Countercurrent liquid-solid contacting apparatus

Details Countercurrent liquid-solid contacting apparatus Countercurrent liquid-solid contacting apparatus

1979-11-29

1982-07-20

Bashore, S. Leon

Liquid purification or separation

Processes

Ion exchange or selective sorption

210189, 210268, B01D 1508

Patent

active

043404855

ABSTRACT:
A countercurrent liquid-solid contacting apparatus comprises a liquid purifying column for substantially purifying a liquid by passing the liquid upwardly through a bed of purifying material and a regenerating column for regenerating the purifying material used to purify the liquid. The liquid purifying column includes supply and transfer ports defined respectively at the top and bottom thereof and has therein the bed of purifying material which is spaced a predetermined distance from the top of the liquid treating column to provide a vacant space. The purifying column further includes a liquid inlet and outlet with a portion of the purifying bed above the liquid outlet serving as a settling layer to avoid any possible fluidization and/or expansion of the purifying material. The regenerating column is similar in construction to the construction of the purifying column, however, compressed air and washing liquid are successively or simultaneously supplied into the regenerating colunn to fluidize the soiled purifying material to separate suspended solids from the soiled purifying particles. The regenerated purifying material is continuously or intermittently supplied into the purifying column. A method therefor is also disclosed.

REFERENCES:
patent: 3767048 (1973-10-01), Prengemann
patent: 3998739 (1976-12-01), Morimoto et al.

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