Solid hollow fiber cooling crystallization systems and methods

a technology of solid hollow fibers and crystallization systems, applied in the direction of crystal growth process, crystal growth plant arrangement, polycrystalline material growth, etc., can solve the problems of poor mixing, general disadvantage of msmpr crystallizers, fouling of heat transfer areas, etc., to facilitate effective decoupling of crystal nucleation and crystal growth phenomena, and enhance the flexibility and applicability of disclosed devices/systems , the effect of high cooling ra
US20060096525A1Inactive Publication Date: 2006-05-11NEW JERSEY INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
US Β· United States
Patent Type
Applications(United States)
Current Assignee / Owner
NEW JERSEY INSTITUTE OF TECHNOLOGY
Publication Date
2006-05-11
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A solid hollow fiber cooling crystallizer and method for crystallizing aqueous and organic solutions are provided. The solid hollow fiber crystallizer (SHFC) for carrying out cooling crystallization of inorganic / organic microsolutes / macrosolutes from solution generally includes a bundle of non-porous hollow fibers mounted within a shell where a feed solution for crystallization flows through the lumen side of the hollow fibers and a cooling solution flows through the shell side to form nuclei and subsequently crystals in the feed solution at a temperature below its saturation temperature. The solid hollow fiber crystallizer may be combined with a mixing device, such as a completely stirred tank or static mixer, to further effectuate crystallization. The solid hollow fiber crystallizer may be operated in a number of modes including feed recycle mode, once through mode, SHFC-in-line static mixer in series mode, and SHFC-CST in series mode. The advantages of solid hollow fiber cooling crystallization in comparison to conventional crystallization processes include improved temperature control between crystallizing solution and coolant, higher nucleation rates, improved control of crystal size and crystal size distribution, smaller crystal size, capability for decoupling crystal nucleation and crystal growth, decreased fouling of process equipment, and improved process scale-up.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims priority to a co-pending, commonly assigned provisional application entitled β€œSolid Hollow Fiber Cooling Crystallizer and Method for Crystallizing Aqueous and Organic Solutions,” which was filed on Nov. 8, 2004 and assigned Ser. No. 60 / 625,915. The entire content of the foregoing provisional patent application is incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the field of cooling crystallizers. It more particularly relates to cooling crystallizers yielding higher heat transfer area / volume ratio, less fouling, improved temperature control, higher nucleation rates, smaller crystals and / or narrower crystal size distributions. More particularly, the present disclosure relates to non-porous, hollow fiber devices for carrying out cooling crystallization of inorganic / organic microsolutes / macrosolutes from aqueous or organic solutions that include a solid hollow fiber cr...

Claims

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