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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 Budget was brought forward on the 13th of February. It proposed to continue the income tax, which experience had shown to afford a means of supplying the place of taxes repealed, until such time as the revenue should recover itself. The Minister then unfolded his scheme, which formed no unworthy complement to his great Budget of 1842. It proposed a reduction in the sugar duties, which could not be calculated at less than 1,300,000, and was expected to lower the price to the consumer by about 1-1/4d. a pound. The Minister then proceeded to refer to a list of articles, 430 in number, which yielded but trifling amounts of revenue, and many of which were raw materials used in the various manufactures of the country, including silk, hemp, flax, and yarn or thread (except worsted yarn), all woods used in cabinet-making, animal and vegetable oils, iron and zinc in the first stages, ores and minerals (except copper ore, to which the last Act was still to apply), dye stuffs of all kinds, and all drugs, with very few exceptions; on the whole of these articles he proposed to repeal the duties altogether, not even leaving a nominal rate for registration, but retaining the power of examination. The timber duties generally he proposed to continue as they were, with the one exception of staves, which, as the raw material of the extensive manufacture of casks, he proposed to include with the 430 articles, and to take off the duty altogether. On these articles the loss amounted to 320,000. The next and most important relief in the whole proposition was the article of cotton wool, on which the Minister proposed also to reduce the duty altogether, and on which he estimated the loss at 680,000; and these constituted the whole of the proposed reductions of the import dutiesthat is, sugar, cotton wool, and the numerous small articles in the tariff. The next items of reduction proposed were the few remaining duties on our exports, such as china-stone, and other trifling things, but including the most important article of coals, on which the duty had been placed by the Government, and at the result of which Sir Robert Peel candidly avowed his disappointment. The duties he estimated at 118,000. He then passed on to the excise duties, among which he had selected two items of great importance for entire repealthe auction duty and the glass duties. By a repeal of the auction duty he estimated a loss of 300,000; but as he proposed, at the same time, to increase the auctioneer's licence uniformly from 5 to 15 (making one licence answer for all purposes, whereas, at that time, several licences were often necessary to the same party) he expected from 4,000 auctioneers an increased income, so as to reduce this loss to 250,000. On the important article of glass he gave up 642,000. These constituted the whole of his proposals; and the surplus of 2,409,000 was thus proposed to be disposed of:Estimated loss on sugar, 1,300,000; duty on cotton repealed, 680,000; ditto on 430 articles in tariff, 320,000; export duty on coal, 118,000; auction duty, 250,000; glass, 642,000. Total, 3,310,000.

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

THREE:The attention of the public was now again drawn to those unnatural feuds which disturbed the Royal Family. The exhibition of domestic discord and hatred in the House of Hanover had, from its first ascension of the throne, been most odious and revolting. The quarrels of the king and his son, like those of the first two Georges, had begun in Hanover, and had been imported along with them only to assume greater malignancy in foreign and richer soil. The Prince of Wales, whilst still in Germany, had formed a strong attachment to the Princess Royal of Prussia. George forbade the connection. The prince was instantly summoned to England, where he duly arrived in 1728.[162]
  • 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:Great exertions had been made to draw Prussia into the confederation that was forming, and on the 25th of May, 1804, a defensive alliance had been concluded between Prussia and Russia. But the King of Prussia was, at the same time, listening to the offers of Buonaparte, who was encouraging him to expect the annexation of Hanover, and also further territory at the cost of Austria. In these circumstances, Prussia kept a dubious position, but continued to strengthen her armies for an emergency, holding herself ready to close with the best offer. Austria herself was afraid of another war with Buonaparte, and strongly urged that negotiations should be opened with him before proceeding to extremities. However, she too concluded a treaty with Russia in November. It was Pitt's object to draw these threads together. Fortunately the Czar sent his Minister, Nowosiltzoff, to England in 1805, and he readily fell in with Pitt's ideas. Accordingly, on the 11th of April the Treaty of St. Petersburg was signed on the basis of the maintenance of the Treaties of Lunville and Amiens. The great coalition was thus practically complete, when news arrived that Buonaparte had annexed Genoa to France. This was a most gross violation of the Treaty of Lunville. But the annexation of Genoa was but a small part of the aggressions of Buonaparte on Italy. On the very same journey he made himself King of Italy. On Sunday, the 26th of May, he was crowned in the cathedral of Milan. The Archbishop of Milan performed the ceremony, blessing the old iron crown of the ancient kings of Lombardy, and Buonaparte putting it himself on his head, as he had done that of France. Nor did Napoleon stop here. He wanted a little snug principality for his sister Eliza and her husband, the Corsican Bacciochi, and he turned the Republic of Lucca into such an one, and conferred it upon them.[See larger version]

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