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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:(From a Drawing by Gravelot engraved by W. J. White.)
  • 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:[210]

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

THREE:Government now resorted to vigorous measures; the Chartist leaders were brought to trial, and sentenced to various terms of imprisonment. At a meeting of the National Convention held on the 14th of September, it was moved by Mr. O'Brien, and seconded by Dr. Taylor, that the Convention be dissolved. On a division, the numbers were for the dissolution eleven; against it eleven. The chairman gave his casting vote in favour of the dissolution. It was thereupon hoped, and, indeed, publicly declared by the Attorney-General, that Chartism was extinct and would never again be revived. It soon appeared, however, that this was a delusion, and that a most formidable attempt at revolution by force of arms had been planned with great care and secrecy, and on a comprehensive scale, the principal leader being a justice of the peace. Among the new borough magistrates made by the Whigs after the passing of the Reform Bill was Mr. John Frost, a linendraper at Newport. At the beginning of the Chartist agitation in 1838 Mr. Frost attended a meeting in that town, when he made a violent speech, for which he was reprimanded by the Home Secretary. But this warning was far from having the desired effect. During the autumn of 1839 he entered into a conspiracy with two other leadersJones, a watchmaker, of Pontypool, and Williams, of the Royal Oak Inn, in the parish of Aberystwithto take possession of the town of Newport, which was to be the signal for a simultaneous rising of the Chartists in Birmingham and in all other parts of the kingdom. But the weather was unfavourable and the night was dark. The divisions under the command of Jones and Williams failed to arrive at the appointed time, and the party under the command of Frost himself was late. The intention was to surprise Newport at about midnight on Sunday, the 3rd of November; but owing to the wetness of the weather it was not till ten o'clock on Monday morning that the insurgents entered the town in two divisions, one headed by Frost, and another by his son, a youth of fourteen or fifteen. They were armed with guns, pistols, pikes, swords, and heavy clubs. The mayor, Mr. Thomas Philips, apprised of their approach, had taken prompt measures for the defence of the place.
  • 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:From economical and colonial, Ministers proceeded to Parliamentary reform. Sir Harbord Harbord had introduced, before their accession to office, a Bill to disfranchise the rotten borough of Cricklade, in Wiltshire, as Shoreham had already been disfranchised. The new Ministry supported it, with the exception of their strange colleague, Thurlow, whom they ought to have insisted on being dismissed. Cricklade was a thoroughly venal borough, regularly sold to some East Indian nabob; and Mr. Frederick Montagu, in the debate, quoted Lord Chatham's remark on Shoreham, which had also been the purchased lair of Indian corruptionists, that he "was glad to find the borough of Shoreham likely to be removed from Bengal to its ancient situation in the county of Sussex."Thus argued the Conservatives, and not without effect, for the clause against disfranchising the freemen was carried only by a majority of twenty-eight; and in the passage through the Lords several important amendments were carried against the Government, owing chiefly to the vigorous opposition of Lord Lyndhurst. He proceeded to convert the Bill into what was called a Conservative arrangement, and when Peel's moderation was brought up against him, is said to have remarked, "Peel! What is Peel to me? D Peel!" On an amendment which he proposedto omit the clause disfranchising the freemenhe defeated the Government by a majority of 93; the numbers being 130 to 37. He followed up this victory by a motion to secure to the freemen their Parliamentary franchise, which was carried without a division. The Commons thought it better to adopt some of these alterations, however repugnant to their feelings, rather than lose the measure. The Bill, as amended, was accordingly passed on the 7th of September. London, with its numerous and wealthy incorporated guilds, was reserved for future legislation, which the lavish hospitalities of the Mansion House and Guildhall[390] postponed to a later date than municipal reformers then thought of.

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