Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1992-10-05
1993-12-14
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
210677, 521 26, C02F 142
Patent
active
052699366
ABSTRACT:
The present invention provides a process for treating ion exchange resin which includes the steps of firstly introducing a liquor for treating the resin in substantially vertical upflow into a treatment zone in order to produce a fluidised bed comprising the resin and insoluble particulate matter interspersed with each other, and secondly separating the resin from the particulate matter through entrainment of the latter by the liquor being withdrawn from the fluidised bed in a substantially horizontal flow direction. An apparatus for performing the process outlined above is also disclosed.
REFERENCES:
patent: 2855364 (1958-10-01), Roberts
patent: 3021276 (1962-02-01), Mast
patent: 3391078 (1968-07-01), Odland
patent: 3655587 (1972-04-01), Bouchard et al.
patent: 4230807 (1980-10-01), Evans
S. Evans and R. M. Gomes, "Desalination of Rhine River Water by Ion Exchange", Desalination, vol. 19, pp. 433-438 (1976).
Y. Egozy, et al., "Waste Water Recycling by Ion Exchange: II. Partial Desalination", Desalination, vol. 33, pp. 333-346 (1980).
V. E. Kosmodamianskii et al., "Investigation of Ion Exchange Technology with Regeneration of Weakly Basic Anion Exchange Resin by a Suspension of Lime", Thermal Engineering, vol. 28(3), pp. 185-188 (1981).
H. M. Bunnik, "Lime Regeneration of Weak Base Anion Exchangers", published in an unspecified forum on an unknown date prior to Oct. 12, 1990.
DUCOL Process Technical Paper, pp. 168-179, published in an unspecified forum on an unknown date prior to Oct. 12, 1990.
ESMIL International Technical Paper, "A New Development in Ion Exchange Technology, ESMIL Counterflow Ion Exchange System", published by ESMIL International BV on an unknown date prior to Oct. 12, 1990.
ESMIL Research Laboratory Technical Paper, "New Developments in Ion Exchange Technology EVMIL Systems", published by ESMIL Research Laboratory, Jul., 1977 by S. Evans.
Du Plessis John A.
Everett Denys J.
Gussmann Heinz W.
Cintins Ivars
Johannesburg Consolidated Investment Co.
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