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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:Our critics are not content with bringing up Aristotle as an authority on the metaphysical controversies of the present day, and reading into him theories of which he never dreamed:279 they proceed to credit him with modern opinions which he would have emphatically repudiated, and modern methods which directly reverse his scientific teaching. Thus Sir A. Grant takes advantage of an ambiguity in the word Matter, as used respectively by Aristotle and by contemporary writers, to claim his support for the peculiar theories of Prof. Ferrier; although the Stagirite has recorded his belief in the reality and independence of material objects (if not of what he called matter) with a positiveness which one would have thought left no possibility of misunderstanding him.168 And Mr. Wallace says that Aristotle recognises the genesis of things by evolution and development; a statement which, standing where it does, and with no more qualifications than are added to it, would make any reader not versed in the subject think of the Stagirite rather as a forerunner of Mr. Darwin and Mr. Herbert Spencer, than as the intellectual ancestor of their opponents; while, on a subsequent occasion, he quotes a passage about the variations of plants under domestication, from a work considered to be un-Aristotelian by the best critics, apparently with no other object than that of finding a piece of Darwinism in his author.169
  • 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 last alternative seems the most probable. Nature with the Stoics was a fixed objective order whereby all things work together as co-operant parts of a single system. Each has a certain office to perform, and the perfect performance of it is the creatures virtue, or reason, or highest good: these three expressions being always used as strictly synonymous terms. Here we have the teleology, the dialectics, and the utilitarianism of Socrates, so worked out and assimilated that they differ only as various aspects of a single truth. The three lines of Socratic teaching had also been drawn to a single point by Plato; but his idealism had necessitated the creation of a new world for their development and concentration. The idea of Nature as it had grown up under the hands of Heracleitus, the Sophists, and Antisthenes, supplied Zeno with a ready-made mould into which his reforming aspirations could be run. The true Republic was not a pattern laid up in heaven, nor was it restricted to the narrow dimensions of a single Hellenic state. It was the whole real universe, in every part of which except in the works of wicked men a divine law was recognised and obeyed.46 Nay, according to Cleanthes, Gods law is obeyed even by the wicked, and the essence of morality consists only in its voluntary fulfilment. As others20 very vividly put it, we are like a dog tied under a cart; if we do not choose to run we shall be dragged along.47

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

THREE:
  • 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:

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