Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1996-08-29
1998-08-25
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210687, 210 961, 210191, C02F 142
Patent
active
057980454
ABSTRACT:
The object of the invention is a process for treating, in particular softening water by ion exchange in a regenerable medium, with exhaustion of the medium being measure in a bypass provided parallel to the main flow of the medium to the water sampling point and a suitable system in which the bypass line includes a measuring cell. It is therefore the aim of the invention to secure a flow through the measuring cell irrespective of that of the medium. In order to achieve this aim, control of the main flow and a suitable increase of the pressure gradient in the bypass, irrespective of the flow, is effected by means of a control unit (40), increasing the pressure reduction in the measuring cell irrespective of the flow. The throttling of the main flow results in a relative reduction of the bypass resistance and therefore all increased flow to the measuring cell.
REFERENCES:
patent: 3616920 (1971-11-01), Cambot
patent: 4332678 (1982-06-01), Spiegl
patent: 4385992 (1983-05-01), Clauer et al.
patent: 5069779 (1991-12-01), Brown et al.
Cintins Ivars
Karl Spiegl GmbH & Co.
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