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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:
  • 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:The king now announced to Ministers his fixed resolve to call in another Cabinet, though the Whigs had endeavoured to keep office by dropping the Bill, and on the 25th of March they delivered to the king their seals of office. Erskine alone retained his for a week, that he might pronounce his decrees on the Chancery suits which had been heard by him; and two days before he parted with the Seal, he took the opportunity to make his son-in-law, Edmund Morris, a Master in Chancery. This was regarded as a most singular act, Erskine being no longer bona fide Chancellor, but only holding the Seal for a few days after the resignation of his colleagues, to complete necessary business. The House adjourned to the 8th of April, and before this day arrived the new appointments were announced. They werethe Duke of Portland, First Lord of the Treasury; Lord Hawkesbury, Secretary of the Home Department; Canning, Secretary for Foreign Affairs; Lord Castlereagh, Secretary for War and the Colonies; the Earl of Chatham, Master of the Ordnance; Spencer Perceval, Chancellor and Under-Treasurer of the Exchequer; Lord Camden, Lord President of the Council; Lord Bathurst, President of the Board of Trade, with George Rose as Vice-President; the Earl of Westmoreland, Keeper of the Privy Seal; Lord Eldon, Lord Chancellor; and the Duke of Richmond, Lord-Lieutenant of Ireland. As the Duke of Portland's health was bad, the real Prime Minister was Mr. Perceval.
  • 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:Argyll, who received the news of the retreat about four in the afternoon of that day, occupied Perth with Dutch and English troops by ten o'clock the next morning. They had quitted Stirling on the 29th, and that night they encamped on the snow amid the burnt remains of the village of Auchterarder. Argyll and Cadogan followed the advanced guard and entered Perth on[32] the evening of the 1st of February; but the remainder of the troops did not arrive till late at night, owing to the state of the roads and the weather. Some few of the rebels, who had got drunk and were left behind, were secured. The next day Argyll and Cadogan, with eight hundred light foot and six squadrons of dragoons, followed along the Carse of Gowrie to Dundee. Cadogan, in a letter to Marlborough, complained of the evident reluctance of Argyll to press on the rebels. When he arrived at Dundee on the 3rd, the rebel army was already gone. He and Cadogan then separated, taking different routes towards Montrose. Cadogan, whose heart was in the business, pushed on ahead, and on the 5th, at noon, reached Arbroath, where he received the news that the Pretender had embarked at Montrose and gone to France. In this manner did the descendant of a race of kings and the claimant of the Crown of Great Britain steal away and leave his unhappy followers to a sense of his perfidious and cruel desertion. His flight, no doubt, was necessary, but the manner of it was at once most humiliating and unfeeling. The consternation and wrath of the army on the discovery were indescribable. They were wholly broken up when Argyll reached Aberdeen on the 8th of February.

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