Control of crystal growth in water purification by directional f

Details Control of crystal growth in water purification by directional f Control of crystal growth in water purification by directional f

1994-07-28

1996-09-17

Capossela, Ronald C.

Refrigeration

Processes

Fractionally solidifying a constituent and separating the same

62123, B01D 904

Patent

active

055557473

ABSTRACT:
A Directional Freeze Crystallization system employs an indirect contact heat exchanger to freeze a fraction of liquid to be purified. The unfrozen fraction is drained away and the purified frozen fraction is melted. The heat exchanger must be designed in accordance with a Growth Habit Index to achieve efficient separation of contaminants. If gases are dissolved in the liquid, the system must be pressurized.

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patent: 5032157 (1991-07-01), Ruff
Heist, Freeze Crystallization, 7 May 1979 Esp. pp. 348-350.
Moyers & Roosseau, Crystallization Operations, in Handbook of Separation Proless Tech., 1987, p. 606.
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Burton et al., The Distribution of Solute in Crystals Grown From the Melt, Part I Theoretical, 1953, pp. 1987-1989.
Glen, The Physics of Ice, 1974, Chapter Ten pp. 52-55.
Jellinek, The Ice Interface, in Water and Aqueous Solutions, 1972 pp. 95-96.
Taylor, Ice-Water Partition Coefficient for RDX and TNT, 1989, pp. 5-7.
Gill, Heat Transfer in Crystal Growth Dynamics, 1988, pp. 15-16.

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