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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:CHAPTER XV. THE REIGN OF VICTORIA (continued).A debate which took place shortly afterwards was characterised by a memorable scene. In the month of January, 1843, Mr. Edward Drummond, the private secretary of Sir Robert Peel, had been shot in the street at Charing Cross, by an assassin, named M'Naughten. The unfortunate gentleman died of the wound, and the wildest rumours agitated the town as to the motive which had prompted the deed. Many asserted that it was a political one. M'Naughten had been seen loitering in Whitehall Gardens, and had followed his victim from Sir Robert Peel's residence in that locality. It was at once rumoured that the Prime Minister was the intended victim. M'Naughten had come from Glasgow, and it was said that when the Queen was in Scotland Sir Robert Peel invariably rode in the royal carriage, and Mr. Drummond in Sir Robert's own carriage. If this were true, it was remarked, the assassin's confidence would have been complete when he saw Mr. Drummond actually leave the house of Sir Robert Peel. Although the assassin was afterwards proved to be insane, the fact, coupled with the political excitement of the time, made a painful impression upon the minds of public men.
  • 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:But the League did more than attempt to convert the country party. They determined to create a country party of their own. They had already taken up the registration of voters in the[510] boroughs, from which they proceeded, with that practical common sense which had distinguished nearly all their movements, to inquire into the position of the country constituencies, where hitherto the landowners had held undisputed sway. The scheme which resulted from this incursion into the dominions of the enemy was developed by Mr. Cobden at a meeting in the Free Trade Hall, Manchester, on the 24th of October, 1844. The Chandos clause in the Reform Act, giving the tenant-farmers votes for county members, had so strengthened the landlords' influence in the county that opposition at most of the county elections was hopeless. But Mr. Cobden showed his hearers that the counties were really more vulnerable than the small pocket boroughs. In many of these there was no increase from year to year in the number of votersno extension of houses. The whole property belonged to a neighbouring noble, and as Mr. Cobden said, "You could no more touch the votes which he held through the property than you could touch the balance in his banker's hands." But the county constituency might be increased indefinitely, for there it required but a freehold property of the value of forty shillings a year to give a man a vote. This sum had been adopted from an ancient regulation, when money was of far greater value, and land of far less money worth than it was then; but the forty-shilling qualification existed, and was a powerful engine for the creation of voters. Up to that time it had had but little effect. The laws of England, but more especially the habits and prejudices of landowners, had always kept the land of the county in so few hands as to present an extraordinary contrast with the condition of things in all other nations of Europe. The danger of the forty-shilling clause to aristocratic influence in the county was not perceived, simply because forty-shilling freeholders were rare. But there was no reason why they should be rare. The passion for possessing freehold land was widely spread, and a few facilities offered for purchasing it would soon create a large number of small holders. The chief difficulty in the way of this had hitherto been the great cost of transferring land. Owing to the complicated laws of real property, the land, unlike other articles, could only be bought and sold after a minute investigation into the owner's title, which necessitated an historical account of the ownership extending back over many years. All this, however, the League could easily obviate. They could buy land in the lump, register its title once for all, and part it into small pieces for small buyers. "This," remarked Mr. Cobden, "must be done," and it was done. The Conservative party sneered at the Manchester man's proposition of serving land over a counter, like calico, by the yard; but the movement soon began to tell upon elections, and to alarm the great landed proprietors.[270]

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

THREE:Things being in this position on the arrival of Admiral Lord Howe, he determined still, notwithstanding the Proclamation of Independence, to make every effort to procure a last chance of peace. He deeply regretted the delays which had attended his fleet, and lost no time in sending on shore an intimation that he brought conciliatory overtures. His first act was to dispatch a letter to Franklin, who, in England, had expressed so earnest a desire for accommodation of all differences, informing him of his commission to seek reconciliation, and of his powers for the purpose. But the Declaration being now made, Franklin had no longer a motive to conceal his real sentiments, and he replied in terms which greatly astonished Howe, filling his letters only with complaints of "atrocious injuries," and of what America had endured from "your proud and uninformed nation." Howe next turned to Washington, to whom he dispatched a flag of truce, bearing a letter to the Commander-in-Chief. But as Washington could only be regarded as an insurgent leader, Lord Howe thought he could not officially recognise a title conferred only by the American Congress, and therefore did not address him as "General," but simply as "George Washington, Esquire." Washington refused to treat in any other character than that of Commander-in-Chief of the American forces. He instantly returned Howe's letter, and forwarded the other papers to Congress. One of these was a circular declaration to the late royal Governors, enclosing a copy of Lord Howe's commission, and stating that all who should submit would be pardoned; that any town or province which declared its adhesion to the Crown should at once be exempt from the provisions of all the late Acts of Parliament, especially as regarded their trade; and that, moreover, all such persons as were active in promoting the settlement of their districts should be duly rewarded. The moment Congress received this document they ordered it to be published in the newspapers, that "the people might see how the insidious Court of Great Britain had endeavoured to disarm and amuse them," and that "the few whom hopes of moderation and justice on the part of the British Government had still kept in suspense, might now at length be convinced that the valour alone of their country is to save its liberties." Lord Howe, undeterred by this spirited proceeding of Congress, on the 20th of July sent the Adjutant-General once more to Washington, with another letter, still addressed to "George Washington, Esquire," but adding a number of etceteras. Washington was not to be caught by so shallow an artifice. The proposed interview, like the last, therefore, came to nothing, except that Congress took advantage of these repeated efforts to insinuate that the British were afraid of fighting.
  • 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:BELL'S "COMET." (See p. 421.)

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