Water removal by hydrate formation

Food or edible material: processes – compositions – and products – Processes – Separating volatile essence and combining the separated...

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62534, 426524, 210 22R, A23L 238

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active

042073510

ABSTRACT:
A process for removing water from an aqueous solution. A hydrate forming fluid is contacted with an aqueous solution at a temperature below the maximum temperature at which said hydrate forming fluid forms a solid hydrate in the presence of said solution and at a temperature at which there is precipitation of solid solute and/or of the concentrated solution remaining after hydrate formation so as to form a magma comprising solid hydrate, any unreacted hydrate forming fluid and any unreacted aqueous solution. The hydrate forming fluid and at least part of the water constituent of the solid hydrate are separated from the solute by fractional sublimation, evaporating and/or elution to produce a substantially hydrate forming fluid-free product comprising said solute and any remaining water.

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Chemical Engineer Handbook (Perry's), McGraw-Hill, New York, 4th Edition, 17-26-28.
1964 Saline Water Conservation Report, U.S. Dept. of Interior, Office of Saline Water, pp. 188-194.
First International Symposium on Water Desalination, Oct. 3-9, 1965, The Koppers Hydrate Process, Peter van der Heem, U.S.A. pp. 1-11.
Chemical Engineer Handbook (Perry's), McGraw Hill, New York, 4th Edition 17-24.
The Condensed Chemical Dictionary, Eighth Edition, Van Nostrand Reinhold, New York, 1971, p. 887.

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