Multi-stage purification unit process

Details Multi-stage purification unit process Multi-stage purification unit process

1987-08-25

1988-11-29

Hart, Charles

Liquid purification or separation

Processes

Separating

210260, 210409, 210413, 210415, 23301, 62541, B01D 904

Patent

active

047879858

ABSTRACT:
A counter-current process for purifying chemicals using cyrstal purification. The unit process has a purification and recovery section which contain substantially identical stages. In operation, the unit process purifies the chemical by utilizing sequential recrystallizer. The size and purity of the crystals increases from the last recrystallizer in the recovery section through each subsequent stage to the last recrystallizer in the purification section.

REFERENCES:
patent: 4004886 (1977-01-01), Thijssen et al.
patent: 4459144 (1984-07-01), Van Pelt et al.
patent: 4508553 (1985-04-01), Thijssen et al.

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