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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:There is an apparent discrepancy in Beccarias first condemning death as too severe a punishment and then recommending lifelong servitude as one of more deterrent power; but Beccaria would have said that the greater certainty of the latter more than compensated for the greater severity of the other. As regards the relative power of the two punishments, it probably varies in different individuals, some men having a greater dread of the one, and some of the other. The popular theory certainly goes too far, when it assumes that all men have a greater dread of the gallows than of anything else. When George III. once granted a pardon to the female convicts in Newgate on condition of their transportation to New South Wales, though seventeen of them accepted[39] the offer, there were yet six who preferred death to a removal from their native country. It is also stated by Howard that in Denmark the punishment in cases of infanticide, namely, imprisonment for life, with labour and an annual whipping on the place of the crime, was dreaded more than death, which it superseded as a punishment.DEI DELITTI E DELLE PENE. TO THE READER.
  • 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 second question is, whether it is expedient to place a reward on the head of a known criminal, and to make of every citizen an executioner by arming him against the offender. Either the criminal has fled from his country or he is still within it. In the first case the sovereign encourages the commission of a crime and exposes its author to a punishment, being thereby guilty of an injury and of an usurpation of authority in the dominions of another, and authorising other nations to do the same by himself. In the second case the sovereign displays his own weakness, for he who has the power wherewith to defend himself seeks not to purchase it. Moreover, such an edict upsets all ideas of morality and virtue,[195] which are ever ready to vanish from the human mind at the very slightest breath. Now the laws invite to treachery, and anon they punish it; with one hand the legislator tightens the bonds of the family, of kindred, and of friendship, whilst with the other he rewards whosoever violates and despises them; always in self-contradiction, he at one moment invites to confidence the suspicious natures of men, and at another scatters mistrust broadcast among them. Instead of preventing one crime, he causes a hundred. These are the resources of weak nations, whose laws are but the temporary repairs of a ruined building that totters throughout. In proportion as a nation becomes enlightened, good faith and mutual confidence become necessary, and tend ever more to identify themselves with true policy. Tricks, intrigues, dark and indirect paths, are for the most part foreseen, and the general quickness of all men collectively over-reaches and blunts that of single individuals. The very ages of ignorance, in which public morality inclines men to obey the dictates of private morality, serve as instruction and experience for the ages of enlightenment. But laws which reward treachery and stir up clandestine hostility by spreading mutual suspicion among citizens, are opposed to this union of private and public morality, a union which is so necessary, and to the observance of which individuals might owe their happiness, nations their peace, and[196] the universe a somewhat longer period of quiet and repose from the evils which at present pervade it.Yet, supposing it were proved to-morrow that punishment fails entirely of the ends imputed to it; that, for example, the greater number of crimes are[80] committed by criminals who have been punished already; that for one chance of a mans reformation during his punishment there are a hundred in favour of his deterioration; and that the deterrent influence of his punishment is altogether removed by his own descriptions of it; shall we suppose for a moment that society would cease to punish, on the ground that punishment attained none of its professed ends? Would it say to the horse-stealer, Keep your horse, for nothing we can do to you can make you any better, nor deter others from trying to get horses in the same way?

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

THREE:The right to ask such a question derives itself from recent experience. In 1853 the country decided to shorten terms of penal servitude as compared with those of the then expiring system of transportation, for which they were to be substituted. Four years later it was resolved to equalise terms of penal servitude with those formerly given of transportation, though transportation for seven years was still to have its equivalent in three of penal servitude. Then came the garrotting year, 1862, in consequence of which the minimum term of penal servitude was raised to five years, whilst no sentence of penal servitude, after a previous conviction of felony, was to be for less than seven years. Now again the tide has turned in favour of shorter sentences, and it is officially proposed to relinquish the latter minimum of servitude as too severe, and as leading in practice to sentences of simple imprisonment, which on the other hand are declared to be too slight.
  • 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:If pleasure and pain are the motors of sensitive beings, if the invisible lawgiver of humanity has decreed rewards and punishments as one of the motives to impel men to even their noblest endeavours, the inexact distribution of these motives will give rise to that contradiction, as little noticed as it is of common occurrence, namely, that the laws punish crimes which are entirely of their own creation. If an equal penalty is attached to two crimes of unequal injury to society, the greater crime of the two, if it promise a greater advantage than the other, will have no stronger motive in restraint of its perpetration.[197] Whoever, for example, sees the same punishment of death decreed for the man who kills a pheasant and the man who slays his fellow or falsifies an important document, will draw no distinction between such crimes; and thus moral sentiments, the product only of many ages and of much bloodshed, the slowest and most difficult attainment of the human mind, dependent, it has been thought, on the aid of the most sublime motives and on a parade of the gravest formalities, will be destroyed and lost.

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