Method and installation for the crystallization of mannitol

Details Method and installation for the crystallization of mannitol Method and installation for the crystallization of mannitol

1986-05-14

1987-06-02

Evans, J. E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

422245, C07C 2978, C07C 3126

Patent

active

046706119

ABSTRACT:
A syrup of mannitol and of sorbitol is introduced through a pipe (2) into a first crystallization zone (1a) which it is led to pass through with stirring (3) and within which the temperature is maintained substantially constant by a system (4), the mixture of syrup and of crystals of mannitol being led through a pipe (8) to a second crystallization zone (1b) which it is led to pass through and within which it is subjected to a temperature gradient decreasing globally possibly modulated by a system of temperature regulation (12), the mixture emerging from this second zone being in the form of a crystalline mass rich in mannitol crystals from which the latter are recovered. A system of recycling (13) leads, in the vicinity of the upper end of the container (1a), a part of the contents of the container (1b) taken up to a level (15).

REFERENCES:
patent: 2315699 (1943-04-01), Goepp
patent: 2594863 (1952-04-01), Buck et al.
patent: 3330874 (1967-07-01), Shannon
patent: 3632656 (1972-01-01), Unver

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