppens brought them a large hamper full of eatables and drinkables, and whence also he had them transported to Louvain. The food was gratefully accepted, but they were still more eager to get hold of the mugs, as they were very thirsty in consequence of the high temperature caused by the inflamed wounds; often we had to prevent them forcibly from drinking too much.
  • 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:"No, Vis."

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