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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:[318]
  • 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:A new Ministry was appointed with Prince Schwarzenberg at its head, and on the 2nd of December the Emperor Ferdinand abdicated in favour of his nephew, Francis Joseph, whose father Francis Charles, next in succession, renounced his claim to the throne. The retiring emperor stated that the pressure of events, and the immediate want of a comprehensive reformation[580] in the forms of State, convinced him that more youthful powers were necessary to complete the grand work which he had commenced. The real reason was that Lord Palmerston, who in his private correspondence held the Emperor to be "next thing to an idiot," had been constantly advising him to resign his sceptre into firmer hands. The young Emperor, in his proclamation, expressed his conviction of the value of free institutions, and said that he entered with confidence on the path of a prosperous reformation of the monarchy.

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

THREE:The fleet sailed from the Downs on the 28th of July, 1809, and on the 30th it touched at the islands of South Beveland and Walcheren. The orders of the Government were, "the capture or destruction of the enemy's ships, building or afloat at Antwerp and Flushing; the destruction of the arsenals at Antwerp, Terneuse, and Flushing; the reduction of the island of Walcheren, and, if possible, the rendering of the Scheldt no longer navigable for ships." Nelson, who had contemplated this enterprise, had calculated that it would require four or five thousand men, and could be accomplished in a week. But now Buonaparte had rendered the task more difficult, and there was no Nelson to do it. The most sagacious of the officers pointed out that the first rush should be for Antwerp, as the extreme point of the expedition, so as to destroy or capture the vessels there before the French could come to the rescue. The places nearer to the sea could be taken in returning. Had the troops landed at Blankenberg, they could have made a rapid march along a paved road through Bruges and Ghent, and captured Antwerp, only forty-five miles distant, whilst the fleet ascended the Scheldt to receive them on their return; but no such common-sense ideas found acceptance with the commanders. They determined to reduce Flushing first, and the other forts on the Scheldt, as Lillo and Liefkenshoek, in succession, by which time it was certain that the French would appear at Antwerp in numbers sufficient to protect it. Flushing was attacked on the 1st of August, and did not surrender till the 16th. Had this been the reduction of Antwerp, the rest of the objects of the expedition would have followed of course; but Lord Chatham and Rear-Admiral Strachan were in no hurry. They remained signing the capitulation, securing six thousand prisoners that they had taken, and reducing two small islands to the north of the eastern Scheldt, till the 21st (three whole weeks virtually wasted!), and on the 23rd they landed at Ter Goes, on the neighbouring island of South Beveland. Here, again, they delayed another precious fortnight, whilst the[582] French were planting batteries at every turn of the river between them and Antwerp; had drawn a boom-chain across the channel between Lillo and Liefkenshoek; and had sunk vessels to obstruct the narrowest part of the channel beyond. They still talked of forcing their way to Antwerp; but according to a satiric rhyme of the time
  • 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:On the 18th of October the Americans crossed the frontier opposite to the village of Queenstown with three thousand men, and found only three hundred British to oppose them. But Brock was with them, and cheered them so gallantly that they made a desperate resistance. Unfortunately, Brock was killed, and then the brave three hundred retreated, and the American general, Wadsworth, posted himself, with one thousand six hundred men, on the heights behind Queenstown. But the same afternoon he was attacked by a fresh body of about one thousand British and Canadians, and had nearly his whole force killed or taken prisoners. Himself and nine hundred of his men were captured, and four hundred remained on the field slain or severely wounded. The rest, a mere remnant, escaped into the woods, or were drowned in endeavouring to swim back to their own shore. Thus ended Madison's first attempt to conquer Canada.

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