Method and apparatus for fractional crystallization separation

Details Method and apparatus for fractional crystallization separation Method and apparatus for fractional crystallization separation

1978-05-24

1980-10-14

Niebling, John F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2604128, 260419, 62532, 62537, 62541, 210175, 210177, 210181, 210184, 210187, C09F 510, C11B 300, B01D 3518

Patent

active

042280893

ABSTRACT:
A method for separating components of a substance, for example, a fatty acid ester such as palm oil, by dissolving the substance in a solvent. The resultant solution is circulated and cooled in a circuit with crystals being formed in the solution as the temperature is lowered. The crystals are continuously separated from the circulating solution during the crystal separation phase of the process. The crystals are then preferably washed and recovered. Preferably there is a second crystallization phase in the process. The invention includes the apparatus used to carry out the process and, particularly, novel fractionating columns and filter surfaces within said columns used in the preferred embodiments of the process.

REFERENCES:
patent: 2576841 (1951-11-01), Leaders et al.
patent: 3621664 (1971-11-01), Saxer

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