Continuous desalination process

Details Continuous desalination process Continuous desalination process

1983-06-13

1984-05-08

Cintins, Ivars C.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210677, B01D 1504

Patent

active

044473290

ABSTRACT:
A process for the desalination of water in a continuous cyclical adsorptive operation utilizing a thermally regenerable ion retarding resin. The process employs a simulated moving bed scheme having only an adsorption zone, operated at a relatively low temperature, and desorption zone, operated at a relatively high temperature. Effluent is removed from the adsorption zone in two stages for each step of a cycle, a first stage wherein sufficient water is recovered for use as desorbent in the next step, and a second stage wherein the water product stream is withdrawn. Effluent is removed from the desorption zone also in two stages, a first stage wherein a relatively small portion having the composition of the feedstream is withdrawn, and a second stage where the extract stream having a high salt content is withdrawn.

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