Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1984-03-22
1985-05-28
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210686, 210189, 210279, 521 26, B01J 4900
Patent
active
045199167
ABSTRACT:
The invention relates to a process for internal regeneration of mixed bed filters in which, after the exhausted ion exchanger mass has been separated into the two components and these have been regenerated and washed out, the exchanger layer in the region of the cation exchanger/anion exchanger interface is selectively removed from the mixed bed filter, the cation exchanger remaining in the filter is mixed with the anion exchanger remaining in the filter for the new loading stage, the ion exchanger mass removed from the filter is added again, when the work cycle has ended, to the exhausted ion exchanger mass before or during the separation into cation exchanger and anion exchanger, and, after the separation, the loading stage is started again with the regeneration of the cation exchanger and anion exchanger; and also to a mixed bed filter for carrying out the process.
REFERENCES:
patent: 3130151 (1964-04-01), Levendusky
patent: 3915861 (1975-10-01), Marquardt
patent: 4191644 (1980-03-01), Lembo et al.
patent: 4298696 (1981-11-01), Emmett
Bayer Aktiengesellschaft
Cintins Ivars
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