Method of mixed-bed filtration and demineralization with ion-exc

Details Method of mixed-bed filtration and demineralization with ion-exc Method of mixed-bed filtration and demineralization with ion-exc

1993-02-23

1995-02-07

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210678, 210686, 210688, 521 26, C02F 142

Patent

active

053873483

ABSTRACT:
A method of mixed-bed filtration and demineralization for removing suspended impurities from the primary cooling water in a power plant by means of a demineralizer having a mixed bed formed of a particulate cation and anion exchange resin that have such a surface layer structure that granules are seen to bind with one another under microscopic examination, being able to be operated in a safe and yet economical manner by virtue of established conditions for operating processes, such as regeneration of the demineralizer by backwashing and by passage of chemicals and also, replacement of the demineralizer.

REFERENCES:
patent: 2773830 (1956-12-01), Farmer et al.
patent: 3719591 (1973-03-01), Crits
patent: 4395335 (1983-07-01), Saito
patent: 4663051 (1987-05-01), Flynn et al.
patent: 4975201 (1990-12-01), Ma
Japan Atomic Energy Soc., (the fall meeting of 1987), K40 & K41, with partial English language translations thereof.
Japan Atomic Energy Soc., (the fall meeting of 1988), J27 & J28, with partial English language translations thereof.
Hirahara et al., 1988, JAIF, International Conference on Water Chemistry in Nuclear Power Plants, Proceedings, vol. 2, pp. 694-698.
The Fourth Japan Ion Exchange Meeting, Sep. 1988, with partial English language translation thereof.
Japan Atomic Energy Soc., (the meeting of 1989), J14 & J15, with partial English language translations thereof.
The Fourth Japan Ion Exchange Meeting, Collection of Lecture Abstract 9, with partial English language translation thereof.
Ebara Engineering Review, No. 145, Oct. 1989, pp. 49-53, with partial English translation thereof.
50th International Water Conference, Oct. 1989, pp. 552-565.

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