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

THREE:In the first place, our public works prisons, however excellent for their material results, are so many schools of crime, where for the one honest trade a man learns by compulsion he acquires a knowledge of three or four that are dishonest. I have become acquainted, says a released convict, with more of what is bad and evil, together with the schemes and dodges of professional thieves and swindlers, during the four years I served the Queen for nothing, than I should have done in fifty years outside the prison walls. The association rooms at Dartmoor are as bad as it is possible for anything to be they are really class-rooms in the college of vice, where all are alike students and professors. The present system in most instances merely completes the mans vicious and criminal education, instead of in the slightest degree reforming him.[56] It has been attempted in various ways to obviate this difficulty, by diminishing opportunities of companionship; but the real demoralisation of prison life is probably due less to the actual contact of bad men with one another than to the deadened sense of criminality which they derive from the feeling of numbers, just as from the same cause the danger of drowning is forgotten on the ice. Prisoners in gangs lose all shame of crime, just as men in armies forget their native horror of murder.
  • 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 is a great point in every good system of laws to determine exactly the credibility of witnesses and the proofs of guilt Every reasonable manthat is, every man with a certain connection between his ideas and with feelings like those of other menis capable of bearing witness. The true measure of his credibility is only the interest he has in speaking or in not speaking the truth; so that nothing can be more frivolous than to reject the evidence of women on the pretext of their feebleness, nothing more childish than to apply the results of real death to civil death as regards the testimony of the condemned, nothing more unmeaning than to insist on the mark of infamy in the infamous when they have no interest in lying.

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