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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:On the 9th of October the King of Prussia issued a manifesto from his headquarters at Erfurt, calling attention to the continual aggressions of Francethose aggressions which Prussia had so long watched in profound apathy, and which, by timely union with Austria and Russia, might have been checked. But Prussia had, by her mean conduct, now stripped herself of all sympathy and all co-operation. She would have been very glad indeed of the money of Great Britain, but she had so far favoured the very aggressions of Buonaparte of which she now complained as to receive Hanover from him, and could not even now find it in her heart to surrender it, and make a powerful friend by that act of justice. The Emperor of Russia was willing to co-operate, but Prussia had made her hostile manifestations before Alexander could approach with his army. In reply to the intimations of Prussia, that she would be glad of the support of Britain, Lord Morpeth was sent to Berlin; but the language of the Prussian Ministry was still of the most selfish and impolitic character, and Lucchesini told Lord Morpeth that the fate of[526] Hanover must depend on the event of the coming war. With such a Power no union could take place, and in this isolated and pitiable condition Prussia was left to try her strength with Napoleon. As for that ambitious soldier, he desired nothing so much as this encounter with Prussia; he saw in it the only obstacle to his complete dominion over Germany, and he was confident that he should scatter her armies at the first shock.
  • 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.
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The aromatic polyimide membrane is highly permeable to water vapor but less permeable to vapors of organic compounds such as alcohol etc.

THREE:For more than four months the invincible Massena continued to watch the lines of Torres Vedras without striking a single effective blow. In fact, instead of attacking Wellington, Wellington attacked his advanced posts near Sobral on the 14th, and drove them in with the bayonet. The French then showed themselves in some force near Villa Franca, close to the Tagus; but there the gunboats reached them, causing them rapidly to retreat, and killing General St. Croix. After this, the French made no further attempt on those mountain lines which struck Massena with despair. After occupying his position for a month he fell back to the town of Santarem, and there and in the neighbouring villages quartered his troops for the winter. His great business was to collect provisions, for he had brought none with him; and had the people obeyed strictly the proclamation of Wellington and the Junta, he would have found none at all, and must have instantly retreated. But the Portuguese thought it hard to quit their homesteads and carry all their provisions to Lisbon or into the mountains, and the miserable Junta threw all the blame of the order on the British general. Not only, therefore, was a considerable amount of provisions left in the country, but boats were left at Santarem, on the Tagus, contrary to Wellington's orders, by which provisions were brought over by the French from Spain.
  • 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.
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Acetone, ethanol, methyl ethyl ketone, butanol, isopropyl alcohol, ethyl acetate, methyl isobutyl ketone, others (including hexane and toluene).