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TWO:Chapter 3

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:"What ails you, Stephen," asked Margaret, alarmed at the strange paleness of the yeoman's countenance, and the agitation of his manner as he entered the cottage on the afternoon the child died. But Holgrave, without replying to her interrogatory, hastily closed and bolted the door. He then drew the large oak table from the side of the wall, and placed it as a barricade before it. "Stephen, what means this bolting and barring?" inquired Edith, as she saw with surprise his defensive preparations. "What fear you, my son?"She laughed one of her coarse screaming laughs, with the additional drawback of mirthlessness; then she went out of the room, leaving Caro sobbing into suety palms.
  • 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:"But, Master Calverley, what is that to me?" said Byles, looking with some surprise at the squire"you know I am a friendless man, and have not wherewithal to pay the fine the steward would demand for the land. No, no, John Byles is going fast down the hill.""Look up, pretty one," said De Boteler to Margaret!"Now, by my faith Holgrave, I commend your choice. I wonder not that such a prize was contended for. Margaret,I believe that is your name? Look up! and tell me in what secret place you grew into such beauty?"

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

THREE:But in this instance the offence was aggravated, at least in the eye of the law, by the manner and occasion. The law had not as yet contemplated the evasion of its decisions, by the disinterment of the bodies of criminals, and, consequently, there was no provision for punishing the deed. It was, however, taken into account in the verdict, and the damages were proportionably heavy. Holgrave, as may readily be imagined, had not a coin to meet the demand, and his crops, which had grown and flourished, as if by miraclefor they had been little indebted to his attentionwere now condemned to be cut down, and put up for sale to pay the damages. The yeoman had often looked upon his plentiful fields with a feeling of pleasure: not that his mind had latterly been in a mood to find pleasure in the prospect of gain; but his house and his land were mortgaged, (for his mother,) and even in the darkest and most troubled scene, there is a beauty, a redeeming brightness, encircling the domestic hearth,nay, perhaps, the heart clings more closely to home, and treasures, more fondly, the little nameless pleasures, and even the cares and anxieties of domestic life, in proportion to the bleakness of the prospect without.
  • 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:"Aye, Master," said another, "he is laid up but I fear he has forgot the shrieving. However, he will never again say guilty or not guilty in a jury-box, or kiss the book in justification of bail!"

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