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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:She raised her eyes to his, quite in the secret garden manner, and she smiled not as she had smiled when she left him this morning.
  • 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:"There's where you don't understand the science of storms," said the captain smiling. "In the northern hemisphere typhoons, cyclones, and[Pg 316] hurricanesthey are all the samewhirl from left to right, that is, they turn like the hands of a watch, while in the southern hemisphere their motion is exactly the reverse. When we think we are in the sweep of a typhoon in these waters, we run with the wind on our starboard, or right hand, and that course will take us away from the centre. In the southern hemisphere we run with the wind on the port, or left hand, with the same result. But we'll go to dinner now and be happy, for the danger is over.""Do you think she'd come? She'd have gone to Ship Island if I had caught her."

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

THREE:He laid the Clockwork man's hat and wig on the table. Gregg instantly picked them up and began examining them with great curiosity.
  • 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:To tell all that was done and seen by our young friends during their stay in Kioto would be to tell a great deal. They had their time fully occupied from their arrival to their departure, and they regretted much the necessity of leaving when they did. At the Doctor's suggestion, they attempted a new system of relating their adventures to their friends at home, and were so well pleased at the result that they determined to try it again. The new scheme was the preparation of a letter in which both had equal shares, Frank undertaking to write one half of it and Fred the other. They succeeded so well that when they read over their production to Doctor Bronson before sending it away, he was unable to say which was Fred's portion and which was Frank's. We will reproduce the letter and leave our readers to judge how well they performed their self-imposed duty. At the Doctor's suggestion, each of the boys wrote as though speaking for himself, and consequently the letter had a good deal of "I" in it.Mr Silverdale got up off the hearthrug where he had been sitting nursing his knees with miraculous celerity. She behind her hidden eyes heard{208} him and knew, she felt she knew, that in another moment would come the touch of his hands on hers as he took them, and bade her look at him. Perhaps he would say, Look at me, my darling; perhaps his delicious joking ways would even at this sublimest of moments still assert themselves and he would say Peep-o! But whatever he did would be delicious, would be perfect. But no touch came on her hands, and there was a long, an awful moment of dead silence, while behind poor Alices hands the dazzle died out of her vision. Before it was broken, she perceived that beyond a shadow of doubt he did not mean her, and both were tongue-tied, he in the shame of having provoked a passion he had no use for, she in the shame of having revealed the passion he had not invited. She had come to the wrong house: she was an unbidden guest who must be directed outside the front-door again.

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