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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:[49]
  • 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:Offences, therefore, against personal security and liberty are among the greatest of crimes. Under this head fall not only the assassinations and thefts of the common people, but those also committed by the nobles and magistrates, whose influence, acting with greater force and to a greater distance, destroys in those subject to them all ideas of justice and duty, and gives strength to those ideas of the right of the strongest, which are equally perilous ultimately to him who exercises no less than to him who endures it.Ramsay argues that the penal laws of a particular country can only be considered with reference to the needs of a particular country, and not in the abstract; that the government of a country will always enforce laws with a view to its own security; and that nothing less than a general revolution will ever make the holders of political power listen for a moment to the claims of philosophers.

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

THREE:The recognition of this regulation of resentment as the main object of punishment affords the best test for measuring its just amount. For that amount will be found to be just which is necessary; that is to say, which just suffices for the object it aims atthe satisfaction of general or private resentment. It must be so much, and no more, as will prevent individuals from preferring to take the law into their own hands[84] and seeking to redress their own injuries. This degree can only be gathered from experience, nor is it any real objection to it, that it must obviously be somewhat arbitrary and variable. Both Wladimir I., the first Christian Czar of Russia, and Wladimir II. tried the experiment of abolishing capital punishment for murder; but the increase of murders by the vendetta compelled them to fall back upon the old modes of punishment.[46] Some centuries later the Empress Elizabeth successfully tried the same experiment, without the revival of the vendetta, the state of society having so far altered that the relations of a murdered man no longer insisted on the death of his murderer. But had Elizabeth abolished all legal punishment for murderhad she, that is, allowed no public vendetta of any kindundoubtedly the vendetta would have become private again.
  • 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:It may be said that all such absurdities are past; that the Jews, the Athenians, the Chinese, the Europeans of the middle ages can scarcely be cited as reasonable beings; that they had no rational theory of punishment, and that their errors have been long since discarded. But at least their example suggests that even in our own system there may be inconsistencies and blemishes which custom and authority hide from our eyes.Are the same penalties equally useful in all times?

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